The Building Regulations 2010

[^key-fdc49e205be622c941570dcccdd4e081]: Reg. 42 modified (E.) (6.4.2024) by The Building (Registered Building Control Approvers etc.) (England) Regulations 2024 (S.I. 2024/110), regs. 1(3), 5(2)(3) (with regs. 44-47)

[^key-fe53b3d70ecbc96ce7c62478ea55edc4]: Words in reg. 18(4) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(8)(a) (with regs. 22-24)

[^key-ff1846bb554b2575257022f50443168e]: Regs. 19A-19F inserted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 11 (with regs. 22-24)

[^key-ff18dfb12a8d8005d51363ef1f04818b]: Words in reg. 17(2) inserted (E.) (7.10.2025) by The Building Regulations etc. (Amendment) (England) Regulations 2025 (S.I. 2025/1017), regs. 1(2), 10(1)

[^M_C_02b5b02e-aace-4e41-df05-f3c234892fe1]: Reg. 44 applied (with modifications) (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(1)(6) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h)(j) (with reg. 6))

[^M_C_21718797-70a3-4319-b38a-fa8ae0fd1a36]: Reg. 27 applied (with modifications) (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(1)(2) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6))

[^M_C_26640dbc-36bb-4468-806e-5a8e80c2a4bc]: Reg. 37 applied (with modifications) (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(1)(4) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6)))

[^M_C_30958739-456b-499a-921a-e12b03f60b9a]: S. 25A applied (with modifications) by S.I. 2010/2215, reg. 20(1) (as substituted (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 39, Sch. 1 (with regs. 1(3), 45-47); and (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 32 (with reg. 1(2)(3))

[^M_C_36621b53-21d6-454e-aaed-567d538b986b]: Reg. 41 applied (with modifications) (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(1)(5) (as amended as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h)(i) (with reg. 6))

[^M_C_63cc3fa3-ac23-4d1f-f681-ad62170bee18]: Reg. 27A applied (with modifications) (W.) (31.7.2014) by S.I. 2010/2215, reg. 20(1)(2A) (as amended by The Building (Amendment) (Wales) Regulations 2014 (S.I. 2014/110), regs. 1(3), 13 (with reg. 1(2))) (as amended: (W.) (8.6.2018) by S.I. 2018/558, regs. 1(2), 21 (with reg. 29); and (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6))

[^M_C_9e4f2ccd-98ae-4852-8910-ec961f27e91f]: S. 25A applied (with modifications) by S.I. 2010/2215, reg. 20(1) (as substituted (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 39, Sch. 1 (with regs. 1(3), 45-47); and (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 32 (with reg. 1(2)(3)) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6))

[^M_C_a462dd09-cb6c-48a2-9ddc-f81b2b9e02e3]: Reg. 27A applied (with modifications) (6.4.2014) by S.I. 2010/2215, reg. 20(1)(2A) (as amended by The Building Regulations &c. (Amendment) Regulations 2014 (S.I. 2014/579), regs. 1(4), 3(3) (with reg. 1(3)))

[^M_C_a9df2dfb-0ba7-416a-ef4e-f2a8f259ef43]: Reg. 27C applied (with modifications) by S.I. 2010/2215, reg. 20(1)(2C) (as inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 20 (with reg. 21)) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6))

[^M_C_c6b5ff8c-bb30-407e-89c3-cbc034994fd9]: Reg. 20A applied (with modifications) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), reg. 20(1) (as amended: (6.4.2014) by S.I. 2014/579, regs. 1(4), 3(3)(b) (with reg. 1(3); and (8.6.2013) by S.I. 2018/558, regs. 1(2), 21(b)(i) (with reg. 29))

[^M_C_d18e44ea-6e6d-4684-be44-518d2bbb21a1]: Reg. 44ZA applied (with modifications) by S.I. 2010/2215, reg. 20(1)(6A) (as inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 20 (with reg. 21)) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h)(k) (with reg. 6))

[^M_C_db79f596-99e6-4ce7-eabb-790626312590]: Reg. 42 applied (with modifications) (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(1) (as amended (W.) (25.4.2024) by S.I. 2024/447, regs. 1(1), 3(h) (with reg. 6))

[^M_C_ea5e661b-f707-43af-db64-36ff2fa663f0]: Regulations continued (E.) (1.10.2023) by The Building Safety Act 2022 (Commencement No. 5 and Transitional Provisions) Regulations 2023 (S.I. 2023/993), reg. 9

[^M_E_03a1184c-b9a5-4c1e-e3b2-282e1e60f769]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_1ec819ca-52c8-4371-8546-f3b5aeb6d7fd]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_214bc87c-4c40-4f0f-e1c5-5030d001614c]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_25ce5511-f838-4968-e137-dea4a569b711]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_27b7ca04-76ee-4247-a8df-78068d3169c8]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_2a8e9f4c-dc27-436d-92da-6695f61f1b62]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_2ce67fe9-2720-454f-aaa6-833d5c262a3a]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_2d0f5742-52e2-48f8-e191-38f8aa4a44f1]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_3383d08d-fe93-4c8f-fae7-1382545c547d]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_3413207a-9e54-4372-aa8e-44c7c88adf84]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_347eb486-3a07-4f2f-b7e1-dd6bf2b5f83a]: This version of this provision applies Wales to only; a separate version has been created for England only

