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The Town and Country Planning (General Permitted Development) (England) Order 2015

Type Statutory-Instrument

Publication 2015-03-18

Last updated 2026-04-09

State In force

Department King's Printer of Acts of Parliament

Source legislation.gov.uk

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The improvement, maintenance or repair of an inland waterway (other than a commercial waterway or cruising waterway) to which section 104 of the Transport Act 1968 (classification of waterways)applies, and the repair or maintenance of a culvert, weir, lock, aqueduct, sluice, reservoir, let-off valve or other work used in connection with the control and operation of such a waterway.

Class D – dredging by transport undertakings

Permitted development

D

The use of any land by statutory undertakers in respect of dock, pier, harbour, water transport, canal or inland navigation undertakings for the spreading of any dredged material.

Class E – development for the aid of shipping

Permitted development

E

Development required for the purposes of the functions of a general or local lighthouse authority under the Merchant Shipping Act 1995 and any other statutory provision made with respect to a local lighthouse authority, or in the exercise by a local lighthouse authority of rights, powers or duties acquired by usage prior to the 1995 Act.

Development not permitted

E

Development is not permitted by Class E if it consists of or includes the erection of offices, or the reconstruction or alteration of offices where their design or external appearance would be materially affected.

Class F – development at an airport

Permitted development

F

The carrying out on operational land by a relevant airport operator or its agent of development (including the erection or alteration of an operational building) in connection with the provision of services and facilities at a relevant airport.

Development not permitted

F

Development is not permitted by Class F if it would consist of or include—

(a) the construction or extension of a runway;

(b) the construction of a passenger terminal the floor space of which would exceed 500 square metres;

(c) the extension or alteration of a passenger terminal, where the floor space of the building as existing at 5th December 1988 or, if built after that date, of the building as built, would be exceeded by more than 15%;

(d) the erection of a building other than an operational building; or

(e) the alteration or reconstruction of a building other than an operational building, where its design or external appearance would be materially affected.

Condition

F

Development is permitted by Class F subject to the condition that the relevant airport operator consults the local planning authority before carrying out any development, unless that development falls within the description in paragraph F.4.

Interpretation of Class F

F

For the purposes of paragraph F.1, floor space is calculated by external measurement and without taking account of the floor space in any pier or satellite.

F.4

Development falls within this paragraph if—

(a) it is urgently required for the efficient running of the airport, and

(b) it consists of the carrying out of works, or the erection or construction of a structure or of an ancillary building, or the placing on land of equipment, and the works, structure, building, or equipment do not exceed 4 metres in height or 200 cubic metres in capacity.

Class G – air traffic services development at an airport

Permitted development

G

The carrying out on operational land within the perimeter of a relevant airport by a relevant airport operator or its agent of development in connection with the provision of air traffic services.

Class H – air traffic services development near an airport

Permitted development

H

The carrying out on operational land outside but within 8 kilometres of the perimeter of a relevant airport by a relevant airport operator or its agent of development in connection with the provision of air traffic services.

Development not permitted

H

Development is not permitted by Class H if—

(a) any building erected would be used for a purpose other than housing equipment used in connection with the provision of air traffic services;

(b) any building erected would exceed a height of 4 metres; or

(c) it would consist of the installation or erection of any radar or radio mast, antenna or other apparatus which would exceed 15 metres in height, or, where an existing mast, antenna or apparatus is replaced, the height of that mast, antenna or apparatus, if greater.

Class I – development by an air traffic services licence holder within an airport

Permitted development

I

The carrying out by an air traffic services licence holder or its agents within the perimeter of an airport of development in connection with the provision of air traffic services.

Class J – development by an air traffic services licence holder on operational land

Permitted development

J

The carrying out on operational land of an air traffic services licence holder by that licence holder or its agents of development in connection with the provision of air traffic services.

Development not permitted

J

Development is not permitted by Class J if—

(a) any building erected would be used for a purpose other than housing equipment used in connection with the provision of air traffic services;

(b) any building erected would exceed a height of 4 metres; or

(c) it would consist of the installation or erection of any radar or radio mast, antenna or other apparatus which would exceed 15 metres in height, or, where an existing mast, antenna or apparatus is replaced, the height of that mast, antenna or apparatus, if greater.

Class K – development by an air traffic services licence holder in an emergency

Permitted development

K

The use of land by or on behalf of an air traffic services licence holder in an emergency to station moveable apparatus replacing unserviceable apparatus.

Condition

K

Development is permitted by Class K subject to the condition that on or before the expiry of a period of 6 months beginning with the date on which the use began, the use ceases, and any apparatus is removed, and the land is restored to its condition before the development took place, or to any other condition as may be agreed in writing between the local planning authority and the developer.

Class L – development by an air traffic services licence holder involving moveable structures

Permitted development

L

The use of land by or on behalf of an air traffic services licence holder to provide services and facilities in connection with the provision of air traffic services and the erection or placing of moveable structures on the land for the purposes of that use.

Condition

L

Development is permitted by Class L subject to the condition that, on or before the expiry of the period of 6 months beginning with the date on which the use began, the use ceases, and any structure is removed, and the land is restored to its condition before the development took place, or to any other condition as may be agreed in writing between the local planning authority and the developer.

Class M – development by the Civil Aviation Authority for surveys etc.

Permitted development

M

The use of land by or on behalf of the Civil Aviation Authority for the stationing and operation of apparatus in connection with the carrying out of surveys or investigations.

Condition

M

Development is permitted by Class M subject to the condition that on or before the expiry of the period of 6 months beginning with the date on which the use began, the use ceases, and any apparatus is removed, and the land is restored to its condition before the development took place, or to any other condition as may be agreed in writing between the local planning authority and the developer.

Class N – use of airport buildings managed by relevant airport operators

Permitted development

N

The use of buildings within the perimeter of an airport managed by a relevant airport operator for purposes connected with air transport services or other flying activities at that airport.

