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Regulation 2 InterpretationI1

England and Wales

(1)

In these Regulations—

  • “the 1984 Act” (“Deddf 1984”) means the Building Act 1984;

  • “the 2010 Regulations” (“Rheoliadau 2010”) means the Building Regulations 2010f1;

  • “the 2023 Regulations” (“Rheoliadau 2023”) means the Building Safety (Description of Higher-Risk Building) (Design and Construction Phase) (Wales) Regulations 2023f2;

  • “active fire safety measures” (“mesurau diogelwch tân gweithredol”) includes sprinkler systems (including isolating valves and control equipment for that system), smoke control systems (including heating or ventilation and air conditioning systems with a smoke control function), fire or smoke dampers, fire alarm systems, lifts and lift shafts (including evacuation or fire-fighting lifts), and fire main and hydrants;

  • “agreed document” (“dogfen gytunedig”) means—

    1. (a)

      a plan or document in relation to HRB work, stage of HRB work or work to existing HRB that was approved by virtue of regulation 7(7) or (9) or regulation 15(7) or (9), or

    2. (b)

      where such a plan or document is revised—

      1. (i)

        in relation to a major change, the plan or document that was approved under regulation 24(7) or (9);

      2. (ii)

        in relation to a notifiable change, the version of the plan or document that accompanied the notice to the building control authority given under regulation 20(1);

      3. (iii)

        in relation to a recordable change, the version of the plan or document that was revised under regulation 18(2)(b) and in respect of which a record was made under regulation 18(2)(a);

  • “applicant” (“ceisydd”) except F1in Part 6 of these Regulations (see regulations 46(2) and 50(1)) means the client or the client together with the person making the application;

  • “building control approval” (“cymeradwyaeth rheolaeth adeiladu”) has the meaning given in paragraph 1B(2) of Schedule 1 to the 1984 Act;

  • “building control approval application for HRB work” (“cais am gymeradwyaeth rheolaeth adeiladu ar gyfer gwaith ARU”) has the meaning given in regulation 3(a);

  • “building control approval application for work to existing HRB” (“cais am gymeradwyaeth rheolaeth adeiladu ar gyfer gwaith i ARU presennol”) has the meaning given in regulation 11(1)(a);

  • “building control authority” (“awdurdod rheolaeth adeiladu”) has the meaning given in section 121A of the 1984 Actf3;

  • “building regulations” (“rheoliadau adeiladu”) has the meaning given in section 122 of the 1984 Act;

  • “Building Regulations compliance statement” (“datganiad cydymffurfedd â’r Rheoliadau Adeiladu”) means a document in accordance with paragraph 4 of Schedule 1;

  • “change control application” (“cais rheolaeth newid”) has the meaning given in regulation 18(5);

  • “change control log” (“lòg rheolaeth newid”) has the meaning given in regulation 19(1);

  • “change control plan” (“cynllun rheolaeth newid”) means a document in accordance with paragraph 3 of Schedule 1;

  • “commercial unit” (“uned fasnachol”) means a part of a building in separate occupation which does not contain a flat or residential room;

  • “competence declaration” (“declarasiwn cymhwysedd”) means a statement in accordance with paragraph 1 of Schedule 1;

  • “completion certificate” (“tystysgrif gwblhau”) means a certificate issued under regulation 43;

  • “completion certificate application” (“cais am dystysgrif gwblhau”) has the meaning given in regulation 39(1);

  • “compliance declaration” (“declarasiwn cydymffurfedd”)—

    1. (a)

      where any appointment of a principal contractor (or sole contractor) or principal designer (or sole or lead designer) ends before a completion certificate application is submitted to the building control authority, means a statement provided under regulation 29(3) (new principal contractor or principal designer etc: notification);

    2. (b)

      where any appointment of a principal contractor (or sole contractor) or principal designer (or sole or lead designer) has not ended before a completion certificate application has been submitted to the building control authority, has the meaning given in regulation 39(5);

  • “compliance explanation” (“eglurhad cydymffurfedd”) has the meaning given in regulation 19(2)(g);

  • “construction control plan” (“cynllun rheolaeth adeiladu”) means a document in accordance with paragraph 2 of Schedule 1;

  • “controlled change” (“newid a reolaethir”) has the meaning given in regulation 18(1);

  • F2“electronic facility” ("cyfleuster electronig") has the meaning given in regulation 31(13);

  • “enforcing authority” (“awdurdod gorfodi”) has the meaning given by article 25 of the Regulatory Reform (Fire Safety) Order 2005f4;

  • “exempt work” (“gwaith esempt”) has the meaning given in regulation 56;

  • “fire and emergency file” (“ffeil tân ac argyfwng”) means a document in accordance with paragraph 5 of Schedule 1;

  • “fire safety compliance information” (“gwybodaeth am gydymffurfedd o ran diogelwch tân”) has the meaning given in regulation 12(3)(d);

  • F3“fire safety information” (“gwybodaeth am ddiogelwch tân”) means information relating to the following—

    1. (a)

      the design and construction of the building and the services, fittings and equipment provided in or in connection with the building;

    2. (b)

      the design of the material change of use and building work to implement it;

    3. (c)

      the composition of materials used;

    which will assist the responsible person to operate and maintain the building with reasonable safety;

  • “fixed building services” ("gwasanaethau sefydlog adeilad") has the meaning given in regulation 2(1) of the 2010 Regulations;

  • “golden thread information” (“gwybodaeth llinyn aur") has the meaning given in regulation 31(13);

  • “HRB work” (“gwaith ARU”) means—

    1. (a)

      the construction of a higher-risk building;

    2. (b)

      work to an existing building that causes it to become a higher-risk building together with any work to the building carried out at the same time as that work;