[^M_E_353971a2-c759-4289-9ab4-6ddeefc3e467]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_40496c7c-6af9-4ce4-ddc4-a9d1ae4a40db]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_46ebf620-986d-488d-d08c-3699c1cba9e2]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_480064f7-341f-4c72-eb40-35ea8978110e]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_4a1a64fe-b49e-4144-f52d-edade0139121]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_4b2d3dc6-a345-45f7-a5a1-7705c7e34ac3]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_4b64669e-40c1-41bf-9851-4f0b5f7fcb6e]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_4bd0e9d0-1241-48c2-91c0-38c176859320]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_4d88efd5-99c5-4f25-f326-15eab9b7085c]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_52051d2c-ebc8-4737-f8e2-80c692309c60]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_58d144cf-004b-41a4-b977-6a5b190b718a]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_5cf18592-7384-42af-ebec-697fd9e89ad9]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_634f2db0-db22-4956-fed3-b98ca903520a]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_64cbdee3-22a6-4aa8-acb1-9d8e81b05e5b]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_66e124bb-ab06-4021-bda6-8872a168e865]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_67e8b45b-1e5f-4c5b-bbb0-6b85cd4db1e5]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_6f0eb01a-ba35-4713-9f90-d95778ad1168]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_757c9de0-95ab-4cd7-ad28-828508849fc9]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_77c92385-a9f1-403d-e957-f63b1409bd1c]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_80338db9-c1f0-4d1a-eed2-da88894202ed]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_8a5bddb2-49e4-4577-b259-6597e11f5774]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_8f3715ac-8ab8-483b-abd0-0add7d88c45e]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_9172ba1d-46ab-46c1-f9ca-09a01d3db7b9]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_96f04713-e61b-4c8c-94d1-02d1595c4483]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_9fcffa94-faf1-4724-d7eb-6e1baf666e28]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_a1560061-bf99-4cfb-9268-856cff4b6d63]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_a3955300-c015-4612-e466-5e31a4b82d63]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_ac400792-e61c-4fc8-9bc3-c0676d915f1c]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_af441aae-fb70-4370-fd27-67a738aa05af]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_b5db69ec-53ad-4e1a-bd12-24d6bb17b41b]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_b7241261-8ac8-48d8-bea4-ea38806561f8]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_c018cb23-c077-4be5-ed1b-c4e0d7186334]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_c44adc78-2ab9-4c22-fdd3-0da0349471a0]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_c8056b5f-228f-4331-9cec-109dbb0cbe23]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_cebdb8c2-3243-4b91-ba2f-2a537523225b]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_d63dbc06-a329-4ebe-ee95-01e6d856c2ec]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_d910a52e-5a5e-442b-e02d-a6fb4b814b99]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_e2dd6e39-7721-4377-bc2c-9f3c00f73ec3]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_e3571fd6-f865-4996-ecb7-d498a6911d33]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_ecd6dd63-8b58-4b5a-a2b3-ef0008d12259]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_edf94d78-58e3-455f-d598-dad6b1473dcd]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_E_f11bdeac-7788-4299-ee2a-abfca379235e]: This version of this provision applies to England only; a separate version has been created for Wales only

[^M_E_fb34801d-c5fe-431e-8941-2a6764dc6acd]: This version of this provision applies to Wales only; a separate version has been created for England only

[^M_F_0bc4a97f-b97d-442d-c9a5-a70df3d7b906]: Sch. 6 para. 2 revoked (9.1.2013) by The Energy Performance of Buildings (England and Wales) Regulations 2012 (S.I. 2012/3118), reg. 1(4), Sch. 3 (with reg. 44)

[^M_F_d6177ecb-d96c-4ae3-cacd-ab6aa294d8af]: Sch. 2 Class 1 para. 1 substituted (1.10.2014) by The Explosives Regulations 2014 (S.I. 2014/1638), reg. 1(1), Sch. 13 para. 24

[^M_F_e4bff57c-4943-4b5a-beb3-378540caf414]: Words substituted (E.) (6.4.2014) by The Building Regulations &c. (Amendment) Regulations 2014 (S.I. 2014/579)), regs. 1(4), 2(2) (with reg. 1(3))

[^V_W_03431229-f6f8-02a6-d44c-cd172b31f387]: Reg. 17(5) inserted (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 10(b), Sch. 1 (with regs. 1(3), 45-47)

[^V_W_0945d09a-7477-a92e-adee-67386c255ead]: Reg. 47 substituted (with corresponding changes to match the changes made for E. by S.I. 2012/3119, reg. 25, S.I. 2014/579, reg. 2(8) and S.I. 2016/285, reg. 2(17)) (W.) (1.11.2018) by The Building (Amendment) (Wales) Regulations 2018 (S.I. 2018/552), regs. 1(3), 4 (with reg. 6)

[^V_W_0c839eb1-aba0-41b2-1ffa-db0ab8f81a9b]: Word in Sch. 4 para. 1(g)(ii) substituted (W.) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 16(1)(b)(ii) (with reg. 29)

[^V_W_23c54c05-d955-e169-d501-0dadfd538692]: Words in reg. 42(2)(b) substituted for full stop (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 13(b) (with reg. 21)

[^V_W_288fe07a-363a-acee-2b57-1b569aad381e]: Reg. 44ZA inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 15 (with reg. 21)

[^V_W_2a7ec546-2570-3294-8b81-e950bcd0acfb]: Words in reg. 16(5) added (E., but only in relation to excepted energy buildings in W.) (6.4.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 9(b), Sch. 1 (with regs. 1(3), 45-47) (as amended by S.I. 2013/181, reg. 5, Sch.)

