The Building Regulations 2010

[^key-46c525148158368c5eec950d7a18579b]: Reg. 27B applied (with modifications) by S.I. 2010/2215, reg. 20(1)(2B) (as inserted (W.) (31.7.2014) 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))

[^key-4760dd35affe4bf5e2c5a870c4a4531e]: Sch. 1 Pt. R inserted (E., but only in relation to excepted energy buildings in W.) (9.5.2016) by The Building (Amendment) Regulations 2016 (S.I. 2016/490), regs. 1(4), 2(6) (with regs. 1(3), 3)

[^key-47af7e70ff15602b284bbd9ff04518ff]: Reg. 21(4)(c) and words inserted (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), 4(b) (with regs. 1(2), 10)

[^key-47c04ad95e58444aac132e7fba26ab2d]: Sch. 4 para. 1(a)-(e) omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2013) by virtue of The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 32(a)(i), 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]

[^key-47d76c230c7074f93350164d6cbfc8a9]: Reg. 7(2)-(4) inserted (E.) (21.12.2018) by The Building (Amendment) Regulations 2018 (S.I. 2018/1230), regs. 1(4), 2(7) (with regs. 1(3), 3)

[^key-48215b06f8af30e66e6d104966ef87b4]: Words in reg. 2 substituted (W.) (17.12.2024) by The Building (Amendment) (Wales) Regulations 2024 (S.I. 2024/742), regs. 1(3), 2(2)

[^key-4830f0ad8d9e35d385eab467e2711a78]: Words in reg. 19(1) 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. 12, Sch. 1 (with regs. 1(3), 45-47)

[^key-48cd9a427da2cc05df5ceefce5c16dea]: Word in Sch. 3 para. 15 substituted for comma (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 17(2)(p) (with reg. 21)

[^key-4993a2397cb9eb9d788e4a74d4d917ec]: Words in reg. 18(3) 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-49ed0418a9c4bfd969d58ec6f5ea063d]: Reg. 17(1)-(2A) substituted for reg. 17(1)-(3) (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 8(a) (with reg. 1(2)(3))

[^key-4a572b8b86a6ec6a4dc7a0049554deee]: Reg. 35(2) omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by virtue of The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(16)(b) (with reg. 1(3))

[^key-4abad981a18a0f11d637bc6d44f900a7]: Word in Sch. 3 para. 3 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(d) (with reg. 1(2))

[^key-4b2314029cdf509a1460390c7c157662]: Words in Sch. 3 para. 13 omitted (W. for remaining purposes) (15.1.2018) by virtue of The Building (Amendment) (Wales) Regulations 2017 (S.I. 2017/1274), regs. 1(2)(a), 2(3)(a) (with reg. 1(3))

[^key-4c1fb1e55159faf49341795c88369e8a]: Words in Sch. 3 para. 17 substituted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 17(2)(q)(i) (with reg. 21)

[^key-4cfbe0b33781ba7b95b3dfc317e67cc7]: Sch. 3 Table substituted (except for the reference to "HETAS Limited" in column 2 of para. 2) (with minor differences in punctuation and a reference to "The Cavity Insulation Guarantee Agency" rather than "Cavity Insulation Guarantee Agency Limited" in column 2 of para. 17) (W. for remaining purposes) (31.7.2015) by The Building (Amendment) (Wales) Regulations 2015 (S.I. 2015/1486), regs. 1(3)(a), 3, Sch. (with reg. 1(2))

[^key-4d3dc962ae5adee5ce0433e097789ed4]: Words in reg. 44B(a)(i) substituted (W.) (4.11.2024) by The Historic Environment (Wales) Act 2023 (Consequential Provision) (Secondary Legislation) Regulations 2024 (S.I. 2024/924), regs. 1(2), 52(a)

[^key-4dae814c7f83092798a51f02c0464c6f]: Reg. 27C inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 7 (with regs. 1(2), 17) (as amended (5.6.2023) by S.I. 2023/520, regs. 1(2), 3)

