<Legislation xmlns="http://www.legislation.gov.uk/namespaces/legislation" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" DocumentURI="http://www.legislation.gov.uk/asc/2026/5/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5" NumberOfProvisions="201" xsi:schemaLocation="http://www.legislation.gov.uk/namespaces/legislation http://www.legislation.gov.uk/schema/legislation.xsd" SchemaVersion="2.0" xml:lang="cy" TerritorialApplication="W" RestrictExtent="E+W" RestrictStartDate="2026-04-28"><ukm:Metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dct="http://purl.org/dc/terms/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:ukm="http://www.legislation.gov.uk/namespaces/metadata">
					<dc:identifier>http://www.legislation.gov.uk/asc/2026/5/section/64/welsh</dc:identifier><dc:title>Deddf Diogelwch Adeiladau (Cymru) 2026</dc:title><dc:language>cy</dc:language><dc:publisher>Statute Law Database</dc:publisher><dc:modified>2026-06-25</dc:modified><dc:contributor>Expert Participation</dc:contributor><dct:valid>2026-04-28</dct:valid>
					
					<atom:link rel="self" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.xml" type="application/xml"/><atom:link rel="http://www.legislation.gov.uk/def/navigation/resources" href="http://www.legislation.gov.uk/asc/2026/5/resources/welsh" title="More Resources"/>
					
					<atom:link rel="http://www.legislation.gov.uk/def/navigation/notes" href="http://www.legislation.gov.uk/id/asc/2026/5/section/64/notes/welsh" title="Explanatory Notes"/><atom:link rel="http://www.legislation.gov.uk/def/navigation/notes/toc" href="http://www.legislation.gov.uk/asc/2026/5/notes/contents/welsh" title="Explanatory Notes Table of Contents"/>
					
					<atom:link rel="http://www.legislation.gov.uk/def/navigation/act" href="http://www.legislation.gov.uk/asc/2026/5/welsh" title="whole act"/><atom:link rel="http://www.legislation.gov.uk/def/navigation/introduction" href="http://www.legislation.gov.uk/asc/2026/5/introduction/welsh" title="introduction"/>
					<atom:link rel="http://www.legislation.gov.uk/def/navigation/body" href="http://www.legislation.gov.uk/asc/2026/5/body/welsh" title="body"/>
					<atom:link rel="http://www.legislation.gov.uk/def/navigation/schedules" href="http://www.legislation.gov.uk/asc/2026/5/schedules/welsh" title="schedules"/>
					
										
					
					
					<atom:link rel="alternate" hreflang="en" href="http://www.legislation.gov.uk/asc/2026/5/section/64"/><atom:link rel="http://purl.org/dc/terms/tableOfContents" hreflang="en" href="http://www.legislation.gov.uk/asc/2026/5/contents" title="Table of Contents"/>
					<atom:link rel="alternate" type="application/rdf+xml" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.rdf" title="RDF/XML"/><atom:link rel="alternate" type="application/akn+xml" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.akn" title="AKN"/><atom:link rel="alternate" type="application/xhtml+xml" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.xht" title="HTML snippet"/><atom:link rel="alternate" type="text/html" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.htm" title="Website (XHTML) Default View"/><atom:link rel="alternate" type="text/csv" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.csv" title="CSV"/><atom:link rel="alternate" type="application/pdf" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.pdf" title="PDF"/>
					<atom:link rel="alternate" type="application/akn+xhtml" href="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh/data.html" title="HTML5 snippet"/>

					
					<atom:link rel="http://purl.org/dc/terms/tableOfContents" hreflang="cy" href="http://www.legislation.gov.uk/asc/2026/5/contents/welsh" title="Table of Contents"/>
					
					<atom:link rel="http://purl.org/dc/terms/hasVersion" href="http://www.legislation.gov.uk/asc/2026/5/section/64/enacted/welsh" title="enacted" hreflang="cy"/><atom:link rel="http://purl.org/dc/terms/hasVersion" href="http://www.legislation.gov.uk/asc/2026/5/section/64/enacted" title="enacted" hreflang="en"/>
					