[^V_W_3c84bb84-0d9d-32b6-f3e4-284cdad6fc08]: Reg. 27C inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 11 (with reg. 21)

[^V_W_4517ce7b-3641-d080-2e38-e42956fa0a67]: Reg. 28 substituted (W. for remaining purposes) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 7(8) (with reg. 29)

[^V_W_4d48e60f-9dc6-99df-c6e3-40600519eae6]: Reg. 44A substituted (W. for remaining purposes) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 11(1) (with reg. 29)

[^V_W_5030a4fc-c90c-2285-dec1-089d5962891f]: Words in reg. 12(9) inserted (E., but only in relation to excepted energy buildings in W.) (6.4.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 6(b)(ii), Sch. 1 (with regs. 1(3), 45-47) (as amended by S.I. 2013/181, reg. 5, Sch.) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^V_W_55fb0d4c-5755-b483-b8db-e3914e949358]: Words in reg. 27(2)(a) inserted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(11)(a) (with reg. 1(3))

[^V_W_56789d53-e0c0-bce9-99a8-e7da8d5bbcf5]: Reg. 17(2A)(cb) inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 5(b) (with reg. 21)

[^V_W_5b8beddd-042c-d95a-65ca-8e259696d8ea]: Reg. 37(1) substituted (W.) (1.11.2018) by The Building (Amendment) (Wales) Regulations 2018 (S.I. 2018/552), regs. 1(3), 3(2) (with reg. 6)

[^V_W_6ca4ed94-598b-7dee-d3f8-deda46714f64]: Sch. 4 paras. 1(a)-(e) inserted (W. in relation to excepted energy buildings) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 16(1)(a) (with reg. 29)

[^V_W_7414d9bc-32cd-fc2e-bab7-91316c3a0686]: Reg. 17(1)-(2A) substituted for reg. 17(1)-(3) (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 10(a), Sch. 1 (with regs. 1(3), 45-47)

[^V_W_865b5058-d95a-2522-136f-9d12ba05bb49]: Reg. 6(3)(4) inserted (with a difference in the wording of reg. 6(3)) (W.) (13.1.2020) by The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(5) (with reg. 3)

[^V_W_88735a36-5935-8201-1f9e-8417f2a4aab9]: Reg. 7(2)-(4) inserted (with differences in reg. 7(2) and (4)(a)(iii)) (W.) (13.1.2020) by The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(6)(b) (with reg. 3)

[^V_W_8ad8116d-67a5-7ec9-c1d7-3e1a7ecd1933]: Reg. 36 substituted (W.) (1.11.2018) by The Building (Amendment) (Wales) Regulations 2018 (S.I. 2018/552), regs. 1(3), 3(1) (with reg. 6)

[^V_W_8b7b0490-7c19-4312-e8c1-3813e22947b3]: Pt. 9A inserted (W. but not in relation to excepted energy buildings) (8.4.2016) by The Building (Amendment) (Wales) Regulations 2016 (S.I. 2016/361), regs. 1(4), 2(4) (with regs. 1(3), 3)

[^V_W_8dbfaf88-3911-eb8b-607b-eb5bd4be5b5c]: Regs. 25A, 25B inserted (W. for remaining purposes) (19.4.2013 for specified purposes, 9.7.2013 for specified purposes, 1.1.2019 for specified purposes, 31.12.2020 in so far as not already in force) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 15 (with regs. 1(2)(3), 35, 36)

[^V_W_8de9d2bf-21ef-00ed-39b6-c7ef9c66780a]: Reg. 28 substituted (W. but not in relation to excepted energy buildings) (31.7.2014) by The Building (Amendment) (Wales) Regulations 2014 (S.I. 2014/110), regs. 1(3), 8 (with regs. 1(2), 10)

[^V_W_9117bedb-eef3-bdb7-b937-ed8f101b63ba]: Words in reg. 27(2)(b) inserted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(11)(b) (with reg. 1(3))

[^V_W_916840bd-d8c1-d659-d7e7-e0c32e0b9fc9]: Word in Sch. 4 para. 1(f) substituted (15.7.2011) by The Building (Amendment) Regulations 2011 (S.I. 2011/1515), regs. 1(2), 3(6)

[^V_W_9784f1ac-980c-8f5c-13aa-237a7e8ecac5]: Words in reg. 15(2)(b) substituted (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 8, Sch. 1 (with regs. 1(3), 45-47)

[^V_W_a6badd0a-10aa-f19d-e545-8284e0331dcc]: Reg. 17A inserted (E., but only in relation to excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 11, Sch. 1 (with regs. 1(3), 45-47) Reg. 17A inserted (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 9 (with reg. 1(2)(3))