Interpretation of Part 8

O

For the purposes of Part 8—

“air traffic services” has the same meaning as in section 98 of the Transport Act 2000 (air traffic services) ;

“air traffic services licence holder” means a person who holds a licence under Chapter 1 of Part 1 of the Transport Act 2000 ;

“air transport services” has the same meaning as in section 82 of the Airports Act 1986 ;

“operational building” means , for the purposes of Class F, a building, other than a hotel, required in connection with the movement or maintenance of aircraft, or with the embarking, disembarking, loading, discharge or transport of passengers, livestock or goods at a relevant airport;

“relevant airport” means an airport to which Part 5 of the Airports Act 1986 (status of certain airport operators as statutory undertakers etc.) applies;

“relevant airport operator” means a relevant airport operator within the meaning of section 57A of the Airports Act 1986 (scope of Part 5); and

“transport legislation” means section 14(1)(d) of the Transport Act 1962 (supplemental provisions relating to the Boards' powers) or section 10(1)(x) of the Transport Act 1968 (general powers of Passenger Transport Executive) .

PART 9 — Development relating to roads

Class A – development by highways authorities

Permitted development

A

The carrying out by a highway authority—

(a) on land within the boundaries of a road, of any works required for the maintenance or improvement of the road, where such works involve development by virtue of section 55(2)(b) of the Act; or

(b) on land outside but adjoining the boundary of an existing highway of works required for or incidental to the maintenance or improvement of the highway.

Class B – development by the Secretary of State or a strategic highways company under the Highways Act 1980

Permitted development

B

The carrying out by the Secretary of State or a strategic highways company of works in exercise of the functions of the Secretary of State or the company under the Highways Act 1980 , or works in connection with, or incidental to, the exercise of those functions.

Interpretation of Class B

B

For the purposes of Class B, “strategic highways company” means a company for the time being appointed under Part 1 of the Infrastructure Act 2015 .

Class C – tramway or road transport undertakings

Permitted development

C

Development by transport undertakers required for the purposes of the carrying on of any tramway or road transport undertaking consisting of—

(a) the installation of posts, overhead wires, underground cables, feeder pillars or transformer boxes in, on, over or adjacent to a highway for the purpose of supplying current to public service vehicles;

(b) the installation of tramway tracks, and conduits, drains and pipes in connection with such tracks for the working of tramways;

(c) the installation of telephone cables and apparatus, huts, stop posts and signs required in connection with the operation of public service vehicles;

(d) the erection or construction and the maintenance, improvement or other alteration of passenger shelters and barriers for the control of people waiting to enter public service vehicles;

(e) any other development on operational land of the undertaking.

Development not permitted

C

Development is not permitted by Class C if it would consist of—

(a) in the case of any Class C(a) development, the installation of a structure exceeding 17 cubic metres in capacity;

(b) in the case of any Class C(e) development—

(i) the erection of a building or the reconstruction or alteration of a building where its design or external appearance would be materially affected;

(ii) the installation or erection by way of addition or replacement of any plant or machinery which would exceed 15 metres in height or the height of any plant or machinery it replaces, whichever is the greater; or

(iii) development, not wholly within a bus or tramway station, in pursuance of powers contained in transport legislation.

Interpretation of Class C

C

For the purposes of Class C, “transport legislation” means section 14(1)(d) of the Transport Act 1962 (supplemental provisions relating to the Boards' powers) or section 10(1)(x) of the Transport Act 1968 (general powers of Passenger Transport Executive) .

Class D – toll road facilities

Permitted development

D

Development consisting of—

(a) the setting up and the maintenance, improvement or other alteration of facilities for the collection of tolls;

(b) the provision of a hard surface to be used for the parking of vehicles in connection with the use of such facilities.

Development not permitted

D

Development is not permitted by Class D if—

(a) it is not located within 100 metres (measured along the ground) of the boundary of a toll road;

(b) the height of any building or structure would exceed—

(i) 7.5 metres excluding any rooftop structure; or

(ii) 10 metres including any rooftop structure; or

(c) the aggregate area of the floor space at or above ground level of any building or group of buildings within a toll collection area, excluding the floor space of any toll collection booth, would exceed 1,500 square metres.

Conditions

D

In the case of any article 2(3) land, development is permitted by Class D subject to the following conditions—

(a) the developer must, before beginning the development, apply to the local planning authority for a determination as to whether the prior approval of the authority will be required as to the siting, design and external appearance of the facilities for the collection of tolls;

(b) the application must be accompanied by a written description, together with plans and elevations, of the proposed development and any fee required to be paid;

(i) the receipt by the applicant from the local planning authority of a written notice of their determination that such prior approval is not required;

(ii) where the local planning authority give the applicant notice within 28 days following the date of receiving the application of their determination that such prior approval is required, the giving of such approval; or

(iii) the expiry of 28 days following the date on which the application was received by the local planning authority without the local planning authority making any determination as to whether such approval is required or notifying the applicant of their determination;

(d) the development must, except to the extent that the local planning authority otherwise agree in writing, be carried out—

(i) where prior approval is required, in accordance with the details approved;

(ii) where prior approval is not required, or where paragraph (c)(iii) applies, in accordance with the details submitted with the application; and

(e) the development must be carried out—

(i) where approval has been given by the local planning authority, within a period of 5 years from the date on which the approval was given;

(ii) in any other case, within a period of 5 years from the date on which the local planning authority were given the information referred to in paragraph (b).

Interpretation of Class D

D

For the purposes of Class D—

“facilities for the collection of tolls” means such buildings, structures, or other facilities as are reasonably required for the purpose of or in connection with the collection of tolls in pursuance of a toll order;

“ground level” means the level of the surface of the ground immediately adjacent to the building or group of buildings in question or, where the level of the surface of the ground on which it is situated or is to be situated is not uniform, the level of the highest part of the surface of the ground adjacent to it;

“rooftop structure” means any apparatus or structure which is reasonably required to be located on and attached to the roof, being an apparatus or structure which is—so located for the provision of heating, ventilation, air conditioning, water, gas or electricity;lift machinery; orreasonably required for safety purposes;

“toll” means a toll which may be charged pursuant to a toll order;

“toll collection area” means an area of land where tolls are collected in pursuance of a toll order, and includes any facilities for the collection of tolls;

“toll collection booth” means any building or structure designed or adapted for the purpose of collecting tolls in pursuance of a toll order;

“toll order” has the same meaning as in Part 1 of the New Roads and Street Works Act 1991 (new roads in England and Wales) ; and

“toll road” means a road which is the subject of a toll order.

Class E – repairs to unadopted streets and private ways

Permitted development

E

The carrying out on land within the boundaries of an unadopted street or private way of works required for the maintenance or improvement of the street or way.

Interpretation of Class E

E

For the purposes of Class E, “unadopted street” means a street not being a highway maintainable at the public expense within the meaning of the Highways Act 1980 .

