en-gb	WELSH STATUTORY INSTRUMENTS
cy-gb	OFFERYNNAU STATUDOL CYMRU

en-gb	2025 No. (W. )
cy-gb	2025 Rhif (Cy. )

en-gb	BUILDING AND BUILDINGS, WALES
cy-gb	ADEILADU AC ADEILADAU, CYMRU

en-gb	The Building etc. (Amendment) (Wales) Regulations 2025
cy-gb	Rheoliadau Adeiladu etc. (Diwygio) (Cymru) 2025

en-gb	EXPLANATORY NOTE
cy-gb	NODYN ESBONIADOL

en-gb	These Regulations amend the Building Regulations 2010 (“Building Regulations”) as they apply in relation to Wales, and the Building (Registered Building Control Approvers etc.) (Wales) Regulations 2024 (“Approvers Regulations”).
cy-gb	Mae’r Rheoliadau hyn yn diwygio Rheoliadau Adeiladu 2010 (“Rheoliadau Adeiladu”) fel y maent yn gymwys o ran Cymru, a Rheoliadau Adeiladu (Cymeradwywyr Cofrestredig Rheolaeth Adeiladu etc.) (Cymru) 2024 (“Rheoliadau Cymeradwywyr”).

en-gb	The amendments made by these Regulations impose new requirements for digital infrastructure and connectivity in newly built dwellings.
cy-gb	Mae’r diwygiadau a wneir gan y Rheoliadau hyn yn gosod gofynion newydd ar gyfer seilwaith digidol a chysylltedd mewn anheddau sy’n cael eu hadeiladu o’r newydd.

en-gb	(This note is not part of the Regulations)
cy-gb	(Nid ywʼr nodyn hwn yn rhan oʼr Rheoliadau)

en-gb	Regulation 3 makes transitional provision under which the new requirements do not apply.
cy-gb	Mae rheoliad 3 yn gwneud darpariaeth drosiannol nad yw’r gofynion newydd yn gymwys odani.

en-gb	A copy can be obtained from the Welsh Government, Cathays Park, Cardiff, CF10 3NQ and on the website at www.gov.wales.
cy-gb	Gellir cael copi oddi wrth: Llywodraeth Cymru, Parc Cathays, Caerdydd, CF10 3NQ ac ar y wefan ar www.llyw.cymru.

en-gb	Regulation 4(2) inserts new regulations 44ZAA to 44ZC into the Building Regulations.
cy-gb	Mae rheoliad 4(2) yn mewnosod rheoliadau newydd 44ZAA i 44ZC yn y Rheoliadau Adeiladu.

en-gb	These amendments require a person who is erecting a new dwelling to submit to the local authority, prior to commencement of building work, particulars of any connection to a public electronic communications network to be provided for that dwelling, alongside any evidence which supports their reliance on the exemptions set out in regulations 44ZB and 44ZC, which modify or exclude the new requirements in certain cases.
cy-gb	Mae’r diwygiadau hyn yn ei gwneud yn ofynnol i berson sy’n codi annedd newydd gyflwyno i’r awdurdod lleol, cyn cychwyn ar waith adeiladu, fanylion unrhyw gysylltiad â rhwydwaith cyfathrebu electronig cyhoeddus sydd i’w ddarparu ar gyfer yr annedd honno, ynghyd ag unrhyw dystiolaeth sy’n ategu ei ddibyniaeth ar yr esemptiadau a nodir yn rheoliadau 44ZB a 44ZC, sy’n addasu neu’n eithrio’r gofynion newydd mewn achosion penodol.

en-gb	Regulation 4(4) inserts new paragraphs RA1 and RA2 into Schedule 1 to the Building Regulations.
cy-gb	Mae rheoliad 4(4) yn mewnosod paragraffau newydd RA1 ac RA2 yn Atodlen 1 i’r Rheoliadau Adeiladu.