[^V_W_aeebfe2b-24c2-ca10-0efe-5b195a7a56a5]: Words in reg. 27(4) substituted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(11)(e) (with reg. 1(3))

[^V_W_b982bf57-9cec-0b7f-76c4-62b9d7fbcec5]: Reg. 42(1)(1A) substituted for reg. 42(1) (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 13(a) (with reg. 21)

[^V_W_bc43d2fb-2799-b9f9-9697-76d433d5ae72]: Words in reg. 6(1)(a) omitted (15.7.2011) by virtue of The Building (Amendment) Regulations 2011 (S.I. 2011/1515), regs. 1(2), 3(3)

[^V_W_d60c6d55-8eb0-7b62-c636-658def4fc9c9]: Words in reg. 16(6) substituted (W. in relation to excepted energy buildings to match the form in which the text applies in relation to W. otherwise) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 5(4)(c) (with reg. 29)

[^V_W_d763ef42-d42e-0d94-9d84-8f89209924d5]: Word in reg. 14(3)(a) inserted (E., but only in relation to excepted energy buildings in W.) (1.10.2015) by The Building Regulations &c. (Amendment) Regulations 2015 (S.I. 2015/767), regs. 1(4)(b), 2(6) (with regs. 1(3), 4) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^V_W_e0d8082e-4ae7-5b1a-79d7-32a7d76b935c]: Words in Sch. 4 para. 1(g)(i) omitted (W.) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 16(1)(b)(i) (with reg. 29)

[^V_W_e185c0ff-6f84-4720-1aba-947c9cbb9688]: Reg. 16(2)(3) substituted (W. in relation to excepted energy buildings to match the form in which those sub-provisions apply in relation to W. otherwise) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 5(4)(a) (with reg. 29)

[^V_W_e9a94c88-da17-b458-4524-31fadcb696b1]: Reg. 7 renumbered as reg. 7(1) (W.) (13.1.2020) by The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(6)(a) (with reg. 3)

[^V_W_eb065039-4125-26c4-139d-e6edc6209ff4]: Reg. 17(2A)(g) and comma substituted for full stop (W. for remaining purposes) (17.6.2016) by The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(5)(c) (with reg. 1(3))

[^V_W_ed78d754-b50e-ca13-8d5b-19b3ff12a06d]: Word "or" in reg. 12(6)(a) inserted (W.) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 5(1)(a)(i) (with reg. 29)

[^V_W_f0ed2710-6461-d699-642e-6d303f901109]: Words in reg. 27(3)(a)(ii) inserted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(11)(d) (with reg. 1(3))

[^V_W_f2a1fc0f-2338-c461-9851-a8df3cbfe50a]: Reg. 26C inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 9 (with reg. 21)

[^V_W_f7fe0faf-5478-ccda-f4cb-5b422fcc2074]: Reg. 25 substituted (with corresponding changes to match the amendments previously made by S.I. 2012/3119, reg. 16, Sch. 1 and S.I. 2013/747, regs. 1(4), 14 but with a reference to "The Welsh Ministers" rather than to "The Secretary of State") (W. for remaining purposes) (8.6.2018) by The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 7(2) (with reg. 29)

[^V_W_f828cada-4a97-d145-76b8-894ab4c01cef]: Words in reg. 27(3)(a)(i) inserted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(11)(c) (with reg. 1(3))

[^V_W_fbf0299f-52c1-0812-1dac-ba75be093c62]: Reg. 17(2A)(c)(ca) substituted for reg. 17(2A)(c) (W. but not in relation to excepted energy buildings) (17.6.2016) by The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(5)(a) (with reg. 1(3))

[^key-ececef8a0458c258d9813e42bb8553fd]: Word in reg. 2(6)(a)(iv) omitted (W.) (20.12.2025) by virtue of The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(2)(a) (with reg. 3)

[^key-5003ed4b0f545cf01d1ee33a3069b17e]: Reg. 2(6)(b)-(d) substituted for reg. 2(6)(b) (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(2)(b) (with reg. 3)

[^key-504e4e590794fa93ace8db8f4e0f6e63]: Word in reg. 6(1)(c) substituted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(3) (with reg. 3)

[^key-1a0985bb45ebc21a470f23e48e191460]: Reg. 7(1A) inserted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(a) (with reg. 3)

[^key-30cb976bfe8c28a709afca0759847cd1]: Reg. 7(3)(da) inserted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(b)(i) (with reg. 3)

[^key-7384019a67faa6eb77754342b536c459]: Words in reg. 7(3)(e) inserted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(b)(ii) (with reg. 3)

[^key-a0315e7d8eceb30cce242c889dec4727]: Reg. 7(3)(ha) inserted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(b)(iii) (with reg. 3)

[^key-c71e6507c6cbb90a5e7ac94554ca63f2]: Word in reg. 7(3)(i) omitted (W.) (20.12.2025) by virtue of The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(b)(iv) (with reg. 3)

[^key-630cfaed6b568542e8abdb012d3106bd]: Reg. 7(3)(j)(k) and word inserted (W.) (20.12.2025) by The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(b)(v) (with reg. 3)

[^key-fc103fef46d4c50e306e3203b7612c40]: Words in reg. 7(4)(a)(iii) omitted (W.) (20.12.2025) by virtue of The Building (Amendment) (Wales) Regulations 2025 (S.I. 2025/704), regs. 1(1), 2(4)(c) (with reg. 3)

21

Installation, as a replacement, of a window, rooflight, roof window or door in an existing building other than a dwelling. This paragraph does not apply to glass which is load bearing or structural or which forms part of glazed curtain walling or a revolving door.