PART 10 — Repairs to services

Class A

Permitted development

A

The carrying out of any works for the purposes of inspecting, repairing or renewing any sewer, main, pipe, cable or other apparatus, including breaking open any land for that purpose.

PART 11 — Heritage and demolition

Class A – development by Historic England

Permitted development

A

Development by or on behalf of Historic England , consisting of—

(a) the maintenance, repair or restoration of any building or monument;

(b) the erection of screens, fences or covers designed or intended to protect or safeguard any building or monument; or

Development not permitted

A

Development is not permitted by Class A(a) if the works involve the extension of the building or monument.

Condition

A

Except for development also falling within Class A(a), Class A(b) development is permitted subject to the condition that any structure erected in accordance with that permission is removed at the expiry of a period of 6 months (or such longer period as the local planning authority may agree in writing) from the date on which work to erect the structure was begun.

Interpretation of Class A

A

For the purposes of Class A, “building or monument” means any building or monument in the guardianship of Historic England or owned, controlled or managed by it.

Class B – demolition of buildings

Permitted development

B

Any building operation consisting of the demolition of a building.

Development not permitted

B

Development is not permitted by Class B if—

(a) the building has been rendered unsafe or otherwise uninhabitable by the action or inaction of any person having an interest in the land on which the building stands and it is practicable to secure safety or health by works of repair or works for affording temporary support;

(b) the demolition is “relevant demolition” for the purposes of section 196D of the Act (demolition of an unlisted etc building in a conservation area) ;...

(i) article 3(6)(p) (drinking establishments etc.) of the Use Classes Order; or

(ii) article 3(6)(q) (drinking establishments with expanded food provision) of that Order;

(d) the building is used, or was last used, for the purpose of—

(i) a concert hall;

(ii) a venue for live music performance; or

(iii) a theatre ; or

(e) the demolition relates to a statue, memorial or monument (“a commemorative structure”) in place for a period of at least 10 years on the date of any proposed demolition, other than a commemorative structure—

(i) that is a listed building;

(ii) that is a scheduled monument;

(iii) within a cemetery, on consecrated land, or within the curtilage of a place of public worship;

(iv) within the grounds of a museum or art gallery; or

(v) within the curtilage of a dwellinghouse

Conditions

B

Development is permitted by Class B subject to the following conditions—

(a) where demolition is urgently necessary in the interests of safety or health and the measures immediately necessary in such interests are the demolition of the building the developer must, as soon as reasonably practicable, give the local planning authority a written justification of the demolition;

(b) where the demolition does not fall within paragraph (a) and is not excluded demolition—

(i) the developer must, before beginning the development, apply to the local planning authority for a determination as to whether the prior approval of the authority will be required as to the method of demolition and any proposed restoration of the site;

(ii) an application described in paragraph (b)(i) must be accompanied by a written description of the proposed development, a statement that a notice has been posted in accordance with paragraph (b)(iv) and any fee required to be paid;

(iii) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(iv) subject to paragraph (b)(v), the applicant must display a site notice by site display on or near the land on which the building to be demolished is sited and must leave the notice in place for not less than 21 days in the period of 28 days beginning with the date on which the application was submitted to the local planning authority;

(v) where the site notice is, without any fault or intention of the applicant, removed, obscured or defaced before the period of 21 days referred to in paragraph (b)(iv) has elapsed, the applicant is treated as having complied with the requirements of that paragraph if the applicant has taken reasonable steps for protection of the notice and, if need be, its replacement;

(vi) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(vii) ... the development must not begin before the occurrence of one of the following—

(aa) the receipt by the applicant from the local planning authority of a written notice of their determination that such prior approval is not required;

(bb) where the local planning authority give the applicant notice within 28 days following the date of receiving the application of their determination that such prior approval is required, the giving of such approval; or

(cc) the expiry of 28 days following the date on which the application was received by the local planning authority without the local planning authority making any determination as to whether such approval is required or notifying the applicant of their determination;

(viii) the development must, except to the extent that the local planning authority otherwise agree in writing, be carried out—

(aa) where prior approval is required, in accordance with the details approved;

(bb) where prior approval is not required, in accordance with the details submitted with the application;

(ix) ... the development must be carried out—

(aa) where approval has been given by the local planning authority, within a period of 5 years from the date on which approval was given;

(bb) in any other case, within a period of 5 years from the date on which the local planning authority were given the information referred to in paragraph (b)(ii); and

(x) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Interpretation of Class B

B

For the purposes of Class B—

“cemetery” has the meaning given by section 214(8) of the Local Government Act 1972;

“dwellinghouse” does not include educational accommodation;

“excluded demolition” means demolition—on land which is the subject of a planning permission, for the redevelopment of the land, granted on an application or deemed to be granted under Part 3 of the Act (control over development),permitted to be carried out by a consent under Part 1 of the Ancient Monuments and Archaeological Areas Act 1979 (scheduled monument consent) ,permitted to be carried out by a consent under Part 1 of the Planning (Listed Buildings and Conservation Areas) Act 1990 (listed building consent) ,required or permitted to be carried out by or under any other enactment, orrequired to be carried out by virtue of a relevant obligation;

“relevant obligation” means—an obligation arising under an agreement made under section 106 of the Act, as originally enacted (agreements regulating development or use of land);a planning obligation entered into under section 106 of the Act, as substituted by section 12 of the Planning and Compensation Act 1991 (planning obligations) , or under section 299A of the Act (Crown planning obligations) ;an obligation arising under, or under an agreement made under, any provision corresponding to section 106 of the Act, as originally enacted or as substituted by the Planning and Compensation Act 1991, or to section 299A of the Act;

“site notice” means a notice containing—the name of the applicant,a description, including the address, of the building or buildings which it is proposed to be demolished,a statement that the applicant has applied to the local planning authority for a determination as to whether the prior approval of the authority will be required as to the method of demolition and any proposed restoration of the site,the date on which the applicant proposes to carry out the demolition, andthe name and address of the local planning authority,and which is signed and dated by or on behalf of the applicant;

Class C – demolition of gates, fences, walls etc

Permitted development

C

Any building operation consisting of the demolition of the whole or any part of any gate, fence, wall or other means of enclosure.

Development not permitted

C

Development is not permitted by Class C if the demolition is “relevant demolition” for the purposes of section 196D of the Act (demolition of an unlisted etc building in a conservation area) .