					<atom:link rel="up" href="http://www.legislation.gov.uk/asc/2026/5/welsh" title="Entire legislation"/><atom:link rel="prev" href="http://www.legislation.gov.uk/asc/2026/5/section/63/welsh" title="Provision; Section 63"/><atom:link rel="prevInForce" href="http://www.legislation.gov.uk/asc/2026/5/section/17/welsh" title="Provision; Section 17"/><atom:link rel="next" href="http://www.legislation.gov.uk/asc/2026/5/section/65/welsh" title="Provision; Section 65"/><atom:link rel="nextInForce" href="http://www.legislation.gov.uk/asc/2026/5/section/133/welsh" title="Provision; Section 133"/>
					<ukm:PrimaryMetadata><ukm:DocumentClassification><ukm:DocumentCategory Value="primary"/><ukm:DocumentMainType Value="WelshParliamentAct"/><ukm:DocumentStatus Value="revised"/></ukm:DocumentClassification><ukm:Year Value="2026"/><ukm:Number Value="5"/><ukm:EnactmentDate Date="2026-04-27"/><ukm:ISBN Value="9780348114010"/><ukm:UnappliedEffects><ukm:UnappliedEffect RequiresWelshApplied="true" EffectId="key-f196348216f19209c96aa3b02d0cb7b5" Type="coming into force" RequiresApplied="true" Modified="2026-06-25T12:30:20Z" AffectingYear="2026" AffectedYear="2026" AffectedClass="WelshParliamentAct" AffectedProvisions="s. 64" AffectingClass="WelshParliamentAct" AffectingURI="http://www.legislation.gov.uk/id/asc/2026/5" AffectedExtent="E+W" URI="http://www.legislation.gov.uk/id/effect/key-f196348216f19209c96aa3b02d0cb7b5" Row="68" AffectedNumber="5" AffectedTerritorialApplication="W" AffectingNumber="5" AffectingProvisions="s. 138(2)" AffectedURI="http://www.legislation.gov.uk/id/asc/2026/5"><ukm:AffectedTitle>Building Safety (Wales) Act 2026</ukm:AffectedTitle><ukm:AffectedTitle xml:lang="cy">Deddf Diogelwch Adeiladau (Cymru) 2026</ukm:AffectedTitle><ukm:AffectedProvisions><ukm:Section Ref="section-64" URI="http://www.legislation.gov.uk/id/asc/2026/5/section/64">s. 64</ukm:Section></ukm:AffectedProvisions><ukm:AffectingTitle>Building Safety (Wales) Act 2026</ukm:AffectingTitle><ukm:AffectingTitle xml:lang="cy">Deddf Diogelwch Adeiladau (Cymru) 2026</ukm:AffectingTitle><ukm:AffectingProvisions><ukm:Section Ref="section-138-2" URI="http://www.legislation.gov.uk/id/asc/2026/5/section/138/2">s. 138(2)</ukm:Section></ukm:AffectingProvisions><ukm:InForceDates><ukm:InForce Applied="false" WelshApplied="false" Prospective="true" Qualification=""/></ukm:InForceDates></ukm:UnappliedEffect></ukm:UnappliedEffects></ukm:PrimaryMetadata>
					

                    
									<ukm:Notes><ukm:Note IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/notes" DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/notes/welsh"/><ukm:Alternatives><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_we.pdf" Date="2026-05-22" Title="Explanatory Note" TitleWelsh="Nodiadau Esboniadol - Welsh" Size="2726839" Language="Welsh"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_mi.pdf" Date="2026-05-22" Title="Explanatory Note - Mixed Language" TitleWelsh="Explanatory Note - Mixed Language" Size="4566700" Language="Mixed"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/ascen_20260005_en.pdf" Date="2026-05-22" Title="Explanatory Note - English" Size="3600739"/></ukm:Alternatives>       
								</ukm:Notes> 
					<ukm:Alternatives><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_we.pdf" Date="2026-05-15" Size="3365606" Language="Welsh" Print="false"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_en.pdf" Date="2026-05-15" Size="4156974" Print="false"/><ukm:Alternative URI="http://www.legislation.gov.uk/asc/2026/5/pdfs/asc_20260005_mi.pdf" Date="2026-05-15" Size="5567976" Language="Mixed" Print="true"/></ukm:Alternatives>
					