Exemption of the Mayor’s Office for Policing and Crime from procedural requirements

Certificate for building occupied before work is completed

17A

• (1) A relevant authority shall within the specified period give a completion certificate in respect of part or all of a building where building work is being carried out and where all of the following circumstances apply—

• (a) part or all of the building is to be occupied before the work is completed;

• (b) the building is subject to the Regulatory Reform (Fire Safety) Order 2005; and

• (c) the authority is satisfied, after taking all reasonable steps, that, regardless of completion of the current building work, regulation 38 and Part B of Schedule 1 are currently complied with in relation to those parts of the building which are to be occupied before completion of the work.

• (2) The specified period referred to in paragraph (1) is four weeks starting from the date that notice is received by the relevant authority in accordance with regulation 16(5).

• (3) A certificate given in accordance with this regulation shall be evidence (but not conclusive evidence) that the requirements specified in the certificate have been complied with, and the certificate shall contain this wording.

• (4) The certificate must include a statement describing its evidentiary effect, in terms substantially the same as paragraph (3).

• (5) Where the relevant authority is the regulator, it must send a copy of each certificate it gives under this regulation in relation to a building to the local authority for the area in which the building is situated.

Unauthorised building work

Consideration of high-efficiency alternative systems for new buildings

25A

• (1) Before construction of a new building starts, the person who is to carry out the work must analyse and take into account the technical, environmental and economic feasibility of using high-efficiency alternative systems (such as the following systems) in the construction, if available—

• (a) decentralised energy supply systems based on energy from renewable sources;

• (b) cogeneration;

• (c) district or block heating or cooling, particularly where it is based entirely or partially on energy from renewable sources; and

• (d) heat pumps.

• (2) The person carrying out the work must—

• (a) where the new building is a higher-risk building, ensure the application for building control approval in relation to the work is accompanied by a notice which states that the analysis referred to in paragraph (1) has been undertaken, is documented, and the documentation is available to the regulator for verification purposes;

• (b) in any other case, not later than the beginning of the day before the day on which the work starts, give the building control authority a notice which states that the analysis referred to in paragraph (1) has been undertaken, is documented, and the documentation is available to the authority for verification purposes; and

• (c) ensure that a copy of the analysis is available for inspection at all reasonable times on request by an officer of the building control authority.

• (3) An authorised officer of the building control authority may require production of the documentation in order to verify that this regulation has been complied with.

• (3A) Where the regulator is the building control authority by virtue of section 91ZB of the Act (the regulator: building control authority for other work), it must send a copy of each notice it receives under this regulation in relation to a building to the local authority for the area in which the building is situated.

• (4) The analysis referred to in paragraph (1)—

• (a) may be carried out for individual buildings or for groups of similar buildings or for common typologies of buildings in the same area; and

• (b) in so far as it relates to collective heating and cooling systems, may be carried out for all buildings connected to the system in the same area.

• (5) In this regulation—

• (a) “cogeneration” means simultaneous generation in one process of thermal energy and one or both of the following—

• (i) electrical energy;

• (ii) mechanical energy;

• (b) “district or block heating or cooling” means the distribution of thermal energy in the form of steam, hot water or chilled liquids, from a central source of production through a network of multiple buildings or sites, for the use of space or process heating or cooling;

• (c) “energy from renewable sources” means energy from renewable non-fossil sources, namely wind, solar, aerothermal, geothermal, hydrothermal and ocean energy, hydropower, biomass, landfill gas, sewage treatment plant gas and biogases; and

• (d) “heat pump” means a machine, a device or installation that transfers heat from natural surroundings such as air, water or ground to buildings or industrial applications by reversing the natural flow of heat such that it flows from a lower to a higher temperature. (For reversible heat pumps, it may also move heat from the building to the natural surroundings.)

Nearly zero-energy requirements for new buildings

25B

Where a building is erected, it must be a nearly zero-energy building.

CO2 emission rates for new buildings

CO2 emission rate calculations

Consequential improvements to energy performance

Energy performance certificates

Recommendation reports

29A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Energy assessors

Related party disclosures

Duty of care

Right to copy documents

Application of building regulations to educational buildings, buildings of statutory undertakers and Crown Buildings

Interpretation of Part 6

22

Installation of insulating material to the internal walls of a building.

23

Installation of insulating material to the external walls of a building, not including insulation of demountable-clad buildings

24

Installation of insulation material to both external and internal walls of a building (“hybrid insulation”), not including insulation of demountable-clad buildings.

3A

Installation of thermal insulation to suspended timber floors where the work—

• (a) consists of the installation of such insulation only; and

• (b) the work is not carried out in order to comply with any requirements of these Regulations.