PART 12 — Development by local authorities

Class A

Permitted development

A

The erection or construction and the maintenance, improvement or other alteration by or on behalf of a local authority or by or on behalf of an urban development corporation of—

(a) any small ancillary building, works or equipment on land belonging to or maintained by them required for the purposes of any function exercised by them on that land otherwise than as statutory undertakers;

(b) lamp standards, information kiosks, passenger shelters, public shelters and seats, telephone boxes, fire alarms, public drinking fountains, horse troughs, refuse bins or baskets, barriers for the control of people waiting to enter public service vehicles, electric vehicle charging points and any associated infrastructure, and similar structures or works required in connection with the operation of any public service administered by them.

Interpretation of Class A

A

For the purposes of Class A, “urban development corporation” has the same meaning as in Part 16 of the Local Government, Planning and Land Act 1980 (urban development) .

A

The reference in Class A to any small ancillary building, works or equipment is a reference to any ancillary building, works or equipment not exceeding 4 metres in height or 200 cubic metres in capacity.

Class B

Permitted development

B

The deposit by a local authority of waste material on any land comprised in a site which was used for that purpose on 1st July 1948 whether or not the superficial area or the height of the deposit is extended as a result.

Development not permitted

B

Development is not permitted by Class B if the waste material is or includes material resulting from the winning and working of minerals.

Interpretation of Part 12

C

For the purposes of Part 12, “local authority” includes a parish council.

PART 13 — Water and sewerage

Class A – Water or hydraulic power undertakings

Permitted development

A

Development for the purposes of their undertaking by statutory undertakers for the supply of water or hydraulic power consisting of—

(a) development not above ground level required in connection with the supply of water or for conserving, redistributing or augmenting water resources, or for the conveyance of water treatment sludge;

(b) development in, on or under any watercourse and required in connection with the improvement or maintenance of that watercourse;

(c) the provision of a building, plant, machinery or apparatus in, on, over or under land for the purpose of survey or investigation;

(d) the maintenance, improvement or repair of works for measuring the flow in any watercourse or channel;

(e) the installation in a water distribution system of a booster station, valve house, meter or switch-gear house;

(f) any works authorised by or required in connection with an order made under section 73 of the Water Resources Act 1991 (power to make ordinary and emergency drought orders);

(g) any other development in, on, over or under operational land other than the provision of a building but including the extension or alteration of a building.

Development not permitted

A

Development is not permitted by Class A if—

(a) in the case of any Class A(a) development, it would include the construction of a reservoir;

(b) in the case of any Class A(e) development involving the installation of a station or house exceeding 29 cubic metres in capacity, that installation is carried out at or above ground level or under a highway used by vehicular traffic;

(c) in the case of any Class A(g) development, it would consist of or include the extension or alteration of a building so that—

(i) its design or external appearance would be materially affected;

(ii) the height of the original building would be exceeded, or the cubic content of the original building would be exceeded by more than 25%, or

(iii) the floor space of the original building would be exceeded by more than 1,000 square metres; or

(d) in the case of any Class A(g) development, it would consist of the installation or erection of any plant or machinery exceeding 15 metres in height or the height of anything it replaces, whichever is the greater.

Condition

A

Development is permitted by Class A(c) subject to the condition that, on completion of the survey or investigation, or at the expiration of 6 months from the commencement of the development, whichever is the sooner, all such operations cease and all such buildings, plant, machinery and apparatus are removed and the land restored as soon as reasonably practicable to its former condition (or to any other condition which may be agreed with the local planning authority).

Class B – development by or on behalf of sewerage undertakers

Permitted development

B

Development by or on behalf of a sewerage undertaker consisting of—

(a) development not above ground level required in connection with the provision, improvement, maintenance or repair of a sewer, outfall pipe, sludge main or associated apparatus;

(b) the provision of a building, plant, machinery or apparatus in, on, over or under land for the purpose of survey or investigation;

(d) the installation in a sewerage system of a pumping station, valve house, control panel house or switch-gear house;

(e) any works authorised by or required in connection with an order made under section 73 of the Water Resources Act 1991 (power to make ordinary and emergency drought orders);

(f) any other development in, on, over or under their operational land, other than the provision of a building but including the extension or alteration of a building.

Development not permitted

B

Development is not permitted by Class B if—

(a) in the case of any Class B(d) development involving the installation of a station or house exceeding 29 cubic metres in capacity, that installation is carried out at or above ground level or under a highway used by vehicular traffic;

(b) in the case of Class B(f) development, it would consist of or include the extension or alteration of a building so that—

(i) its design or external appearance would be materially affected;

(ii) the height of the original building would be exceeded, or the cubic content of the original building would be exceeded, by more than 25%; or

(iii) the floor space of the original building would be exceeded by more than 1,000 square metres; or

(c) in the case of Class B(f) development, it would consist of the installation or erection of any plant or machinery exceeding 15 metres in height or the height of anything it replaces, whichever is the greater.

Condition

B

Development is permitted by Class B(b) subject to the condition that, on completion of the survey or investigation, or at the expiration of 6 months from the commencement of the development concerned, whichever is the sooner, all such operations cease and all such buildings, plant, machinery and apparatus are removed and the land restored as soon as reasonably practicable to its former condition (or to any other condition which may be agreed with the local planning authority).

Interpretation of Class B

B

For the purposes of Class B—

“associated apparatus”, in relation to any sewer, main or pipe, means pumps, machinery or apparatus associated with the relevant sewer, main or pipe; and

“sludge main” means a pipe or system of pipes (together with any pumps or other machinery or apparatus associated with it) for the conveyance of the residue of water or sewage treated in a water or sewage treatment works as the case may be, including final effluent or the products of the dewatering or incineration of such residue, or partly for any of those purposes and partly for the conveyance of trade effluent or its residue.

Class C – development by drainage bodies

Permitted development

C

Development by a drainage body in, on or under any watercourse or land drainage works required in connection with the improvement, maintenance or repair of that watercourse or those works.

Interpretation of Class C

C

For the purposes of Class C, “drainage body” has the same meaning as in section 72(1) of the Land Drainage Act 1991 (interpretation) other than the Environment Agency.