[^key-4e90eba7e0c39c8df7512a1700e8b89a]: Words in reg. 27A(1) omitted (W.) (23.11.2022) by virtue of The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 10(b) (with reg. 21)

[^key-4f469e98fe777b09888b90f3f2520a8d]: Words in reg. 35(1) omitted (E., but only in relation to educational buildings and buildings of statutory undertakers in W., Crown buildings in W., building work carried out or proposed to be carried out by Crown authorities in W., and excepted energy buildings in W.) (9.1.2013) by virtue of The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 23(c), Sch. 1 (with reg. 1(3)(4), 45-47)

[^key-4f6503f282836c21b57f285dadf16e1a]: Words in reg. 35(1) inserted (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 20(a) (with reg. 1(2)(3))

[^key-4fd73664aeac2c2bfb05a03aeee6eff8]: Words in reg. 2(1) inserted (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 3(a) (with reg. 1(2)(3))

[^key-503aa4e892cf1b5a2724aa4fdd6ad5f6]: Reg. 17A(5) inserted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(7)(b) (with regs. 22-24)

[^key-5046037b5924a2a5cbeb6c760c19b4bf]: Word in reg. 35 omitted (E., but only in relation to excepted energy buildings in W.) (1.10.2015) by virtue of The Building Regulations &c. (Amendment) Regulations 2015 (S.I. 2015/767), regs. 1(4)(b), 2(7)(a) (with reg. 1(3))

[^key-5070af9b78e89087e9abf7c18b5a133d]: Words in reg. 25 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(8) (with reg. 1(3)) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-5174eb4e3c3e1b72c7f6c88f3901f1fc]: Words in reg. 44C inserted (26.12.2022) by The Building etc. (Amendment) (England) (No. 2) Regulations 2022 (S.I. 2022/984), reg. 1(4), Sch. para. 6(6) (with reg. 3)

[^key-517830972e14493742bb5bd9977cf764]: Reg. 27C applied (with modifications) by S.I. 2010/2215, reg. 20(1)(2C) (as inserted (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 16(b)(c) (with regs. 1(2), 17)) (as amended (5.6.2023) by S.I. 2023/520, regs. 1(2), 3)

[^key-52226e0faf9670c967c93e5188a452d0]: Reg. 48 omitted (E.) (1.10.2023) by virtue of The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 17(2) (with regs. 22-24)

[^key-5287d4e2ddd933e4198dd91663262f74]: Reg. 2(6) inserted (with a difference in the wording of reg. 2(6)(b)) (W.) (13.1.2020) by The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(2) (with reg. 3)

[^key-52e63d41d6e346eb9bd6af5a025fd211]: Word in reg. 25C substituted (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(9)(a) (with reg. 1(3))

[^key-52ebe98c6541ab4a3f86c5a29c639449]: Reg. 5(k) and word inserted (W.) (13.1.2020) by The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(4)(b) (with reg. 3)

[^key-531a998c7bdb3e8ff20ad2ea022ae20a]: Word in Sch. 3 para. 14 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(o) (with reg. 1(2))

[^key-539548b5969b49a226d8b667b1719409]: Reg. 55(2) omitted (26.12.2022) by virtue of The Building etc. (Amendment) (England) (No. 2) Regulations 2022 (S.I. 2022/984), reg. 1(4), Sch. para. 7

[^key-53db4b5fec6962d863cba79099834baa]: Reg. 36 substituted (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(8) (with regs. 1(3), 4) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-53f8863aa8e27997dcbd95ce6936dd35]: Words in Sch. 3A heading substituted (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(22) (with regs. 22-24)

[^key-5409effb7523801307bf1195c4c71a21]: Reg. 13(1)(d) and word "; or" omitted (W. in relation to excepted energy buildings) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 5(2)(a)(ii)(iii) (with reg. 29)