en-gb	Made ***
cy-gb	Gwnaed ***

en-gb	Those paragraphs contain new requirements relating to the provision, within newly built dwellings, of “gigabit-ready physical infrastructure” and a connection to a “gigabit-capable public electronic communications network” (those terms being defined in regulation 44C of the Building Regulations, as amended by regulation 4(3) of these Regulations).
cy-gb	Mae’r paragraffau hynny yn cynnwys gofynion newydd sy’n ymwneud â darparu, o fewn anheddau sy’n cael eu hadeiladu o’r newydd, “gigabit-ready physical infrastructure” a chysylltiad â “gigabit-capable public electronic communications network” (y diffinnir y termau hynny yn rheoliad 44C o’r Rheoliadau Adeiladu, fel y mae wedi ei ddiwygiwyd gan reoliad 4(3) o’r Rheoliadau hyn).

en-gb	Regulation 5 contains related amendments to the Approvers Regulations.
cy-gb	Mae rheoliad 5 yn cynnwys diwygiadau cysylltiedig i’r Rheoliadau Cymeradwywyr.

en-gb	( ) The functions conferred on the Secretary of State by sections 1, 3(1),  34 and 47(1) of, and paragraphs 7, 8, and 10 of Schedule 1  to, the Building Act 1984 (c.55) were transferred to the Welsh Ministers, as far as they are exercisable in relation to Wales, by the Welsh Ministers (Transfer of Functions) (No. 2) Order 2009 (S.I. 2009/3019) (“the 2009 Order”) and by section 54 of the Wales Act 2017 (c.4).
cy-gb	( ) Cafodd y swyddogaethau a roddwyd i’r Ysgrifennydd Gwladol gan adrannau 1, 3(1), 34 a 47(1) o Ddeddf Adeiladu 1984 (p.55), a pharagraffau 7, 8 a 10 o Atodlen 1 iddi, eu trosglwyddo i Weinidogion Cymru, i’r graddau y maent yn arferadwy o ran Cymru, gan Orchymyn Gweinidogion Cymru (Trosglwyddo Swyddogaethau) (Rhif 2) 2009 (O.S. 2009/3019) (“Gorchymyn 2009”) a chan adran 54 o Ddeddf Cymru 2017 (p. 4).

en-gb	The Building Act 1984 gives the Secretary of State the power to approve and issue documents containing practical guidance with respect to requirements contained in the Building Regulations.
cy-gb	Mae Deddf Adeiladu 1984 yn rhoi’r pŵer i’r Ysgrifennydd Gwladol i gymeradwyo a chyhoeddi dogfennau sy’n cynnwys canllawiau ymarferol mewn cysylltiad â gofynion sydd wedi eu cynnwys yn y Rheoliadau Adeiladu.

en-gb	( ) Section 1 was amended by section 1 of the Sustainable and Secure Buildings Act 2004 (c. 22) (“the 2004 Act”) and by paragraph 2 of Schedule 5 to the Building Safety Act 2022 (c. 30) (“the 2022 Act”).
cy-gb	( ) Diwygiwyd adran 1 gan adran 1 o Ddeddf Adeiladau Cynaliadwy a Diogel 2004 (p. 22) (“Deddf 2004”), a chan baragraff 2 o Atodlen 5 i Ddeddf Diogelwch Adeiladau 2022 (p. 30) (“Deddf 2022”).

en-gb	That power is exercisable by the Welsh Ministers insofar as it applies to Wales.
cy-gb	Mae’r pŵer hwnnw yn arferadwy gan Weinidogion Cymru i’r graddau y mae’n gymwys o ran Cymru.

en-gb	There are other amending instruments, but none are relevant to these Regulations.
cy-gb	Mae offerynnau diwygio eraill ond nid yw’r un ohonynt yn berthnasol i’r Rheoliadau hyn.

