{"id":"8c4e387a-d221-4a24-9fd4-50bdaacbe273","first_published_at":"2025-11-27T09:30:00.000Z","published_revision":{"id":"23dcb529-9e8a-436e-a430-a1c952c7a102","revision_index":5,"previous_revision_id":"896053e9-ce42-4115-9b03-a2499c58c835","created_at":"2026-02-06T12:19:15.816Z","updated_at":"2026-02-06T12:22:00.573Z","approved_at":"2026-02-06T12:22:00.568Z","publish_at":"2026-02-06T13:00:00.000Z","metadata":[{"language":"cy-GB","title":"Data dangosyddion Mynegai Amddifadedd Lluosog Cymru (MALlC) 2025 fesul Ardal Gynnyrch Ehangach Haen Is (AGEHI) ac awdurdod lleol: maes tai","summary":"Mynegai Amddifadedd Lluosog Cymru (MALlC) yw'r mesur swyddogol o amddifadedd cymharol ar gyfer ardaloedd bach yng Nghymru. Mae’n pennu safle pob un o'r 1,917 o Ardaloedd Cynnyrch Ehangach Haen Is (ACEHIau) o'r mwyaf (safle 1) i'r lleiaf (safle 1,917) difreintiedig. Mae'n cyfuno 54 o ddangosyddion wedi'u grwpio o dan 8 maes sydd â'r pwysau canlynol yn y mynegai cyffredinol: Incwm (22%), Cyflogaeth (20%), Iechyd (15%), Addysg (14%), Mynediad at Wasanaethau (10%), Tai (9%), Diogelwch Cymunedol (5%), a'r Amgylchedd Ffisegol (5%). \n\nMae MALlC yn cynhyrchu safleoedd maes a mynegai cyffredinol i nodi ardaloedd gyda'r crynodiadau uchaf o sawl math o amddifadedd. Mae'r rhan fwyaf o'r gwerthoedd dangosydd, rhai gwerthoedd is-ddangosydd a rhai safleoedd is-faes hefyd yn cael eu cyhoeddi ar StatsCymru. Gweler yr [adroddiad canllawiau ac adroddiad technegol MALlC]( https://www.llyw.cymru/mynegai-amddifadedd-lluosog-cymru-2025-cyfres) am ragor o wybodaeth.\n\nMae'r tabl hwn yn cynnwys data ar gyfer y 4 dangosydd sy'n ffurfio'r maes tai, a 6 is-ddangosydd. Mae'r holl ddangosyddion yn cael eu talgrynnu i un lle degol ar wahân i ddau sy'n cael eu talgrynnu i ddau le degol: yr anallu i fforddio mynd i mewn i feddiannaeth perchennog neu'r farchnad rhentu breifat, ac effeithlonrwydd ynni. \n\nMae amcangyfrifon dangosyddion awdurdodau lleol wedi'u cynhyrchu lle mae'r data gwreiddiol yn caniatáu i’w hagregu i ddaearyddiaethau uwchben lefel ACEHI. Lle nad yw hyn yn bosibl ar gyfer dangosydd penodol, bydd cofnodion data awdurdod lleol yn dangos [x] yn y golofn Data.","collection":"Yn gysyniadol, diben y maes tai yw nodi tai annigonol, o ran cyflwr ffisegol, amodau byw ac argaeledd. Yma, mae amodau byw yn golygu addasrwydd y tai ar gyfer y sawl sy'n byw ynddynt, er enghraifft o ran iechyd a diogelwch, ac addasiadau angenrheidiol. \n\nMae'r maes tai yn cynnwys dangosyddion o:\n* canran yr aelwydydd wedi'u gorlenwi ar y mesur ystafelloedd gwely (SYG) yn seiliedig ar Gyfrifiad 2021\n* sgôr yr anallu i fforddio ymuno â’r farchnad i berchen-feddianwyr neu’r farchnad rhentu preifat, lle mae gwerthoedd negyddol yn fwy difreintiedig (yn llai abl fforddio), 2023 (ffynonellau amrywiol, Prifysgol Heriot-Watt)\n* canran yr eiddo preswyl sy'n cael eu dosbarthu fel tai o ansawdd gwael (sy'n golygu bod mewn cyflwr gwael neu'n cynnwys peryglon difrifol), 2023 (ffynonellau amrywiol, BRE)\n* effeithlonrwydd ynni eiddo preswyl (sgôr cyfartalog y Weithdrefn Asesu Safonol), 2012 i 2024 (MHCLG) – nodwch fod gwerthoedd uwch yn llai difreintiedig ar gyfer y dangosydd hwn\n\nMae pedwar is-ddangosydd o anallu ymuno â’r farchnad i berchen-feddianwyr neu’r farchnad rhentu preifat:\n* canran yr aelwydydd, lle mae pennaeth yr aelwyd o dan 40 oed, sydd methu fforddio dechrau meddiannaeth perchennog, 2023 (ffynonellau amrywiol, Prifysgol Heriot-Watt)\n* canran yr aelwydydd, lle mae pennaeth yr aelwyd o dan 40 oed, sydd methu fforddio ymuno â’r farchnad rhentu breifat, 2023 (ffynonellau amrywiol, Prifysgol Heriot-Watt)\n* canran yr aelwydydd rhentwyr preifat, lle mae pennaeth yr aelwyd rhwng 40 a 65 oed, sydd methu fforddio dechrau meddiannaeth perchennog, 2023 (ffynonellau amrywiol, Prifysgol Heriot-Watt)\n* canran yr aelwydydd rhentwr preifat, lle mae'r pennaeth cartref rhwng 40 a 65 oed, sydd methu fforddio ymuno â’r farchnad rhentu breifat, 2023 (ffynonellau amrywiol, Prifysgol Heriot-Watt)\n\nMae dau is-ddangosydd o ansawdd tai gwael:\n* canran yr eiddo preswyl mewn cyflwr