[^key-55ba0018e7f874000e3d0ca7aa542a57]: Reg. 25 substituted (E., but only in relation to excepted energy buildings in W.) (6.4.2014) by The Building Regulations &c. (Amendment) (No.2) Regulations 2013 (S.I. 2013/1959), regs. 1(5), 4 (with reg. 1(3)) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-55f1b3adf1c3b16b9f07945ef851c108]: Words “, and the certificate shall contain this wording” in reg. 20(5) 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), 6(2)(b) (with reg. 29)

[^key-56305837f0f2ce9afe7db2093b6e7aa8]: Words in reg. 43(4) omitted (E., but only in relation to excepted energy buildings in W.) (31.12.2015) by virtue of The Building Regulations &c. (Amendment) Regulations 2015 (S.I. 2015/767), regs. 1(4)(c), 2(10)(b) (with reg. 1(3))

[^key-56baf29b186ec9fc3d5827b80eea5108]: Words in reg. 16(3A) substituted (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(5)(a) (with regs. 22-24)

[^key-56e7cda87fb5151bfee6a410f28e365e]: Word in Sch. 3 para. 6 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(g) (with reg. 1(2))

[^key-57113565215a7a801bfc6529a3a43b3d]: Words in reg. 43(3) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(18)(a) (with regs. 22-24)

[^key-5784b8c5881cc2781c8371c79a542c4b]: Words in reg. 44C inserted (W.) (1.7.2025) by The Building etc. (Amendment) (Wales) Regulations 2025 (S.I. 2025/377), regs. 1(3), 4(3)(b) (with reg. 3)

[^key-578d644e0251ee7da5505acd999fa90b]: Word in Sch. 3 para. 17 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(q)(ii) (with reg. 1(2))

[^key-57958cec3362477870bbcbe4b1b094e9]: Words in reg. 16(4) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 6(2)(a) (with regs. 22-24)

[^key-57ef337904915c8b88d198cd6c7f35c8]: Words in reg. 35(1) inserted (E., but only in relation to educational buildings and buildings of statutory undertakers in W., Crown buildings in W., building work carried out or proposed to be carried out by Crown authorities in W., and excepted energy buildings in W.) (9.1.2013) by The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 23(a), Sch. 1 (with reg. 1(3)(4), 45-47)

[^key-58ebcdb38ddb6dec03c6c7a97ddca71f]: Reg. 16(5A)(f) inserted (E.) (7.10.2025) by The Building Regulations etc. (Amendment) (England) Regulations 2025 (S.I. 2025/1017), regs. 1(2), 9(d) (with reg. 11(3)(4))

[^key-590d2469b1b37fdbc3f367684738cade]: Regulations: power to amend conferred (21.3.2012 for specified purposes, 28.1.2013 in so far as not already in force) by Energy Act 2011 (c. 16), ss. 9(2), 121(1) (with ss. 40, 41); S.I. 2012/873, art. 3(1)(b)(2); S.I. 2013/125, art. 2(b)

[^key-591057baa474c2cfe1de3a2a9853cc4f]: Words in reg. 47(a)(vi) substituted (E.) (6.4.2024) by The Building (Registered Building Control Approvers etc.) (England) Regulations 2024 (S.I. 2024/110), regs. 1(3), 38(6)(b)

[^key-5a28a0b3947430a91695e6ba5c0ef834]: Words in reg. 13(1A) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(3)(a) (with regs. 22-24)

[^key-5b5d7b65d71909ccbaf0abbc2f845989]: Words in reg. 12(7) substituted (W.) (1.1.2025) by The Building (Registered Building Control Approvers etc.) (Wales) Regulations 2024 (S.I. 2024/1268), regs. 1(2), 40

[^key-5b8aa97f26ac7609d1549b6ffaf5bb10]: Sch. 3 Table substituted (E., but only in relation to excepted energy buildings in W.) (18.4.2015) by The Building Regulations &c. (Amendment) Regulations 2015 (S.I. 2015/767), reg. 1(4)(a), Sch. 1 (with reg. 1(3))