Class D – development by the Environment Agency

Permitted development

D

Development by the Environment Agency for the purposes of its functions, consisting of—

(a) development not above ground level required in connection with conserving, redistributing or augmenting water resources;

(b) development in, on or under any watercourse or land drainage works and required in connection with the improvement, maintenance or repair of that watercourse or those works;

(c) the provision of a building, plant, machinery or apparatus in, on, over or under land for the purpose of survey or investigation;

(d) the maintenance, improvement or repair of works for measuring the flow in any watercourse or channel;

(e) any works authorised by or required in connection with an order made under section 73 of the Water Resources Act 1991 (power to make ordinary and emergency drought orders);

(f) any other development in, on, over or under their operational land, other than the provision of a building but including the extension or alteration of a building.

Development not permitted

D

Development is not permitted by Class D if—

(a) in the case of any Class D(a) development, it would include the construction of a reservoir;

(b) in the case of any Class D(f) development, it would consist of or include the extension or alteration of a building so that—

(i) its design or external appearance would be materially affected,

(ii) the height of the original building would be exceeded, or the cubic content of the original building would be exceeded by more than 25%, or

(iii) the floor space of the original building would be exceeded by more than 1,000 square metres; or

(c) in the case of any Class D(f) development, it would consist of the installation or erection of any plant or machinery exceeding 15 metres in height or the height of anything it replaces, whichever is the greater.

Condition

D

Development is permitted by Class D(c) subject to the condition that, on completion of the survey or investigation, or at the expiration of 6 months from the commencement of the development concerned, whichever is the sooner, all such operations cease and all such buildings, plant, machinery and apparatus are removed and the land restored as soon as reasonably practicable to its former condition (or to any other condition which may be agreed with the local planning authority).

PART 14 — Renewable energy

Class A – installation or alteration etc of solar equipment on domestic premises

Permitted development

A

The installation, alteration or replacement of microgeneration solar PV or solar thermal equipment on—

(a) a dwellinghouse or a block of flats; or

(b) a building situated within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

A

Development is not permitted by Class A if—

(a) the solar PV or solar thermal equipment would protrude more than 0.2 metres beyond the plane of the wall or , in the case of a pitched roof, the roof slope when measured from the perpendicular with the external surface of the wall or pitched roof slope;

(b) in the case of solar PV or solar thermal equipment on a pitched roof, it would result in the highest part of the solar PV or solar thermal equipment being higher than the highest part of the roof (excluding any chimney);

(ba) in the case of solar PV or solar thermal equipment on a flat roof, it would result in the highest part of the solar PV or solar thermal equipment being more than 0.6 metres higher than the highest part of the roof (excluding any chimney);

(c) in the case of land within a conservation area or which is a World Heritage Site, the solar PV or solar thermal equipment would be installed on a wall which fronts a highway;

(d) the solar PV or solar thermal equipment would be installed on a site designated as a scheduled monument; or

(e) the solar PV or solar thermal equipment would be installed on a building within the curtilage of the dwellinghouse or block of flats if the dwellinghouse or block of flats is a listed building.

Conditions

A

Development is permitted by Class A subject to the following conditions—

(a) solar PV or solar thermal equipment is, so far as practicable, sited so as to minimise its effect on the external appearance of the building;

(b) solar PV or solar thermal equipment is, so far as practicable, sited so as to minimise its effect on the amenity of the area; ...

(ba) in the case of solar PV or solar thermal equipment installed on a flat roof located on article 2(3) land, before beginning development the developer must apply to the local planning authority for a determination as to whether the prior approval of the local planning authority will be required with respect to the impact of the appearance of the solar PV or solar thermal equipment on that land;

(bb) in relation to an application under sub-paragraph (ba), paragraphs J.4(3) to J.4(12) of this Part apply as if “Class A” substitutes the reference to “Class J” in paragraph J.4(4); and

Class B - installation or alteration etc of stand-alone solar equipment on domestic premises

Permitted development

B

The installation, alteration or replacement of stand-alone solar for microgeneration within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

B

Development is not permitted by Class B if—

(a) in the case of the installation of stand-alone solar, the development would result in the presence within the curtilage of more than 1 stand-alone solar;

(b) any part of the stand-alone solar—

(i) would exceed 4 metres in height or, in the case of stand-alone solar on land in a conservation area which would be installed so that it is nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway, 2 metres in height;

(ii) would, in the case of land ... which is a World Heritage Site, be installed so that it is nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway;

(iii) would be installed within 5 metres of the boundary of the curtilage;

(iv) would be installed within the curtilage of a listed building; or

(v) would be installed on a site designated as a scheduled monument; or

(c) the surface area of the solar panels forming part of the stand-alone solar would exceed 9 square metres or any dimension of its array (including any housing) would exceed 3 metres.

Conditions

B

Development is permitted by Class B subject to the following conditions—

(a) stand-alone solar is, so far as practicable, sited so as to minimise its effect on the amenity of the area; ...

(aa) in the case of stand-alone solar installed in a conservation area nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway, before beginning development the developer must apply to the local planning authority for a determination as to whether the prior approval of the local planning authority will be required with respect to the impact of the appearance of the stand-alone solar on the character of the conservation area;

(ab) in relation to an application under sub-paragraph (aa), paragraphs J.4(3) to J.4(12) of this Part apply as if “Class B” substitutes the reference to “Class J” in paragraph J.4(4); and

(b) stand-alone solar is removed as soon as reasonably practicable when no longer needed.

Class C – installation or alteration etc of ground source heat pumps on domestic premises

Permitted development

C

The installation, alteration or replacement of a microgeneration ground source heat pump within the curtilage of a dwellinghouse or a block of flats.

Class D – installation or alteration etc of water source heat pumps on domestic premises

Permitted development

D

The installation, alteration or replacement of a microgeneration water source heat pump within the curtilage of a dwellinghouse or a block of flats.

Class E – installation or alteration etc of flue for biomass heating system on domestic premises

Permitted development

E

The installation, alteration or replacement of a flue, forming part of a microgeneration biomass heating system, on a dwellinghouse or a block of flats.

Development not permitted

E

Development is not permitted by Class E if—

(a) the height of the flue would exceed the highest part of the roof by 1 metre or more; or

(b) in the case of land within a conservation area or which is a World Heritage Site, the flue would be installed on a wall or roof slope which fronts a highway.

Class F – installation or alteration etc of flue for combined heat and power on domestic premises

Permitted development

F

The installation, alteration or replacement of a flue, forming part of a microgeneration combined heat and power system, on a dwellinghouse or a block of flats.