en-gb	Approved Document R Volume 1 2025 edition contains practical guidance on meeting the new requirements inserted into the Building Regulations by this instrument.
cy-gb	Mae Dogfen Gymeradwy R Cyfrol 1, rhifyn 2025, yn cynnwys canllawiau ymarferol ar fodloni’r gofynion newydd sydd wedi eu mewnosod yn y Rheoliadau Adeiladu gan yr offeryn hwn.

en-gb	For the definitions of “appropriate national authority” and “prescribed” see section 126 of the Building Act 1984.
cy-gb	Ar gyfer y diffiniadau o “appropriate national authority” a “prescribed” gweler adran 126 o Ddeddf Adeiladu 1984.

en-gb	The Approved Documents are published by the Welsh Ministers and may be accessed at www.gov.wales.
cy-gb	Mae’r Dogfennau Cymeradwy wedi eu cyhoeddi gan Weinidogion Cymru a gellir eu gweld ar www.llyw.cymru.

en-gb	The Welsh Ministers’ Code of Practice on the carrying out of Regulatory Impact Assessments was considered in relation to these Regulations.
cy-gb	Ystyriwyd Cod Ymarfer Gweinidogion Cymru ar gynnal Asesiadau Effaith Rheoleiddiol mewn perthynas â’r Rheoliadau hyn.

en-gb	—  The title of these Regulations is the Building etc. (Amendment) (Wales) Regulations 2025.
cy-gb	—  Enw’r Rheoliadau hyn yw Rheoliadau Adeiladu etc. (Diwygio) (Cymru) 2025.

en-gb	As a result, a regulatory impact assessment has been prepared as to the likely costs and benefits of complying with these Regulations.
cy-gb	O ganlyniad, lluniwyd asesiad effaith rheoleiddiol o’r costau a’r manteision sy’n debygol o ddeillio o gydymffurfio â’r Rheoliadau hyn.

en-gb	“building notice” (“hysbysiad adeiladu”) has the meaning given by regulation 2 of the Building Regulations;
cy-gb	mae i “hysbysiad adeiladu” yr ystyr a roddir i “building notice” gan reoliad 2 o’r Rheoliadau Adeiladu;

en-gb	“Building Regulations” (“Rheoliadau Adeiladu”) means the Building Regulations 2010( );
cy-gb	ystyr “Rheoliadau Adeiladu” (“Building Regulations”) yw Rheoliadau Adeiladu 2010( );

en-gb	“building work” (“gwaith adeiladu”) has the meaning given by regulation 3(1) of the Building Regulations;
cy-gb	mae i “gwaith adeiladu” yr ystyr a roddir i “building work” gan reoliad 3(1) o’r Rheoliadau Adeiladu;

en-gb	“full plans” (“planiau llawn”) has the meaning given by regulation 2 of the Building Regulations;
cy-gb	mae i “planiau llawn” yr ystyr a roddir i “full plans” gan reoliad 2 o’r Rheoliadau Adeiladu;

en-gb	“initial notice” (“hysbysiad cychwynnol”) has the meaning given by section 47(1)(a) of the Building Act 1984;
cy-gb	mae i “hysbysiad cychwynnol” yr ystyr a roddir i “initial notice” gan adran 47(1)(a) o Ddeddf Adeiladu 1984;

en-gb	“local authority” (“awdurdod lleol”) means a county council or county borough council in Wales.
cy-gb	ystyr “awdurdod lleol” (“local authority”) yw cyngor sir neu gyngor bwrdeistref sirol yng Nghymru;

en-gb	“Approvers Regulations” (“Rheoliadau Cymeradwywyr”) means the Building (Registered Building Control Approvers etc.) (Wales) Regulations 2024( );
cy-gb	ystyr “Rheoliadau Cymeradwywyr” (“Approvers Regulations”) yw Rheoliadau Adeiladu (Cymeradwywyr Cofrestredig Rheolaeth Adeiladu etc.)