[^key-5c0c9cef0fde84ed2896b00ca66cc1f7]: Reg. 13(1)(d) and word 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(5)(a)(ii) (with regs. 1(3), 4) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-5c523806285b1e31ad62ffffcdd4af39]: Words in reg. 9(3)(a) 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. 5, 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]

[^key-5cb7b49f182bfe2be9eea016d990a7bf]: Words in reg. 34(1) omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by virtue of The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(15) (with reg. 1(3))

[^key-5cfc8449a56fb260a7e185c74ac1597e]: Words in Sch. 3A omitted (E., but only in relation to excepted energy buildings in W.) (1.10.2014) by virtue of The Building (Amendment) Regulations 2014 (S.I. 2014/2362), regs. 1(4), 2(3) (with reg. 1(3))

[^key-5e5082d79c7e2043423ba4d193cb938a]: Words in reg. 26B inserted (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(12) (with reg. 1(3))

[^key-5f29ebcfee9848b2efd39ac0dd61b981]: Words in reg. 48(1)(d) inserted (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 23(a) (with reg. 1(2)(3))

[^key-5f42f1e79b8bbcc5ddc5f3aa5855dc4f]: Reg. 29 omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by virtue of The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(13) (with reg. 1(3))

[^key-600a448393503df6fffc87e2338b8058]: Reg. 55 added (E., but only in relation to excepted energy buildings in W.) (9.5.2016) by The Building (Amendment) Regulations 2016 (S.I. 2016/490), regs. 1(4), 2(5) (with reg. 1(3))

[^key-60348ca1a26076f629b68d4bc4f54ffb]: Reg. 6(1)(j) 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(4)(b) (with regs. 1(3), 5) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-603a69f4cdb00f453cb2baa3b01d1186]: Word in reg. 27A(3)(a)(i) omitted (W.) (23.11.2022) by virtue of The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 10(c) (with reg. 21)

[^key-61462c517d91cc524913b236647c8aab]: Word in Sch. 3 para. 17 omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by virtue of The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(19)(c) (with reg. 1(3))

[^key-6176318226366f589c27fec28067fdc9]: Words in reg. 42(3) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(17)(a) (with regs. 22-24)

[^key-625d9f2c7534435e10be5d11da797c0a]: Words in reg. 24(2) substituted (W. for remaining purposes) (17.6.2016) by The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(7)(a) (with reg. 1(3))

[^key-6285c914d0249b2942922f756a84a1f0]: Reg. 19(2) omitted (E.) (1.10.2023) by virtue of The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 14(1)(b) (with regs. 22-24)

[^key-62c5cd6a49eb56a6c6310361354aa2f4]: Reg. 27A(2)(3) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(13)(a) (with regs. 22-24)

[^key-632535902709999dfd70bc77298010bf]: Words in reg. 11(3) omitted (W. for remaining purposes) (17.6.2016) by virtue of The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(4) (with reg. 1(3))

[^key-64169ad6021021d32fc935589c3c1c39]: Words in Sch. 4 para. 1(g)(ii) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(23)(b) (with regs. 22-24)

[^key-649aa002b4dbce9371c4b50efc1cdb64]: Words in Sch. 4 para. 4 omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2013) by virtue of The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 32(a)(iv), 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]

[^key-6535e561a68a4e672e8af18a39661cb1]: Reg. 17(2) substituted (E.) (1.10.2023) by The Buil ding Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 6(3) (with regs. 22-24)

[^key-65fd8ffe12ac1117c5accff7465dcc2c]: Sch. 1 Pt. R heading substituted (E.) (26.12.2022) by The Building etc. (Amendment) (England) (No. 2) Regulations 2022 (S.I. 2022/984), reg. 1(4), Sch. para. 8(2) (with reg. 3)

[^key-667841f5a4958a51b46f6477287d68cf]: Word in Sch. 3 para. 5 substituted for comma (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 17(2)(f) (with reg. 21)