Development not permitted

F

Development is not permitted by Class F if—

(a) the height of the flue would exceed the highest part of the roof by 1 metre or more; or

(b) in the case of land within a conservation area or which is a World Heritage Site, the flue would be installed on a wall or roof slope which fronts a highway.

Class G – installation or alteration etc of air source heat pumps on domestic premises

Permitted Development

G

The installation, alteration or replacement of a microgeneration air source heat pump—

(a) on a dwellinghouse or a block of flats; or

(b) within the curtilage of a dwellinghouse or a block of flats, including on a building within that curtilage.

Development not permitted

G

Development is not permitted by Class G unless the air source heat pump complies with the MCS Planning Standards ....

G

Development is not permitted by Class G if—

(a) in the case of the installation of an air source heat pump, the development would result in the presence of —

(i) more than one air source heat pump on, or within the curtilage of—

(aa) a dwellinghouse which is not a detached dwellinghouse;

(bb) a block of flats;

(ii) more than two air source heat pumps on, or within the curtilage of, a detached dwellinghouse;

(b) in the case of the installation of an air source heat pump, a wind turbine is installed on the same building or within the curtilage of the dwellinghouse or block of flats;

(c) in the case of the installation of an air source heat pump, a stand-alone wind turbine is installed within the curtilage of the dwellinghouse or block of flats;

(d) the volume of the air source heat pump's outdoor compressor unit (including any housing) would —

(i) in the case of the installation of an air source heat pump on, or within the curtilage of, a dwellinghouse, exceed 1.5 cubic metres;

(ii) in the case of the installation of an air source heat pump on, or within the curtilage of, a block of flats, exceed 0.6 cubic metres;

(e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(f) the air source heat pump would be installed on a pitched roof;

(g) the air source heat pump would be installed on a flat roof where it would be within 1 metre of the external edge of that roof;

(h) the air source heat pump would be installed on a site designated as a scheduled monument;

(i) the air source heat pump would be installed on a building or on land within the curtilage of the dwellinghouse or the block of flats if the dwellinghouse or the block of flats is a listed building;

(j) in the case of land within a conservation area or which is a World Heritage Site the air source heat pump—

(i) would be installed on a wall or a roof which fronts a highway; or

(ii) would be installed so that it is nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway; or

(k) in the case of land, other than land within a conservation area or which is a World Heritage Site, the air source heat pump would be installed on a wall of a dwellinghouse or block of flats if—

(i) that wall fronts a highway; and

(ii) the air source heat pump would be installed on any part of that wall which is above the level of the ground floor storey.

Conditions

G.3

Development is permitted by Class G subject to the following conditions—

(a) the air source heat pump is used solely for heating purposes;

(b) the air source heat pump is, so far as practicable, sited so as to minimise its effect on the external appearance of the building;

(c) the air source heat pump is, so far as practicable, sited so as to minimise its effect on the amenity of the area; and

(d) the air source heat pump is removed as soon as reasonably practicable when no longer needed.

Class H – installation or alteration etc of wind turbine on domestic premises

Permitted Development

H

The installation, alteration or replacement of a microgeneration wind turbine on—

(a) a detached dwellinghouse; or

(b) a detached building situated within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

H

Development is not permitted by Class H unless the wind turbine complies with the MCS Planning Standards or equivalent standards.

H

Development is not permitted by Class H if—

(a) in the case of the installation of a wind turbine the development would result in the presence of more than 1 wind turbine on the same building or within the curtilage;

(b) in the case of the installation of a wind turbine, a stand-alone wind turbine is installed within the curtilage of the dwellinghouse or the block of flats;

(c) in the case of the installation of a wind turbine, an air source heat pump is installed on the same building or within its curtilage;

(d) the highest part of the wind turbine (including blades) would either—

(i) protrude more than 3 metres above the highest part of the roof (excluding the chimney); or

(ii) exceed more than 15 metres in height,

whichever is the lesser;

(e) the distance between ground level and the lowest part of any blade of the wind turbine would be less than 5 metres;

(f) any part of the wind turbine (including blades) would be positioned so that it would be within 5 metres of any boundary of the curtilage of the dwellinghouse or the block of flats;

(g) the swept area of any blade of the wind turbine would exceed 3.8 square metres;

(h) the wind turbine would be installed on safeguarded land;

(i) the wind turbine would be installed on a site designated as a scheduled monument;

(j) the wind turbine would be installed within the curtilage of a building which is a listed building;

(k) in the case of land within a conservation area, the wind turbine would be installed on a wall or roof slope of—

(i) the detached dwellinghouse; or

(ii) a building within the curtilage of the dwellinghouse or block of flats,

which fronts a highway; or

(l) the wind turbine would be installed on article 2(3) land other than land within a conservation area.

Conditions

H

Development is permitted by Class H subject to the following conditions—

(a) the blades of the wind turbine is made of non-reflective materials;

(b) the wind turbine is, so far as practicable, sited so as to minimise its effect on the external appearance of the building;

(d) the wind turbine is removed as soon as reasonably practicable when no longer needed.

Class I – installation or alteration etc of stand-alone wind turbine on domestic premises

Permitted Development

I

The installation, alteration or replacement of a stand-alone wind turbine for microgeneration within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

I

Development is not permitted by Class I unless the stand-alone wind turbine complies with the MCS Planning Standards or equivalent standards.

I

Development is not permitted by Class I if—

(a) in the case of the installation of a stand-alone wind turbine, the development would result in the presence of more than 1 stand-alone wind turbine within the curtilage of the dwellinghouse or block of flats;

(b) in the case of the installation of a stand-alone wind turbine, a wind turbine is installed on the dwellinghouse or on a building within the curtilage of the dwellinghouse or the block of flats;

(c) in the case of the installation of a stand-alone wind turbine, an air source heat pump is installed on the dwellinghouse or block of flats or within the curtilage of the dwellinghouse or block of flats;

(d) the highest part of the stand-alone wind turbine would exceed 11.1 metres in height;

(e) the distance between ground level and the lowest part of any blade of the stand-alone wind turbine would be less than 5 metres;

(f) any part of the stand-alone wind turbine (including blades) would be located in a position which is less than a distance equivalent to the overall height (including blades) of the stand-alone wind turbine plus 10% of its height when measured from any point along the boundary of the curtilage;

(g) the swept area of any blade of the stand-alone wind turbine exceeds 3.8 square metres;

(h) the stand-alone wind turbine would be installed on safeguarded land;

(i) the stand-alone wind turbine would be installed on a site designated as a scheduled monument;

(j) the stand-alone wind turbine would be installed within the curtilage of a building which is a listed building;

(k) in the case of land within a conservation area, the stand-alone wind turbine would be installed so that it is nearer to any highway which bounds the curtilage than the part of the dwellinghouse or block of flats which is nearest to that highway; or

(l) the stand-alone wind turbine would be installed on article 2(3) land other than land within a conservation area.