gwael, 2023 (ffynonellau amrywiol, BRE)\n* canran yr eiddo preswyl sy'n cynnwys peryglon difrifol, 2023 (ffynonellau amrywiol, BRE)","quality":"Mae data MALlC 2025 wedi'u cynhyrchu gan ystadegwyr proffesiynol gan ddefnyddio'r data diweddaraf, dulliau dadansoddol trylwyr, a dilysu annibynnol ar bob cam. Mae MALlC 2025 yn adeiladu ar fersiynau blaenorol i sicrhau cywirdeb a dibynadwyedd, gan gyfuno 54 o ddangosyddion o ffynonellau amrywiol (mae rhai, ond nid pob un ohonynt, yn seiliedig ar ffynonellau ystadegau swyddogol) i leihau rhagfarn a chryfhau cadernid. Roedd sicrhau ansawdd yn cynnwys gwiriadau lluosog, atgynhyrchu canlyniadau, ac adolygiad arbenigol gydag arbenigwyr maes ac awdurdodau lleol.\n\nMae'r dangosyddion tai yn cynnwys: \n* un dangosydd yn seiliedig ar gyfrifiad, ar orlenwi \n* 8 dangosydd wedi’u modelu - sy'n ymwneud ag ansawdd a fforddiadwyedd - sy'n defnyddio ystod o ffynonellau swyddogol yn bennaf (arolygon, cyfrifiad a gweinyddol) ond rhai ffynonellau answyddogol i’w cyfrifo\n* un dangosydd effeithlonrwydd ynni yn seiliedig ar ffynhonnell swyddogol ond gyda phriodoliad (ar gyfer 44% o eiddo ar gyfartaledd)","rounding_description":"Mae pob dangosydd yn y maes tai hwn wedi'i dalgrynnu i 1 lle degol ac eithrio'r 'Aelwydydd sy'n methu fforddio mynd i mewn i berchenogaeth neu'r farchnad rhentu preifat' sy'n cael ei dalgrynnu i 2 le degol.","reason":"Newidiadau fformatio bach"},{"language":"en-GB","title":"Welsh Index of Multiple Deprivation (WIMD) 2025 indicator data by Lower layer Super Output Area (LSOA) and local authority: housing domain","summary":"The Welsh Index of Multiple Deprivation (WIMD) is the official measure of relative deprivation for small areas in Wales, ranking all 1,917 Lower Layer Super Output Areas from most (rank 1) to least (rank 1,917) deprived. It combines 54 indicators grouped under 8 domains which have the following weights in the overall index: Income (22%), Employment (20%), Health (15%), Education (14%), Access to Services (10%), Housing (9%), Community Safety (5%), and Physical Environment (5%).\n\nWIMD produces domain ranks and an overall index to identify areas with the highest concentrations of multiple types of deprivation. Most of the indicator values, some sub-indicator values and some sub-domain ranks are also published on StatsWales. Please see the [WIMD guidance report and technical report]( https://www.gov.wales/welsh-index-multiple-deprivation-2025-series#Backgroundinformation) for more information.\n\nThis table contains data for the 4 indicators that form the housing domain, and 6 sub-indicators. All indicators are rounded to one decimal place apart from two that are rounded to two decimal places: households unable to afford to enter owner occupation or the private rental market, and energy efficiency.\n\nLocal authority indicator estimates have been produced where the original data allows for aggregating to geographies above LSOA level. Where this is not possible for a given indicator, local authority data entries will display [x] in the Data column.","collection":"Conceptually, the purpose of the housing domain is to identify inadequate housing, in terms of physical and living conditions and availability. Here, living condition means the suitability of the housing for its inhabitant(s), for example in terms of health and safety, and necessary adaptations.\r\n\r\nThe housing domain contains indicators of:\r\n* the percentage of households that are overcrowded on the Census 2021 based bedroom measure (ONS)\r\n* a score of households unable to afford to enter owner occupation or the private rental market, where negative values are more deprived (less able to afford), 2023 (various sources, University of Heriot-Watt)\r\n* the percentage of residential properties classed as poor quality housing (which means being in disrepair or containing serious hazards), 2023 (various sources, BRE)\r\n* energy efficiency of residential properties (average Standard Assessment Procedure score), 2012 to 2024 (MHCLG) – note that higher values are less deprived for this