SCHEDULE 4A — Green deal information

PART 1 — Green deal information to be included in energy performance certificates

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART 2 — Interpretation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Requirement B1 does not apply to any prison provided under section 33 of the Prison Act 1952 (power to provide prisons etc).

Requirements for the renovation or replacement of thermal elements

1

Installation of a heat-producing gas appliance. (This paragraph does not apply to the provision of a masonry chimney.)

2

Installation of heating or hot water system connected to a heat-producing gas appliance, or associated controls.

3

Installation of—

• (a) an oil-fired combustion appliance; or

• (b) oil storage tanks and the pipes connecting them to combustion appliances.

(This paragraph does not apply to the provision of a masonry chimney.)

4

Installation of a solid fuel burning combustion appliance. (This paragraph does not apply to the provision of a masonry chimney.)

5

Installation of a heating or hot water system connected to an oil-fired combustion appliance or its associated controls.

6

Installation of a heating or hot water system connected to a solid fuel burning combustion appliance or its associated controls.

7

Installation of a heating or hot water system connected to an electric heat source or its associated controls.

8

Installation of a mechanical ventilation or air conditioning system or associated controls, which does not involve work on a system shared with parts of the building occupied separately, in a building other than a dwelling.

9

Installation of an air conditioning or ventilation system in a dwelling, which does not involve work on systems shared with other dwellings.

10

Installation of a lighting system or electric heating system, or associated electrical controls.

11

Installation of fixed low or extra-low voltage electrical installations.

12

Installation of fixed low or extra-low voltage electrical installations as a necessary adjunct to or arising out of other work being carried out by the registered person.

13

Installation, as a replacement, of a window, rooflight, roof window or door in an existing dwelling.

14

Installation of a sanitary convenience, sink, washbasin, bidet, fixed bath, shower or bathroom in a dwelling, which does not involve work on shared or underground drainage.

15

Installation of a wholesome cold water supply or a softened wholesome cold water supply.

16

Installation of a supply of non-wholesome water to a sanitary convenience fitted with a flushing device which does not involve work on shared or underground drainage.

17

Installation in a building of a system to produce electricity, heat or cooling—

• (a) by microgeneration, or

• (b) from renewable sources (as defined in European Parliament and Council Directive 2009/28/EC of 23 April 2009 on the promotion of the use of energy from renewable sources).

18

Insertion of insulating material into the cavity walls of an existing building.

19

Installation, as a replacement, of the covering of a pitched or flat roof and work carried out by the registered person as a necessary adjunct to that installation. This paragraph does not apply to the installation of solar panels.

20

Installation, as a replacement, of a window, rooflight, roof window or door in an existing building other than a dwelling. This paragraph does not apply to glass which is load bearing or structural or which forms part of glazed curtain walling or a revolving door.

21

Installation of insulating material to the internal walls of a building.

22

Installation of insulating material to the external walls of a building, not including insulation of demountable-clad buildings.

23

Installation of insulation material to both external and internal walls of a building (“hybrid insulation”), not including insulation of demountable-clad buildings.

Provisions applicable to third party certification schemes

20A

• (1) This regulation applies to the extent that the building work consists only of work of a type described in column 1 of the Table in Schedule 3A and the work is inspected by a third party certifier described in column 2 of that Table and appointed in accordance with regulation 12(6)(c).

• (1A) Where this regulation applies and the building work in question relates to a higher-risk building, the client must make the person carrying out the work aware that the building is a higher-risk building.

• (2) Where this regulation applies, the building control authority are authorised to accept, as evidence that the requirements of regulations 4 and 7 have been complied with, a certificate to that effect by the third party certifier.

• (3) Where this regulation applies, the person carrying out the building work must, not more than 7 days after the completion of the work, notify the third party certifier that the work has been completed.

• (4) Where the third party certifier, having taken all reasonable steps to ascertain that it is the case, is satisfied within the limits of professional skill and care that the requirements of regulation 4 and 7 have been complied with, the third party certifier must, not more than 30 days after receiving notification of completion of the work under paragraph (3)—

• (a) give the occupier a copy of the certificate referred to in paragraph (2); and

• (b) give to the building control authority—

• (i) notice to that effect, or

• (ii) the certificate referred to in paragraph (2).

• (5) If the third party certifier is unable to certify that the requirements of regulations 4 and 7 have been complied with and therefore cannot provide the certificate referred to in paragraph (2), the third party certifier must notify the building control authority to that effect.

• (6) A certificate given in accordance with this regulation shall be evidence (but not conclusive evidence) that the requirements specified in the certificate have been complied with.

• (7) The certificate shall include a statement describing its evidentiary effect, in terms substantially the same as paragraph (6).

• (7A) Where the regulator is the building control authority by virtue of section 91ZB of the Act (the regulator: building control authority for other work), it must send a copy of each notice or certificate it receives under this regulation in relation to a building to the local authority for the area in which the building is situated.

26A

Where a dwelling is erected, it shall not exceed the target fabric energy efficiency rate for the dwelling that has been approved pursuant to regulation 25, applying the methodology of calculation and expression of the energy performance of buildings approved pursuant to regulation 24.

Fabric energy efficiency rate calculations

27A

• (1) This regulation applies where a dwelling is erected and regulation 26A applies.