Conditions

I.3

Development is permitted by Class I subject to the following conditions—

(a) the blades of the stand-alone wind turbine is made of non-reflective materials;

(b) the stand-alone wind turbine is, so far as practicable, sited so as to minimise its effect on the amenity of the area; and

Class J – installation or alteration etc of solar equipment on non-domestic premises

Permitted development

J

The installation, alteration or replacement of—

(a) microgeneration solar thermal equipment on a building;

(b) microgeneration solar PV equipment on a building; or

Development not permitted

J

Development is not permitted by Class J if—

(a) the solar PV equipment or solar thermal equipment would be installed on a pitched roof and would protrude more than 0.2 metres beyond the plane of the roof slope when measured from the perpendicular with the external surface of the roof slope;

(b) the solar PV equipment or solar thermal equipment would be installed on a flat roof, where the highest part of the solar PV equipment would be higher than 1 metre above the highest part of the roof (excluding any chimney);

(c) the solar PV equipment or solar thermal equipment would be installed on a roof and within 1 metre of the external edge of that roof;

(d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(e) the solar PV equipment or solar thermal equipment would be installed on a site designated as a scheduled monument; or

(f) the solar PV equipment or solar thermal equipment would be installed on a listed building or on a building within the curtilage of a listed building.

J

Development is not permitted by Class J(a) or (b) if—

(a) the solar PV equipment or solar thermal equipment would be installed on a wall and would protrude more than 0.2 metres beyond the plane of the wall when measured from the perpendicular with the external surface of the wall;

(b) the solar PV equipment or solar thermal equipment would be installed on a wall and within 1 metre of a junction of that wall with another wall or with the roof of the building; or

(c) in the case of a building on article 2(3) land, the solar PV equipment or solar thermal equipment would be installed on a wall which fronts a highway.

J.3

Development is not permitted by Class J(c) if the capacity of the solar PV equipment installed (together with any solar PV equipment installed under Class J(b)) to generate electricity exceeds 1 megawatt.

Conditions

J.4

(1) Class J development is permitted subject to the following conditions—

(a) the solar PV equipment or solar thermal equipment must, so far as practicable, be sited so as to minimise its effect on the external appearance of the building and the amenity of the area; and

(b) the solar PV equipment or solar thermal equipment is removed as soon as reasonably practicable when no longer needed.

(2) Class J(c) development is permitted subject to the condition that before beginning the development the developer must apply to the local planning authority for a determination as to whether the prior approval of the authority will be required as to the design or external appearance of the development, in particular the impact of glare on occupiers of neighbouring land, and the following sub-paragraphs apply in relation to that application.

(3) The application must be accompanied by—

(a) a written description of the proposed development;

(b) a plan indicating the site and showing the proposed development;

(d) the developer’s email address if the developer is content to receive communications electronically;

together with any fee required to be paid.

(4) The local planning authority may refuse an application where, in the opinion of the authority—

(a) the proposed development does not comply with, or

(b) the developer has provided insufficient information to enable the authority to establish whether the proposed development complies with,

any conditions, limitations or restrictions specified in Class J applicable to the development in question.

(5) Sub-paragraphs (6) and (8) do not apply where a local planning authority refuses an application under sub-paragraph (4) and for the purposes of section 78 (appeals) of the Act such a refusal is to be treated as a refusal of an application for approval.

(6) The local planning authority must give notice of the proposed development—

(a) by site display in at least one place on or near the land to which the application relates for not less than 21 days of a notice which—

(i) describes the proposed development;

(ii) provides the address of the proposed development;

(iii) specifies the date by which representations are to be received by the local planning authority; or

(b) by serving a notice in that form on any adjoining owner or occupier.

(7) The local planning authority may require the developer to submit such information as the authority may reasonably require in order to determine the application.

(8) The local planning authority must, when determining an application—

(a) take into account any representations made to them as a result of any notice given under sub-paragraph (6); and

(b) have regard to the National Planning Policy Framework issued by the Department for Communities and Local Government in March 2012¹⁰¹, so far as relevant to the subject matter of the prior approval, as if the application were a planning application.

(9) The development must not begin before the occurrence of one of the following—

(a) the receipt by the applicant from the local planning authority of a written notice of their determination that such prior approval is not required;

(b) the receipt by the applicant from the local planning authority of a written notice giving their prior approval; or

(c) the expiry of 56 days following the date on which the application under sub-paragraph (3) was received by the local planning authority without the authority notifying the applicant as to whether prior approval is given or refused.

(10) The development must be carried out—

(a) where prior approval is required, in accordance with the details approved by the local planning authority;

(b) where prior approval is not required, or where sub-paragraph (9)(c) applies, in accordance with the details provided in the application referred to in sub-paragraph (3),

unless the local planning authority and the developer agree otherwise in writing.

(11) The local planning authority may grant prior approval unconditionally or subject to conditions reasonably related to the subject matter of the prior approval.

Class K – installation or alteration etc of stand-alone solar equipment on non-domestic premises

Permitted development

K

The installation, alteration or replacement of stand-alone solar for microgeneration within the curtilage of a building other than a dwellinghouse or a block of flats.

Development not permitted

K

Development is not permitted by Class K if—

(a) in the case of the installation of stand-alone solar, the development would result in the presence within the curtilage of more than 1 stand-alone solar;

(b) any part of the stand-alone solar—

(i) would exceed 4 metres in height or, in the case of stand-alone solar installed on article 2(3) land so that it is nearer to any highway which bounds the curtilage than the part of the building which is nearest to that highway, 2 metres in height;

(ii) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(iii) would be installed within 5 metres of the boundary of the curtilage;

(iv) would be installed within the curtilage of a listed building; or

(v) would be installed on a site designated as a scheduled monument; or

(c) the surface area of the solar panels forming part of the stand-alone solar would exceed 9 square metres or any dimension of its array (including any housing) would exceed 3 metres.

Conditions

K

Development is permitted by Class K subject to the following conditions—

(a) the stand-alone solar must, so far as practicable, be sited so as to minimise its effect on the amenity of the area; ...