[^key-6715c67188f42a664f32c36fce038a18]: Reg. 20 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-6762153a90d4350ac9fc0a6e47b626e6]: Sch. 1 Pt. K substituted (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), Sch. 1, Sch. 2 (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]

[^key-67bd59c91c61d8e5c2efab47beb582b7]: Words in Sch. 1 Pt. R substituted (E.) (26.12.2022) by The Building etc. (Amendment) (England) (No. 2) Regulations 2022 (S.I. 2022/984), reg. 1(4), Sch. para. 8(4)(a) (with reg. 3)

[^key-6818d785e86a22c3d71a132a5f0c3cf2]: Words in reg. 27B(2)(a) inserted (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(15)(a) (with reg. 1(3))

[^key-68ae69cc01cf8208fc5d92b9fd9a6354]: Words “, or requirement M4(1), (2) or (3) (access to and use of dwellings)” in Sch. 1 Pt. H omitted (W. in relation to excepted energy buildings) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 13(a)(ii) (with reg. 29)

[^key-69442eaf8ff3faf60c8546044f33127a]: Words in reg. 6(1)(a) inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) (No. 2) Regulations 2021 (S.I. 2021/1392), regs. 1(2), 2(2) (with regs. 1(4), 4)

[^key-6a5109ae65d6a634de7bba4cac71da1c]: Words in reg. 16(1) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 15(1)(b)(i) (with regs. 22-24)

[^key-6a7e44efa8dfe215aeea128f1e0caffc]: Sch. 4 paras. 2, 3 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(2) (with reg. 29)

[^key-6aba41c6f971b002643a5576aa495aef]: Word in reg. 25C(a) omitted (W.) (23.11.2022) by virtue of The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 6(a)(ii) (with reg. 21)

[^key-6ad1f17ba604e0406e51932078683f99]: Regs. 40A, 40B inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 8 (with regs. 1(2), 17) (as amended (5.6.2023) by S.I. 2023/520, regs. 1(2), 3) Regs. 40A, 40B inserted (W.) (with a difference in the wording of reg. 40B(1)) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 12 (with reg. 21)

[^key-6afaf6e56377049844f8280655dddf58]: Reg. 13(1A) omitted (W. in relation to excepted energy buildings ) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 5(2)(b) (with reg. 29)

[^key-6b3767408aa763c51354d5ca75274bf7]: Words in reg. 44C inserted (26.12.2022) by The Building etc. (Amendment) (England) (No. 2) Regulations 2022 (S.I. 2022/984), reg. 1(4), Sch. para. 6(5) (with reg. 3)

[^key-6bd8cdc12c4cbfac9252569330d4420f]: Words in Sch. 3 para. 17 substituted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(q)(i) (with reg. 1(2))

[^key-6c5bc9c91637364f37fc9ec842b6bfbb]: Reg. 4(1A)-(1D) 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(3)(b) (with regs. 1(3), 4) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-6ccdec6aa68d180f4ff16202c2122b91]: Sch. 1 Pt. R para. R1 heading substituted (1.7.2025) by The Building etc. (Amendment) (Wales) Regulations 2025 (S.I. 2025/377), regs. 1(3), 4(4)(c)(i) (with reg. 3)

[^key-6d3c9e4227cb5b92c360dcd8515a194a]: Words in reg. 35(1) inserted (W. for remaining purposes) (19.4.2013) by The Building Regulations &c. (Amendment) (Wales) Regulations 2013 (S.I. 2013/747), regs. 1(4), 20(b)(ii) (with reg. 1(2)(3))

[^key-6df38d60d6b9858b0c3737890914b69f]: 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.)

