http://www.legislation.gov.uk/ukpga/1984/55/section/21Building Act 1984 An Act to consolidate certain enactments concerning building and buildings and related matters.1984-10-31texttext/xmlenStatute Law Database2026-03-06Expert Participation2026-01-27 Part I Building Regulations<Addition ChangeId="key-d930641f9aa03c6bf89ad60eb2d8fb05-1695824940797" CommentaryRef="key-d930641f9aa03c6bf89ad60eb2d8fb05">Building control approval</Addition><CommentaryRef Ref="c926691"/>Provision of drainage.211. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Any question arising under subsection (4) below between a building control authority and the person by whom, or on whose behalf, plans are deposited an application for building control approval is made as to whether a proposed drain shall be required to connect with a sewer may on the application of that person be determined by the appropriate court or tribunal.4Where plans of a building or of an extension of a building are, in accordance with building regulations, deposited with an application for building control approval in respect of a building or an extension of a building is made to a building control authority, the building control authority, or on appeal the appropriate court or tribunal, may require a proposed drain to connect with a sewer where—athat sewer is within one hundred feet of the site of the building or, in the case of an extension, the site either of the extension or of the original building, and is at a level that makes it reasonably practicable to construct a drain to communicate with it, and, if it is not a public sewer, is a sewer that the person constructing the drain is entitled to use, andbthe intervening land is land through which that person is entitled to construct a drain.5Notwithstanding paragraph (a) of subsection (4) above, a drain may be required to be made to connect with a sewer that is not within the distance mentioned in that paragraph, but is otherwise such a sewer as is therein mentioned, if the authority undertake to bear so much of the expenses reasonably incurred in constructing, and in maintaining and repairing, the drain as may be attributable to the fact that the distance of the sewer exceeds the distance so mentioned.6If any question arises as to the amount of a payment to be made to a person under subsection (5) above, that question may on his application be determined by the appropriate court or tribunal, or he may require it to be referred to arbitration.7This section does not apply to works in connection with which approval is required in accordance with Schedule 3 to the Flood and Water Management Act 2010 (sustainable drainage).Pt. 1 (ss. 1-46) restricted by Channel Tunnel Act 1987 (c. 53, SIF 102), ss. 31(1), 45, Sch. 7 Pt. VI para. 2Pt. 1 (ss. 1-46) modified (1.4.1991) by National Health Service and Community Care Act 1990 (c. 19, SIF 113:2), s. 60(2), Sch. 8 para. 18(1)Pt. 1 (ss. 1-46) modified (17.7.1992) by S.I. 1992/1732, art. 4(1)Pt. 1 (ss. 1-46) excluded (18. 12. 1996) by 1996 c. 61, s. 38, Sch. 10 para.7PPt. I (ss. 1-46) excluded (26.3.2001) by S.I. 2001/1149, art. 4(5) (subject to art. 1(3))Ss. 21, 22, 23 extended by S.I. 1987/798, regs. 2(1), 4S. 21(1)(2) repealed (1.4.2002) by S.I. 2001/3335, reg. 3(1) (with reg. 4)Words in s. 21(3) substituted (1.4.2002) by S.I. 2001/3335, reg. 3(2)(a) (with reg. 4)S. 21(3)(a)(b) substituted for words (1.4.2002) by S.I. 2001/3335, reg. 3(2)(b) (with reg. 4)Words in s. 21(4) substituted (1.4.2002) by S.I. 2001/3335, reg. 3(3) (with reg. 4)Words in s. 21(3) substituted (1.10.2023 except in relation to W., 6.4.2024 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 6 para. 9(b); S.I. 2023/993, reg. 2(o)(i) (with reg. 6); S.I. 2024/207, reg. 2(d)(xii) (with regs. 3, 4, 8-12)Words in s. 21(6) substituted (1.10.2023 except in relation to W., 6.4.2024 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 6 para. 9(b); S.I. 2023/993, reg. 2(o)(i) (with reg. 6); S.I. 2024/207, reg. 2(d)(xii) (with regs. 3, 4, 8-12)Pt. 1 (ss. 1-46) excluded (22.7.2008) by Crossrail Act 2008 (c. 18), Sch. 14 para. 8Words in s. 21(3) substituted (1.10.2023 except in relation to W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 23(3); S.I. 2023/993, reg. 2(n)(xi) (with reg. 3)S. 21(7) added (2.5.2018 for W. for specified purposes, 7.1.2019 for W. in so far as not already in force) by Flood and Water Management Act 2010 (c. 29), s. 49(3), Sch. 3 para. 26(1) (with s. 49(1)(6)); S.I. 2018/557, arts. 2(b), 3(b)Words in s. 21 substituted (1.10.2023 except in relation to W., 6.4.2024 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 23(2); S.I. 2023/993, reg. 2(n)(xi) (with reg. 4); S.I. 2024/207, reg. 2(d)(xi), Sch. (with regs. 3, 4, 8-12)Words in s. 21(4) substituted (1.10.2023 except in relation to W., 6.4.2024 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 6 para. 9(b); S.I. 2023/993, reg. 2(o)(i) (with reg. 6); S.I. 2024/207, reg. 2(d)(xii) (with regs. 3, 4, 8-12)S. 16 cross-heading substituted (1.10.2023 except in relation to W., 6.4.2024 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 19; S.I. 2023/993, reg. 2(n)(ix); S.I. 2024/207, reg. 2(d)(xi), Sch. (with regs. 3, 4, 8-12)Words in s. 21(4) substituted (1.10.2023 except in relation to W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 23(4); S.I. 2023/993, reg. 2(n)(xi) (with reg. 3)Pt. 1 (ss. 1-46) excluded (23.2.2017) by High Speed Rail (London - West Midlands) Act 2017 (c. 7), s. 70(1), Sch. 22 para. 1Pt. 1 excluded (11.2.2021) by High Speed Rail (West Midlands - Crewe) Act 2021 (c. 2), s. 64(1), Sch. 22 para. 1(1)(a) (with Sch. 22 para. 1(2)(3))Pt. 1 (ss. 1-46) excluded (24.9.2014) by The Thames Water Utilities Limited (Thames Tideway Tunnel) Order 2014 (S.I. 2014/2384), art. 1, Sch. 19 Pt. 1 para. 3Pt. 1 excluded (4.10.2024) by The National Grid (Bramford to Twinstead Reinforcement) Order 2024 (S.I. 2024/958), art. 1, Sch. 15 para. 4 (with art. 40, Sch. 14)