					<ukm:Statistics>
									<ukm:TotalParagraphs Value="201"/>
									<ukm:BodyParagraphs Value="156"/>
									<ukm:ScheduleParagraphs Value="45"/>
									<ukm:AttachmentParagraphs Value="0"/>
									<ukm:TotalImages Value="0"/>
								</ukm:Statistics>
				</ukm:Metadata><Primary><Body DocumentURI="http://www.legislation.gov.uk/asc/2026/5/body/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/body" NumberOfProvisions="156" NumberFormat="default" TerritorialApplication="W" RestrictExtent="E+W" RestrictStartDate="2026-04-28"><Part DocumentURI="http://www.legislation.gov.uk/asc/2026/5/part/1/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/part/1" NumberOfProvisions="90" id="part-1" TerritorialApplication="W" RestrictExtent="E+W" RestrictStartDate="2026-04-28"><Number>RHAN 1</Number><Title>DIOGELWCH ADEILADAU SY’N CYNNWYS DWY NEU RAGOR O UNEDAU PRESWYL</Title><Chapter DocumentURI="http://www.legislation.gov.uk/asc/2026/5/part/1/chapter/9/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/part/1/chapter/9" NumberOfProvisions="4" id="part-1-chapter-9" TerritorialApplication="W" RestrictExtent="E+W" Match="false" Status="Prospective"><Number>PENNOD 9</Number><Title>ADOLYGIADAU AC APELAU</Title><P1group Match="false" Status="Prospective" ConfersPower="true" RestrictExtent="E+W" TerritorialApplication="W"><Title>Adolygiad o benderfyniad adolygadwy</Title><P1 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64" id="section-64">
<Pnumber PuncAfter=""><CommentaryRef Ref="key-1d47eca61f115162b0eae8a4658e249d"/>64</Pnumber>
<P1para>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/1/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/1" id="section-64-1">
<Pnumber>1</Pnumber>
<P2para>
<Text>Caiff person yr effeithir arno ofyn am adolygiad o benderfyniad adolygadwy drwy roi hysbysiad i’r awdurdod diogelwch adeiladau a wnaeth y penderfyniad yn unol â rheoliadau a wneir o dan is-adran (2).</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/2/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/2" id="section-64-2">
<Pnumber>2</Pnumber>
<P2para>
<Text>Rhaid i Weinidogion Cymru, drwy reoliadau, wneud darpariaeth ynghylch—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/2/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/2/a" id="section-64-2-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>sut y mae rhaid rhoi hysbysiad o gais am adolygiad;</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/2/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/2/b" id="section-64-2-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>ffurf a chynnwys hysbysiad;‍</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/2/c/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/2/c" id="section-64-2-c">
<Pnumber>c</Pnumber>
<P3para>
<Text>y dyddiad cau ar gyfer rhoi hysbysiad.</Text>
</P3para>
</P3>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/3/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/3" id="section-64-3">
<Pnumber>3</Pnumber>
<P2para>
<Text>Caiff rheoliadau o dan is-adran (2) wneud darpariaeth—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/3/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/3/a" id="section-64-3-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>ynghylch y dogfennau (os oes rhai) y mae rhaid eu cynnwys gyda hysbysiad;</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/3/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/3/b" id="section-64-3-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>i’r awdurdod diogelwch adeiladau estyn y dyddiad cau ar gyfer rhoi hysbysiad.</Text>
</P3para>
</P3>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/4/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/4" id="section-64-4">
<Pnumber>4</Pnumber>
<P2para>
<Text>Rhaid i awdurdod diogelwch adeiladau adolygu penderfyniad pan ofynnir iddo wneud hynny.</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/5/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/5" id="section-64-5">
<Pnumber>5</Pnumber>
<P2para>
<Text>Mae natur a chwmpas yr adolygiad i fod fel ag y maent yn ymddangos yn briodol i’r awdurdod o dan yr amgylchiadau.</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/6/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/6" id="section-64-6">
<Pnumber>6</Pnumber>
<P2para>
<Text>Rhaid i’r adolygiad ystyried unrhyw sylwadau a wneir, neu wybodaeth neu ddogfen a roddir, gan y person yr effeithir arno ar gam sy’n rhoi cyfle rhesymol i’r awdurdod eu hystyried (a chaiff ystyried unrhyw wybodaeth neu ddogfen arall).</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/7/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/7" id="section-64-7">