indicator\r\n\r\nThere are four sub-indicators of inability to afford to enter owner occupation or the private rental market:\r\n* the percentage of households where the head of household is aged under 40 unable to afford to enter owner occupation, 2023 (various sources, University of Heriot-Watt)\r\n* the percentage of households where the head of household is aged under 40 unable to afford to enter the private rental market, 2023 (various sources, University of Heriot-Watt)\r\n* the percentage of private renter households where the head of household is aged 40 to 65 unable to afford to enter owner occupation, 2023 (various sources, University of Heriot-Watt)\r\n* the percentage of private renter households where the head of household is aged 40 to 65 unable to afford to enter the private rental market, 2023 (various sources, University of Heriot-Watt)\r\n\r\nThere are two sub-indicators of poor housing quality:\r\n* the percentage of residential properties in disrepair, 2023 (various sources, BRE)\r\n* the percentage of residential properties containing serious hazards, 2023 (various sources, BRE)\r\n","quality":"The WIMD 2025 data have been produced by professional statisticians using the latest data, rigorous analytical methods, and independent validation at every stage. WIMD 2025 builds on previous versions to ensure accuracy and reliability, combining 54 indicators from diverse sources (some but not all are based on official statistics sources) to minimize bias and strengthen robustness. Quality assurance included multiple checks, replication of results, and expert review with domain specialists and local authorities.\r\n\r\nThe housing indicators comprise: \r\n* one census based indicator on overcrowding \r\n* 8 modelled indicators relating to quality and affordability, which draw on a range of mainly official (survey, census and administrative) but some non-official sources in their calculation\r\n* one indicator of energy efficiency based on an official source but with imputation (for on average 44% of properties)\r\n","rounding_description":"All indicators in this domain are rounded to 1 decimal place except for the ‘Households unable to afford to enter owner occupation or the private rental market’ which is rounded to 2 decimal places.","reason":"Minor formatting changes\r\n"}],"rounding_applied":true,"update_frequency":{"update_type":"none"},"designation":"accredited","related_links":[{"id":"YCxqK","url":"https://www.gov.wales/welsh-index-multiple-deprivation-2025-series","created_at":"2025-11-26T17:02:27.939Z","label_en":"Welsh Index of Multiple Deprivation 2025","label_cy":"Mynegai Amddifadedd Lluosog Cymru 2025"},{"id":"h9VtM","url":"https://www.llyw.cymru/mynegai-amddifadedd-lluosog-cymru-2025-cyfres","created_at":"2025-11-26T17:03:11.099Z","label_en":"Mynegai Amddifadedd Lluosog Cymru 2025","label_cy":"Welsh Index of Multiple Deprivation 2025"}],"providers":[{"id":"2eb364d4-24a8-47c8-84ee-550bd2374a89","group_id":"ffc0970c-5773-4e87-91cd-67245e5151d0","revision_id":"23dcb529-9e8a-436e-a430-a1c952c7a102","language":"en-gb","provider_id":"d3620b5d-be93-44f7-9289-fe3bf50e78f3","provider_name":"Office for National Statistics (ONS)","source_id":"e21e3dbb-5e43-4a19-810a-4cd69d433aa9","source_name":"2021 Census","created_at":"2026-02-06T12:19:15.816Z"},{"id":"b1716350-dcb4-4856-befb-40d85bc55042","group_id":"ffc0970c-5773-4e87-91cd-67245e5151d0","revision_id":"23dcb529-9e8a-436e-a430-a1c952c7a102","language":"cy-gb","provider_id":"d3620b5d-be93-44f7-9289-fe3bf50e78f3","provider_name":"Y Swyddfa Ystadegau Gwladol (y SYG)","source_id":"e21e3dbb-5e43-4a19-810a-4cd69d433aa9","source_name":"Cyfrifiad 2021","created_at":"2026-02-06T12:19:15.816Z"}],"topics":[{"id":86,"path":"86","name_en":"Poverty","name_cy":"Tlodi"},{"id":88,"path":"86.88","name_en":"Deprivation","name_cy":"Amddifadedd"}]},"publisher":{"group":{"id":"e50c0a08-0474-4cc3-b8a1-eea48a0046b5","name":"Social Justice","email":"statsinclusion@gov.wales"},"organisation":{"id":"4ef4facf-c488-4837-a65b-e66d4b525965","name":"Welsh Government"}}}