[^key-6fb156cff49950d5ac238042114eb8df]: Words in reg. 21(3)(a)(iii) inserted (W.) (4.11.2024) by The Historic Environment (Wales) Act 2023 (Consequential Provision) (Secondary Legislation) Regulations 2024 (S.I. 2024/924), regs. 1(2), 50(c)

[^key-6fb62ed38b4114e346f7e67a239a35ca]: Words in reg. 13(5) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(3)(a) (with regs. 22-24)

[^key-6fd55e8edb35a6f05bc3528a4382bc3e]: Reg. 2(6) inserted (E.) (21.12.2018) by The Building (Amendment) Regulations 2018 (S.I. 2018/1230), regs. 1(4), 2(2) (with regs. 1(3), 3)

[^key-703049d8f7253d64aed55b907b653dbc]: Word in Sch. 3 para. 2 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(c) (with reg. 1(2))

[^key-70cc1e19219bf07aa9e2e02238370c97]: Sch. 1 Pt. O inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 11(c) (with regs. 1(2), 17) (as amended (5.6.2023) by S.I. 2023/520, regs. 1(2), 3)

[^key-719cd88dbdcfb654e7cad12d55b03053]: Word in reg. 5 omitted (W.) (13.1.2020) by virtue of The Building (Amendment) (Wales) Regulations 2019 (S.I. 2019/1499), regs. 1(4), 2(4)(a) (with reg. 3)

[^key-7232ec7bdfed06e33db6ecd105f0720c]: Words in reg. 34(1) omitted (W. for remaining purposes) (17.6.2016) by virtue of The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(18) (with reg. 1(3))

[^key-72423fccdd1bc54b2618b8476979d87e]: Sch. 1 Pt. M substituted (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(11)(b) (with regs. 1(3), 4)

[^key-72a560f72494ee75a320ca5994af0216]: 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)

[^key-732a8203b27731ae222efe156183237f]: Reg. 44B(a)(iii) and word "; or" 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), 11(2)(b)(c) (with reg. 29)

[^key-7440518bf80906a18bfb94a48f49cfd4]: Words in reg. 26 inserted (W. for remaining purposes) (17.6.2016) by The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(10) (with reg. 1(3))

[^key-74409e6b41061987ce95039925aac65a]: Sch. 1 Pt. N omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2013) by virtue of The Building Regulations &c. (Amendment) Regulations 2012 (S.I. 2012/3119), reg. 27(b), 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]

[^key-746e3881054632cc6e110df9e6b5c1f9]: Words in reg. 42(2) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(17)(a) (with regs. 22-24)

[^key-74a902a6a9a1121d69c1510b97174a6d]: Words in Sch. 2 Class 7 substituted (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. 28, 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]

[^key-74d6a8ed30b7adf1915ccbc98c8b7865]: Sch. 1 Pt. Q omitted (W. in relation to excepted energy buildings) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 13(e) (with reg. 29) Sch. 1 Pt. Q inserted (with additional words in column 1 and a different limit on application in column 2) (W.) (1.11.2018) by The Building (Amendment) (Wales) Regulations 2018 (S.I. 2018/552), regs. 1(3), 5 (with reg. 6)

[^key-74d6d6ae618c90d12be857df61dd8617]: Pt. 7A inserted (with minor changes to the text of reg. 37A(1)(a) and matching text for substituted reg. 37A(1)(b)(i)) (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), 9 (with reg. 29)

[^key-75cafb3bde5784a7f805e205996375b8]: Word in Sch. 3 para. 15 substituted for comma (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) Regulations 2021 (S.I. 2021/1391), regs. 1(1), 12(2)(p) (with reg. 1(2))

[^key-7674d443515b3fb1b6f52b485002847f]: Reg. 20(1A) inserted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 12(1) (with regs. 22-24)

[^key-780b63510fde3c8ddde27927762547ca]: Reg. 6(2)(e) 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(4)(c)(ii) (with regs. 1(3), 5) [Editorial note: This amendment no longer applies at all in relation to W. from 8.6.2018]

[^key-780fb01fa1323fd43d83b3fef94341ce]: 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))

[^key-782c98b17c54792c0dea4c24ff226f31]: Words in Sch. 1 Pt. H 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(11)(a)(ii) (with regs. 1(3), 4)