<Pnumber>7</Pnumber>
<P2para>
<Text>Ar ôl i’r adolygiad ddod i ben, rhaid i’r awdurdod—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/7/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/7/a" id="section-64-7-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>cadarnhau’r penderfyniad,</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/7/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/7/b" id="section-64-7-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>amrywio’r penderfyniad, neu</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/7/c/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/7/c" id="section-64-7-c">
<Pnumber>c</Pnumber>
<P3para>
<Text>canslo’r penderfyniad.</Text>
</P3para>
</P3>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/8/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/8" id="section-64-8">
<Pnumber>8</Pnumber>
<P2para>
<Text>Rhaid i’r awdurdod, cyn diwedd y cyfnod perthnasol, roi i’r‍ holl bersonau yr effeithir arnynt hysbysiad am ganlyniad yr adolygiad.</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/9/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/9" id="section-64-9">
<Pnumber>9</Pnumber>
<P2para>
<Text>Rhaid i’r hysbysiad gynnwys—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/9/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/9/a" id="section-64-9-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>y rhesymau dros ganlyniad yr adolygiad, a</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/9/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/9/b" id="section-64-9-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>gwybodaeth am yr hawl i apelio o dan adran 65.</Text>
</P3para>
</P3>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/10/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/10" id="section-64-10">
<Pnumber>10</Pnumber>
<P2para>
<Text>Os yw’r awdurdod yn meth‍u, cyn diwedd y cyfnod perthnasol, â rhoi hysbysiad am ganlyniad yr adolygiad o dan is-adran (7) i’r person yr effeithir arno a ofynnodd am yr adolygiad—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/10/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/10/a" id="section-64-10-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>trinnir yr adolygiad fel pe bai wedi dod i ben ar ddiwedd y cyfnod perthnasol, a thrinnir yr awdurdod fel pe bai wedi cadarnhau’r penderfyniad, a</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/10/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/10/b" id="section-64-10-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>rhaid i’r awdurdod, cyn gynted ag y bo’n rhesymol ymarferol ar ôl diwedd y cyfnod hwnnw, roi hysbysiad i’r‍ holl bersonau yr effeithir arnynt o’r ffaith honno.</Text>
</P3para>
</P3>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/11/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/11" id="section-64-11">
<Pnumber>11</Pnumber>
<P2para>
<Text>Rhaid i’r hysbysiad a roddir o dan is-adran (10)(b) gynnwys gwybodaeth am yr hawl i apelio o dan adran 65.</Text>
</P2para>
</P2>
<P2 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/12/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/12" id="section-64-12">
<Pnumber>12</Pnumber>
<P2para>
<Text>Yn is-adrannau (8) a (10), ystyr “cyfnod perthnasol” yw—</Text>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/12/a/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/12/a" id="section-64-12-a">
<Pnumber>a</Pnumber>
<P3para>
<Text>y cyfnod a bennir mewn rheoliadau a wneir gan Weinidogion Cymru, neu</Text>
</P3para>
</P3>
<P3 DocumentURI="http://www.legislation.gov.uk/asc/2026/5/section/64/12/b/welsh" IdURI="http://www.legislation.gov.uk/id/asc/2026/5/section/64/12/b" id="section-64-12-b">
<Pnumber>b</Pnumber>
<P3para>
<Text>cyfnod arall o’r fath y cytunir arno yn ysgrifenedig rhwng yr awdurdod a’r person yr effeithir arno a ofynnodd am yr adolygiad.</Text>
</P3para>
</P3>
</P2para>
</P2>
</P1para>
</P1></P1group></Chapter></Part></Body></Primary><Commentaries><Commentary Type="I" id="key-1d47eca61f115162b0eae8a4658e249d"><Para><Text>A. 64  ddim mewn grym ar y Cydsyniad Brenhinol, gweler <CitationSubRef id="nb221971a4df35d10" SectionRef="section-138-2" URI="http://www.legislation.gov.uk/id/asc/2026/5/section/138/2" Operative="true">a. 138(2)</CitationSubRef></Text></Para></Commentary></Commentaries></Legislation>