(aa) in the case of stand-alone solar installed on article 2(3) land nearer to any highway which bounds the curtilage than the part of the building which is nearest to that highway, before beginning development the developer must apply to the local planning authority for a determination as to whether the prior approval of the local planning authority will be required with respect to the impact of the appearance of the stand-alone solar on that land;

(ab) in relation to an application under sub-paragraph (aa), paragraphs J.4(3) to J.4(12) of this Part apply as if “Class K” substitutes the reference to “Class J” in paragraph J.4(4); and

(b) the stand-alone solar is removed as soon as reasonably practicable when no longer needed.

Class L – installation or alteration etc of ground source heat pump on non-domestic premises

Permitted development

L

The installation, alteration or replacement of a microgeneration ground source heat pump within the curtilage of a building other than a dwellinghouse or a block of flats.

Conditions

L

Development is permitted by Class L subject to the following conditions—

(a) the total area of excavation must not exceed 0.5 hectares;

(b) the development must not result in the presence within the curtilage of more than 1 ground source heat pump; and

(c) a pump is removed as soon as reasonably practicable when no longer needed and the land is, as far as reasonably practicable, restored to its condition before the development took place, or to such condition as may have been agreed in writing between the local planning authority and the developer.

Class M – installation or alteration etc of water source heat pump on non-domestic premises

Permitted development

M

The installation, alteration or replacement of a microgeneration water source heat pump within the curtilage of a building other than a dwellinghouse or a block of flats.

Conditions

M

Development is permitted by Class M subject to the condition that the total surface area covered by the water source heat pump (including any pipes) must not exceed 0.5 hectares.

Class N – installation etc of flue for biomass heating system on non-domestic premises

Permitted development

N

The installation, alteration or replacement of a flue, forming part of a microgeneration biomass heating system, on a building other than—

(a) a dwellinghouse or a block of flats; or

(b) a building situated within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

N

Development is not permitted by Class N if—

(a) the capacity of the system that the flue would serve exceeds 45 kilowatts thermal;

(b) the height of the flue would exceed either—

(i) the highest part of the roof by 1 metre or more, or

(ii) the height of an existing flue which is being replaced,

whichever is the highest;

(c) the installation of the flue would result in the installation on the same building of more than 1 flue forming part of either a biomass heating system or a combined heat and power system;

(d) the flue would be installed on a listed building, within the curtilage of a listed building or on a site designated as a scheduled monument; or

(e) in the case of a building on article 2(3) land, the flue would be installed on a wall or roof slope which fronts a highway.

Class O – installation etc of flue for combined heat and power on non-domestic premises

Permitted development

O

The installation, alteration or replacement of a flue, forming part of a microgeneration combined heat and power system, on a building other than—

(a) a dwellinghouse or a block of flats; or

(b) a building situated within the curtilage of a dwellinghouse or a block of flats.

Development not permitted

O

Development is not permitted by Class O if—

(a) the capacity of the system that the flue would serve exceeds 45 kilowatts thermal;

(b) the height of the flue would exceed either—

(i) the highest part of the roof by 1 metre or more, or

(ii) the height of an existing flue which is being replaced,

whichever is the highest;

(c) the installation of the flue would result in the installation on the same building of more than 1 flue forming part of either a biomass heating system or a combined heat and power system;

(d) the flue would be installed on a listed building, within the curtilage of a listed building, or on a site designated as a scheduled monument; or

(e) in the case of a building on article 2(3) land, the flue would be installed on a wall or roof slope which fronts a highway.

Interpretation of Part 14

P

For the purposes of Part 14—

“aerodrome”—means any area of land or water designed, equipped, set apart, or commonly used for affording facilities for the landing and departure of aircraft; andincludes any area or space, whether on the ground, on the roof of a building or elsewhere, which is designed, equipped or set apart for affording facilities for the landing and departure of aircraft capable of descending or climbing vertically; butdoes not include any area the use of which for affording facilities for the landing and departure of aircraft has been abandoned and has not been resumed;

“air traffic services licence holder” means a person who holds a licence under Chapter 1 of Part 1 of the Transport Act 2000 ;

“block of flats” means a building which consists wholly of flats;

“detached dwellinghouse” or “detached building” means a dwellinghouse or building, as the case may be, which does not share a party wall with a neighbouring building;

“MCS Planning Standards” means the standards specified in the Microgeneration Certification Scheme for air source heat pumps (being MCS 020 a) - Air Source Heat Pump Sound Calculation (For Permitted Development Installations)) and for small and micro wind turbines (being MCS 020 b) - Wind Turbine Sound Calculation (For Permitted Development Installations)) ;

“microgeneration” has the same meaning as in section 82(6) of the Energy Act 2004 ;

“safeguarded land” means land which—is necessary to be safeguarded for aviation or defence purposes; andhas been notified as such, in writing, to the Secretary of State by an aerodrome operator, an air traffic services licence holder or the Secretary of State for Defence for the purposes of this Part;

“solar canopy” means a canopy structure—installed with solar PV or solar thermal equipment, andopen on all sides or, in the case of development adjoining a building, on three sides;

“solar PV” means solar photovoltaics;

“stand-alone solar” means solar PV or solar thermal equipment which is not installed on a building;

“stand-alone wind turbine” means a wind turbine which is not fixed to a building; and

“water source heat pump” means a heat pump where the collecting medium is water.

Class A – gas transporters

Permitted development

A

Development by a gas transporter required for the purposes of its undertaking consisting of—

(a) the laying underground of mains, pipes or other apparatus;

(b) the installation in a gas distribution system of apparatus for measuring, recording, controlling or varying the pressure, flow or volume of gas, and structures for housing such apparatus;

(c) the construction in any storage area or protective area specified in an order made under section 4 of the Gas Act 1965 (storage authorisation orders), of boreholes, and the erection or construction in any such area of any plant or machinery required in connection with the construction of such boreholes;

(d) the placing and storage on land of pipes and other apparatus to be included in a main or pipe which is being or is about to be laid or constructed in pursuance of planning permission granted or deemed to be granted under Part 3 (control over development) or Part 13 (application of Act to Crown land) of the Act;

(e) the erection on operational land of the gas transporter of a building solely for the protection of plant or machinery;

(f) any other development carried out in, on, over or under the operational land of the gas transporter.

Development not permitted

A

Development is not permitted by Class A if—

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