en-gb	There are other amending instruments, but none are relevant to these Regulations.
cy-gb	Mae offerynnau diwygio eraill, ond nid yw’r un ohonynt yn berthnasol i’r Rheoliadau hyn.

en-gb	Laid before Senedd Cymru ***
cy-gb	Gosodwyd gerbron Senedd Cymru ***

en-gb	Transitional provision
cy-gb	Darpariaeth drosiannol

en-gb	Coming into force 1 July 2025
cy-gb	Yn dod i rym 1 Gorffennaf 2025

en-gb	( ) S.I.2024/1268.
cy-gb	( ) O.S. 2024/1268.

en-gb	These Regulations revoke and replace the Building (Approved Inspectors etc.) Regulations 2010 (S.I. 2010/2215) in relation to Wales.
cy-gb	Mae’r Rheoliadau hyn yn dirymu ac yn disodli Rheoliadau Adeiladu (Arolygwyr Cymeradwy etc.) 2010 (O.S. 2010/2215) o ran Cymru.

en-gb	The Welsh Ministers make these Regulations in exercise of the powers conferred on them( ) by sections 1, 3(1), 34 and 47(1) of, and paragraphs 7, 8 and 10 of Schedule 1 to, the Building Act 1984( ).
cy-gb	Mae Gweinidogion Cymru yn gwneud y Rheoliadau hyn drwy arfer y pwerau a roddir iddynt( ) gan adrannau 1, 3(1), 34 a 47(1) o Ddeddf Adeiladu 1984( ) a pharagraffau 7, 8 a 10 o Atodlen 1 iddi.

en-gb	is started within the period of 12 months beginning with that day.
cy-gb	yn dechrau o fewn y cyfnod o 12 mis sy’n dechrau â’r diwrnod hwnnw.

en-gb	In paragraph (1), “previously notified work” means building work in respect of which—
cy-gb	Ym mharagraff (1), ystyr “gwaith yr hysbyswyd amdano yn flaenorol” yw gwaith adeiladu y mae, mewn cysylltiad ag ef—

en-gb	Section 47(1) was amended by section 8(2) of the 2004 Act.
cy-gb	Diwygiwyd adran 47(1) gan adran 8(2) o Ddeddf 2004.

en-gb	( ) Part 9A (regulations 44A to 44C) was inserted, in relation to buildings in Wales, by S.I. 2016/361 (W. 113).
cy-gb	( ) Mewnosodwyd Rhan 9A (rheoliadau 44A i 44C), mewn perthynas ag adeiladau yng Nghymru, gan O.S. 2016/361 (Cy. 113).

en-gb	for the heading substitute “Infrastructure for electronic communications”;
cy-gb	yn lle’r pennawd rhodder “Infrastructure for electronic communications”;

en-gb	There are amending instruments in relation to paragraphs 7 and 8 of Schedule 1 but none are relevant to these Regulations.
cy-gb	Mae offerynnau diwygio mewn perthynas â pharagraffau 7 ac 8 o Atodlen 1 ond nid yw’r un ohonynt yn berthnasol i’r Rheoliadau hyn.

en-gb	Paragraph 10 of Schedule 1 was substituted by paragraph 83(8) of Schedule 5 to the 2022 Act.
cy-gb	Amnewidiwyd paragraff 10 o Atodlen 1 gan baragraff 83(8) o Atodlen 5 i Ddeddf 2022.

en-gb	The Welsh Ministers have consulted the Building Regulations Advisory Committee for Wales and any other person that the Welsh Ministers consider appropriate, in accordance with section 14(7) of the Building Act 1984( ).
cy-gb	Mae Gweinidogion Cymru wedi ymgynghori â Phwyllgor Cynghori Cymru ar Reoliadau Adeiladu ac ag unrhyw berson arall y mae Gweinidogion Cymru yn ystyried ei fod yn briodol, yn unol ag adran 14(7) o Ddeddf Adeiladu 1984( ).