• (2) The person carrying out the work must—

• (a) where the dwelling is within a higher-risk building, ensure the application for building control approval in relation to the work is accompanied by a notice which specifies—

• (i) the target fabric energy efficiency rate for the dwelling, calculated and expressed in accordance with the methodology approved pursuant to regulation 24,

• (ii) the fabric energy efficiency rate for the dwelling as designed, calculated and expressed in accordance with the methodology approved pursuant to regulation 24, and

• (iii) a list of specifications to which the dwelling is to be constructed;

• (b) in any other case, not later than the day before the work starts, give the building control authority a notice which specifies the matters set out in paragraphs (i) to (iii) of sub-paragraph (a).

• (3) The person carrying out the work must—

• (a) where the dwelling is within a higher-risk building, ensure the application for a completion certificate in relation to the work is accompanied by—

• (i) a notice which specifies—

• (aa) the target fabric energy efficiency rate for the dwelling, calculated and expressed in accordance with the methodology approved pursuant to regulation 24,

• (bb) the fabric energy efficiency rate for the dwelling as constructed, calculated and expressed in accordance with the methodology approved pursuant to regulation 24, and

• (cc) whether the dwelling has been constructed in accordance with the list of specifications referred to in paragraph (2), and, if not, a list of any changes to those specifications; or

• (ii) a certificate of the sort referred to in paragraph (4) accompanied by the information referred to in sub-paragraphs (aa) to (cc) of paragraph (i);

• (b) in any other case, not later than five days after the work has been completed, give the building control authority a notice which specifies the matters mentioned in sub-paragraphs (aa) to (cc) of sub-paragraph (a)(i) or a certificate of the sort mentioned in sub-paragraph (a)(ii).

• (4) A building control authority is authorised to accept, as evidence that the requirements of regulation 26A have been satisfied, a certificate to that effect by an energy assessor who is accredited to produce energy performance certificates for that category of building.

• (4A) Where the regulator is the building control authority by virtue of section 91ZB of the Act (the regulator: building control authority for other work), it must send a copy of each notice or certificate it receives under this regulation in relation to a building to the local authority for the area in which the building is situated.

• (5) In this Regulation, “specifications” means specifications used for the calculation of the fabric energy efficiency rate.

Consequential improvements to energy performance

Energy performance certificates

Recommendation reports

Energy assessors

Related party disclosures

Duty of care

Right to copy documents

Application of building regulations to educational buildings, buildings of statutory undertakers and Crown Buildings