[^key-788fd4457fd6e4d329268c34f3a9f9bb]: Reg. 48(1)(i)(j) omitted (W. for remaining purposes) (17.6.2016) by virtue of The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(21) (with reg. 1(3))

[^key-78cf9a8ac29f2836388c535b2f7474d9]: Reg. 26B inserted (with corresponding changes to match the amendments previously made by S.I. 2014/110, reg. 6 and S.I. 2016/611, reg. 2(12)) (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(5) (with reg. 29)

[^key-793864e3e349ad58832cb9f472fede4d]: Reg. 56 inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) (No. 2) Regulations 2021 (S.I. 2021/1392), regs. 1(2), 2(4) (with regs. 1(4), 4)

[^key-79ac95efebd9d449aa081ab862643c96]: Words in Sch. 3 paras. 2-15, 17-20 omitted (W.) (23.11.2022) by virtue of The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 17(2)(b) (with reg. 21)

[^key-79dd4235ba45649ea85627b97d9bbd6e]: Sch. 1 Pt. S inserted (E.) (15.6.2022) by The Building Regulations etc. (Amendment) (England) (No. 2) Regulations 2021 (S.I. 2021/1392), regs. 1(2), 2(5) (with regs. 1(4), 4)

[^key-7a9ae630c5d6fe3e014cf119c7c119dc]: Words in reg. 15(3) substituted (E.) (1.10.2023) by The Building Regulations etc. (Amendment) (England) Regulations 2023 (S.I. 2023/911), regs. 1(2), 7(4)(c)(iii) (with regs. 22-24)

[^key-7ad0f0e2ef90d88cf34f363a2540b98a]: Reg. 44 modified (1.10.2010) by The Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215), regs. 1, 20(6)

[^key-7add35a9634354d886688af1cf94e0ab]: Words in reg. 19(1) omitted (W. for remaining purposes) (17.6.2016) by virtue of The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(6) (with reg. 1(3))

[^key-7c8e576acbfb66aab18d1a7c68816d14]: Words in Sch. 1 Pt. L inserted (W.) (23.11.2022) by The Building (Amendment) (Wales) Regulations 2022 (S.I. 2022/564), regs. 1(3), 16(a) (with reg. 21)

[^key-7cbd68eb5fce595ff54511a4ffbe6155]: Words “and regulation 26A” in reg. 43(2) omitted (W. in relation to excepted energy buildings) (8.6.2018) by virtue of The Building Regulations &c. (Amendment) (Excepted Energy Buildings) (Wales) Regulations 2018 (S.I. 2018/558), regs. 1(2), 10 (with reg. 29)

[^key-7d40a8d5d72e916e1ef0553682c28739]: Words in reg. 19(1) omitted (E., but only in relation to excepted energy buildings in W.) (6.4.2016) by virtue of The Building Regulations &c. (Amendment) Regulations 2016 (S.I. 2016/285), regs. 1(4), 2(6) (with reg. 1(3))

[^key-7d44b57914977fb092c9e70e14ffe138]: Sch. 1 Pt. R inserted (W. for remaining purposes) (8.4.2016) by The Building (Amendment) (Wales) Regulations 2016 (S.I. 2016/361), regs. 1(4), 2(5) (with regs. 1(3), 3)

[^key-7db71e5c92d3d1da22e7a887e02ff736]: Words in reg. 35(1) inserted (W. for remaining purposes) (17.6.2016) by The Building Regulations &c. (Amendment) (Wales) Regulations 2016 (S.I. 2016/611), regs. 1(4), 2(19)(a)(ii) (with reg. 1(3))

[^key-7e02c386bcefdd0e50065ed7b28448c0]: Words in Sch. 3 substituted (E., but only in relation to excepted energy buildings in W.) (28.2.2018) by The Building (Amendment) Regulations 2017 (S.I. 2017/856), regs. 1(2)(b), 2(b) (with reg. 1(2))