en-gb	( ) Section 14(7) was amended by the 2009 Order, and by paragraph 17(3) of Schedule 5 to the 2022 Act.
cy-gb	( ) Diwygiwyd adran 14(7) gan Orchymyn 2009, a chan baragraff 17(3) o Atodlen 5 i Ddeddf 2022.

en-gb	Title, application and coming into force
cy-gb	Enwi, cymhwyso a dod i rym

en-gb	These Regulations apply in relation to Wales.
cy-gb	Mae’r Rheoliadau hyn yn gymwys o ran Cymru.

en-gb	These Regulations come into force on 1 July 2025.
cy-gb	Daw’r Rheoliadau hyn i rym ar 1 Gorffennaf 2025.

en-gb	Interpretation
cy-gb	Dehongli

en-gb	In these Regulations—
cy-gb	Yn y Rheoliadau hyn—

en-gb	( ) 2003 c. 21.
cy-gb	( ) 2003 p. 21.

en-gb	Section 65(2B) was inserted by section 1(4) of the Digital Economy Act 2017 (c. 30) and amended by S.I. 2020/1419.
cy-gb	Mewnosodwyd adran 65(2B) gan adran 1(4) o Ddeddf yr Economi Ddigidol 2017 (p. 30) ac fe’i diwygiwyd gan O.S. 2020/1419.

en-gb	In regulation 44C (interpretation of Part R of Schedule 1)( )—
cy-gb	Yn rheoliad 44C (dehongli Rhan R o Atodlen 1)( )—

en-gb	( ) Regulation 44C was inserted, in relation to buildings in Wales, by S.I. 2016/361 (W. 113).
cy-gb	( ) Mewnosodwyd rheoliad 44C, mewn perthynas ag adeiladau yng Nghymru, gan O.S. 2016/361 (Cy. 113).

en-gb	after the definition of “network termination point” insert—
cy-gb	ar ôl y diffiniad o “network termination point” mewnosoder—

en-gb	—  The amendments made by regulations 4 and 5 of these Regulations do not apply in relation to previously notified work if it—
cy-gb	—  Nid yw’r diwygiadau a wneir gan reoliadau 4 a 5 o’r Rheoliadau hyn yn gymwys mewn perthynas â gwaith yr hysbyswyd amdano yn flaenorol os yw—

en-gb	( ) Part R of Schedule 1 was inserted, in relation to buildings in Wales, by S.I. 2016/361 (W. 113).
cy-gb	( ) Mewnosodwyd Rhan R o Atodlen 1, mewn perthynas ag adeiladau yng Nghymru, gan O.S. 2016/361 (Cy. 113).

en-gb	has started before the day on which these Regulations come into force, or
cy-gb	wedi dechrau cyn y diwrnod y mae’r Rheoliadau hyn yn dod i rym, neu

en-gb	for the heading substitute “Infrastructure for electronic communications”;
cy-gb	yn lle’r pennawd rhodder “Infrastructure for electronic communications”;

en-gb	a building notice or an initial notice has been given to a local authority before the day on which these Regulations come into force, or
cy-gb	hysbysiad adeiladu neu hysbysiad cychwynnol wedi ei roi i awdurdod lleol cyn y diwrnod y mae’r Rheoliadau hyn yn dod i rym, neu

en-gb	full plans have been deposited with a local authority before that day.
cy-gb	planiau llawn wedi eu hadneuo gydag awdurdod lleol cyn y diwrnod hwnnw.

en-gb	Amendment to the Building Regulations
cy-gb	Diwygio’r Rheoliadau Adeiladu

en-gb	—  The Building Regulations are amended as follows.
cy-gb	—  Mae’r Rheoliadau Adeiladu wedi eu diwygio fel a ganlyn.