Interpretation of Part 6

Column 1Type of Work	Column 2Person carrying out work
1. Installation of a heat-producing gas appliance. This paragraph does not apply to the provision of a masonry chimney.	A person, or an employee of a person, who is a member of a class of persons approved in accordance with regulation 3 of the Gas Safety (Installation and Use) Regulations 1998.
2. Installation of—(a) an oil-fired combustion appliance; or(b) oil storage tanks and the pipes connecting them to combustion appliances. This paragraph does not apply to the provision of a masonry chimney.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, Blue Flame Certification Limited, Building Engineering Services Competence Assessment Limited, Certsure LLP, ... or NAPIT Registration Limited, Oil Firing Technical Association Limited, ....
3. Installation of a solid fuel-burning combustion appliance other than a biomass appliance. This paragraph does not apply to the provision of a masonry chimney.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited, NAPIT Registration Limited or Oil Firing Technical Association Limited, ....
4. Installation of a heating or hot water system, or its associated controls.	A person, or an employee of a person, who is a member of a class of persons approved in accordance with regulation 3 of the Gas Safety (Installation and Use) Regulations 1998, or a person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Blue Flame Certification Limited, Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited, NAPIT Registration Limited or Oil Firing Technical Association Limited, ....
5. Installation of a mechanical ventilation or air conditioning system or associated controls, in a building other than a dwelling, that does not involve work on a system shared with parts of the building occupied separately.	A person registered in respect of that type of work by Blue Flame Certification Limited, Building Engineering Services Competence Assessment Limited, Certsure LLP or NAPIT Registration Limited, ....
6. Installation of an air conditioning or ventilation system in a dwelling, that does not involve work on a system shared with other dwellings.	A person registered in respect of that type of work by Blue Flame Certification Limited, Building Engineering Services Competence Assessment Limited, Certsure LLP or NAPIT Registration Limited, ....
7. Installation of an energy efficient lighting system or electric heating system, or associated electrical controls, in buildings other than dwellings.	A person registered in respect of that type of work by Blue Flame Certification Limited ..., Certsure LLP or NAPIT Registration Limited, ....
8. Installation of fixed low or extra-low voltage electrical installations in dwellings.	A person registered in respect of that type of work by ... ... Blue Flame Certification Limited ..., Certsure LLP, NAPIT Registration Limited or Oil Firing Technical Association Limited, ....
9. Installation of fixed low or extra-low voltage electrical installations in dwellings, as a necessary adjunct to or arising out of other work being carried out by the registered person.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Blue Flame Certification Limited ..., Certsure LLP or NAPIT Registration Limited, ....
10. Installation, as a replacement, of a window, rooflight, roof window or door in an existing dwelling.	A person registered in respect of that type of work by Assure Certification Limited, ... ... Blue Flame Certification Limited, CERTASS Limited, Certsure LLP, by Fensa Limited under the Fenestration Self-Assessment Scheme or by NAPIT Registration Limited ..., ....
11. Installation, as a replacement, of a window, rooflight, roof window or door in an existing building other than a dwelling. This paragraph does not apply to glass which is load bearing or structural or which forms part of glazed curtain walling or a revolving door.	A person registered in respect of that type of work by Assure Certification Limited, ... Blue Flame Certification Limited, CERTASS Limited, Certsure LLP, by Fensa Limited under the Fenestration Self-Assessment Scheme or by NAPIT Registration Limited ..., ....
12. Installation of a sanitary convenience, sink, washbasin, bidet, fixed bath, shower or bathroom in a dwelling, that does not involve work on shared or underground drainage.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited or NAPIT Registration Limited, ....
13. Installation of a wholesome cold water supply or a softened wholesome cold water supply.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited or NAPIT Registration Limited, ....
14. Installation of a supply of non-wholesome water to a sanitary convenience fitted with a flushing device, that does not involve work on shared or underground drainage.	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited or NAPIT Registration Limited, ....
15. Installation in a building of a system to produce electricity, heat or cooling—(a) by microgeneration; or(b) from renewable sources (as defined in Directive 2009/28/EC of the European Parliament and of the Council on the promotion of the use of energy from renewable sources).	A person registered in respect of that type of work by Association of Plumbing and Heating Contractors (Certification) Limited, ... Building Engineering Services Competence Assessment Limited, Certsure LLP, HETAS Limited, NAPIT Registration Limited or Oil Firing Technical Association Limited, ....
16. Installation, as a replacement, of the covering of a pitched or flat roof and work carried out by the registered person as a necessary adjunct to that installation. This paragraph does not apply to the installation of solar panels.	A person registered in respect of that type of work by NAPIT Registration Limited or the National Federation of Roofing Contractors Limited.
17. Insertion of insulating material into the cavity walls of an existing building.	A person registered in respect of that type of work by Blue Flame Certification Limited, CERTASS Limited, The Insulation Assurance Authority Limited ... under the Cavity Wall Insulation Self Certification Scheme, by Certsure LLP or NAPIT Registration Limited, ....
18. Installation of insulating material to the internal walls of a building, not including the installation of flexible thermal linings.	A person registered in respect of that type of work by Blue Flame Certification Limited, British Board of Agrément, CERTASS Limited, Certsure LLP or NAPIT Registration Limited, ....
19. Installation of insulating material to the external walls of a building, not including insulation of demountable-clad buildings.	A person registered in respect of that type of work by Blue Flame Certification Limited, British Board of Agrément, CERTASS Limited, Certsure LLP or NAPIT Registration Limited, ....
20. Installation of insulating material to the external and internal walls of a building (“hybrid insulation”), not including insulation of demountable-clad buildings, and not including the installation of flexible thermal linings.	A person registered in respect of that type of work by Blue Flame Certification Limited, British Board of Agrément, CERTASS Limited, Certsure LLP or NAPIT Registration Limited ....

SCHEDULE 3A — Third Party Certification Schemes and Exemptions from Requirement to Give Building Notice or an application for building control approval with full plans

Column 1Type of work	Column 2Person inspecting work
Electrical installations in dwellings.	A person registered in respect of that type of work by ... NAPIT Registration Limited ....

PART 7A — Automatic fire suppression systems

Provision of automatic fire suppression systems

37A

• (1) This regulation applies where building work consists of the erection or material change of use of a building in relation to—

• (a) care homes , which means places at which a care home service, within the meaning of Part 1 of the Regulation and Inspection of Social Care (Wales) Act 2016, is provided wholly or mainly to persons aged 18 or over;

• (aa) care homes for children, which means places at which a care home service, within the meaning of Part 1 of the Regulation and Inspection of Social Care (Wales) Act 2016, is provided wholly or mainly to persons aged under 18, but not—

• (i) an institution within the further education sector as defined by section 91(3) of the Further and Higher Education Act 1992;

• (ii) a place at which accommodation is provided for the purposes of—

• (aa) a holiday;

• (bb) a leisure, recreational, sporting, cultural or educational activity;

unless a person under 18 is accommodated there for more than 28 days in any 12 month period;

• (b) rooms for residential purposes other than rooms in—

• (i) a hostel providing temporary accommodation to those who are ordinarily resident elsewhere;

• (ii) an hotel;

• (iii) a prison or young offender institution; and

• (iv) a hospital;

• (c) dwelling-houses and flats,

subject to paragraphs (4) and (5).

• (2) For the purposes of this regulation a material change of use comprises or includes—

• (a) a change of use within regulation 5(a), (b), (c), (d), (g), (h) or (i);

• (b) a change in the purposes for which or the circumstances in which a building is used, so that after that change the building is used—

• (i) as a building described in paragraph (1)(a) where previously it was used as a building described in paragraph (1)(aa), or

• (ii) as a building described in paragraph (1)(aa) where previously it was used as a building described in paragraph (1)(a).

• (2A) Regulation 6 does not apply to the material change of use described in paragraph (2)(b).