    3. (c)

      such work, if any, which is necessary to ensure a building that undergoes a material change of use to become a higher-risk building complies with the applicable requirements listed in regulation 6 of the 2010 Regulations (requirements relating to material change of use) together with any work to the building carried out at the same time as that work;

  • “higher-risk building” (“adeilad risg uwch”) has the meaning given in regulation 3 of the 2023 Regulations;

  • “local authority” (“awdurdod lleol”) has the meaning given by section 126 of the 1984 Act;

  • “magistrates’ court” (“llys ynadon”) means a magistrates’ court, within the meaning given by section 148 of the Magistrates’ Courts Act 1980f5, in England and Wales;

  • “major change” (“newid mawr”) has the meaning given in regulation 26(1);

  • “mandatory occurrence reporting plan” (“cynllun adrodd mandadol am achlysuron”) is a plan describing the mandatory occurrence reporting system;

  • “mandatory occurrence reporting system” (“system adrodd mandadol am achlysuron”) means a system required under regulation 32;

  • “notifiable change” (“newid hysbysadwy”) has the meaning given in regulation 26(1);

  • “owner” (“perchennog”) has the meaning given in section 126 of the 1984 Act;

  • “partial completion certificate” (“tystysgrif cwblhau rhannol”) means a certificate issued under regulation 44(14);

  • “partial completion certificate application” (“cais am dystysgrif cwblhau rhannol”) has the meaning given in regulation 44(2);

  • “partial completion strategy” (“strategaeth cwblhau rhannol”) means a document under paragraph 6 of Schedule 1;

  • “passive fire safety measures” (“mesurau diogelwch tân goddefol”) includes the cavity barriers, fire door sets, duct dampers, fire shutters and other fire separating elements;

  • “recordable change” (“newid cofnodadwy”) means a controlled change which is neither a major change nor a notifiable change;

  • “regularisation certificate” (“tystysgrif unioni”) has the meaning given in regulation 46(7);

  • “regularisation certificate application” (“cais am dystysgrif unioni”) has the meaning given in regulation 46(2);

  • “residential rooms” (“ystafelloedd preswyl”) means a room, or a suite of rooms, which is not a flat and which is used solely by one or more persons to live and sleep and includes a room in a hall of residence or a residential home, but does not include a room in a hospital or similar establishment, which is used for patient accommodation;

  • “responsible person” (“person cyfrifol”) has the meaning given in article 3 of the Regulatory Reform (Fire Safety) Order 2005;

  • “scheme work” (“gwaith cynllun”) means work to which regulation 20 (provisions applicable to self-certification schemes) of the 2010 Regulations applies;

  • “sewerage undertaker” (“ymgymerwr carthffosiaeth”) means a person appointed under section 6 of the Water Industry Act 1991f6 for the area in which the building is, or is to be, situated;

  • “work to existing HRB” (“gwaith i ARU presennol”) means any work relating to a higher-risk building which is not HRB work;

  • “working day” (“diwrnod gwaith”) means any day which is not Saturday, Sunday, Christmas Day, Good Friday or a day which is a bank holiday in England and Wales under the Banking and Financial Dealings Act 1971f7.

(2)

In these Regulations—

(a)

“building work”, “client”, “contractor”, “designer”, “domestic client”, “flat”, “material change of use”, “principal contractor”, “principal designer”, “project”, “sole contractor” and “sole or lead designer” have the meanings given in regulation 2 of the 2010 Regulations;

(b)

a reference to appointment as a principal contractor or principal designer is to appointment under regulation 11U (principal designer and principal contractor) of the 2010 Regulationsf8, or assignment of duties under regulation 11T, and that reference includes an appointment which is certified under regulation 11U(2) of those Regulationsf9.

Annotations

Textual amendments

F1

Words in reg. 2(1) substituted (20.7.2026) by The Building etc. (Amendment) (No. 2) (Wales) Regulations 2026 (W.S.I. 2026/112), regs. 1(2), 7(2)(a)

F2

Words in reg. 2(1) inserted (20.7.2026) by The Building etc. (Amendment) (No. 2) (Wales) Regulations 2026 (W.S.I. 2026/112), regs. 1(2), 7(2)(c)

F3

Words in reg. 2(1) substituted (20.7.2026) by The Building etc. (Amendment) (No. 2) (Wales) Regulations 2026 (W.S.I. 2026/112), regs. 1(2), 7(2)(b)

Commencement

I1

Reg. 2 in force at 1.7.2026, see reg. 1(3)

Footnotes

f1

S.I. 2010/2214, amended by S.I. 2012/3119, 2013/747 (W. 89), 2013/2621 (W. 258), 2013/2730 (W. 264), 2014/110 (W. 10), 2015/1486 (W. 165), 2016/361 (W. 113), 2016/611 (W. 168), 2017/1274 (W. 296), 2018/552 (W. 94), 2018/588 (W. 97), 2019/1499 (W. 275), 2022/564 (W. 130), 2022/993 (W. 210), 2024/742 (W. 103), 2024/1268 (W. 214), 2025/377 (W. 74) and 2025/704 (W. 119). There are other amending instruments, but none is relevant to this Regulations.

f2

S.I. 2023/1210 (W. 213).

f3

Section 121A of the 1984 Act was inserted by section 32(4) of the 2022 Act.

f4

S.I. 2005/1541, to which there are amendments not relevant to these Regulations.

f5

1980 c. 43.

f6

1991 c. 56.

f7

1971 c. 80.

f8

Regulation 11U was inserted by S.I. 2025/1320 (W. 215).

f9

Regulation 2 was amended by and regulation 11U inserted by S.I. 2025/1320 (W. 215).