en-gb	In Part 9A( )—
cy-gb	Yn Rhan 9A( )—

en-gb	before regulation 44A insert—
cy-gb	o flaen rheoliad 44A mewnosoder—

en-gb	In regulation 4 (functions of approvers)—
cy-gb	Yn rheoliad 4 (swyddogaethau cymeradwywyr)—

en-gb	(xxx) regulation 44ZAA (particulars of connection to public electronic communications network), and .
cy-gb	(xxx) rheoliad 44ZAA (manylion cysylltiad â rhwydwaith cyfathrebu electronig cyhoeddus), a .

en-gb	in the heading, after “of”, in the first place where it occurs insert “Part 9A and of”;
cy-gb	yn y pennawd, ar ôl “of”, yn y lle cyntaf y mae’n digwydd mewnosoder “Part 9A and of”;

en-gb	in the opening words, after “In” insert “this Part and in”;
cy-gb	yn y geiriau agoriadol, ar ôl “In” mewnosoder “this Part and in”;

en-gb	in the definition of “access point”, after “infrastructure” insert “, or as the case requires the gigabit-ready physical infrastructure,”;
cy-gb	yn y diffiniad o “access point”, ar ôl “infrastructure” mewnosoder “, or as the case requires the gigabit-ready physical infrastructure,”;

en-gb	after the definition of “access point” insert—
cy-gb	ar ôl y diffiniad o “access point” mewnosoder—

en-gb	In Schedule 1 (requirements), in Part R (physical infrastructure for high-speed electronic communications networks( ))—
cy-gb	Yn Atodlen 1 (gofynion), yn Rhan R (seilwaith ffisegol ar gyfer rhwydweithiau cyfathrebu electronig cyflym( ))—

en-gb	before paragraph R1 insert—
cy-gb	o flaen paragraff R1 mewnosoder—

en-gb	in paragraph R1—
cy-gb	ym mharagraff R1—

en-gb	for the heading substitute “High-speed ready in-building physical infrastructure”;
cy-gb	yn lle’r pennawd rhodder “High-speed ready in-building physical infrastructure”;

en-gb	in the second column, after “work” insert “, other than building work to which paragraph RA1 applies,”.
cy-gb	yn yr ail golofn, ar ôl “work” mewnosoder “, other than building work to which paragraph RA1 applies,”.

en-gb	Amendment to the Approvers Regulations
cy-gb	Diwygio’r Rheoliadau Cymeradwywyr

en-gb	—  The Approvers Regulations are amended as follows.
cy-gb	—  Mae’r Rheoliadau Cymeradwywyr wedi eu diwygio fel a ganlyn.

en-gb	at the end of paragraph (2)(a)(xxviii) omit “and”, and
cy-gb	ar ddiwedd paragraff (2)(a)(xxviii), hepgorer “a”, a

en-gb	after paragraph (2)(a)(xxix) insert—
cy-gb	ar ôl paragraff (2)(a)(xxix) mewnosoder—

en-gb	In regulation 5(2) (modification of the 2010 Regulations etc.)—
cy-gb	Yn rheoliad 5(2) (addasu Rheoliadau 2010 etc.)—

en-gb	after the words “44 (commissioning)” replace “and” with “,”, and
cy-gb	ar ôl y geiriau “44 (comisiynu)” rhodder “,” yn lle “a”, a

en-gb	after the words “44ZA (commissioning in respect of a system for on-site electricity generation)” insert “and 44ZAA (particulars of connection to public electronic communications network)”.
cy-gb	ar ôl y geiriau “44ZA (comisiynu mewn cysylltiad â system ar gyfer cynhyrchu trydan ar y safle)” mewnosoder “a 44ZAA (manylion cysylltiad â rhwydwaith cyfathrebu electronig cyhoeddus)”.

en-gb	Name
cy-gb	Enw

en-gb	Cabinet Secretary for Economy, Energy and Planning, one of the Welsh Ministers
cy-gb	Ysgrifennydd y Cabinet dros y Economi, Ynni a Chynllunio, un o Weinidogion Cymru

en-gb	Date
cy-gb	Dyddiad