Ward · part of Gwynedd
Yr Eifl
555 domestic properties in Yr Eifl are matched to a UPRN in CrierData. The figures below are this ward's own numbers, not a share of its local authority's — every tier on this site is counted independently from the same source data.
555properties matched to a UPRN
83%rated D or below on their current EPC
Emost common current energy band
Energy performance
Where the stock sits today
Yr Eifl's current EPC mix, read directly from the certificates — 83% of properties sit at band D or lower today.
A 0%
B 10%
C 7%
D 21%
E 32%
F 20%
G 9%
Distance from standard
48.4→80.5
Average current efficiency score against average potential score, on the certificate's own SAP scale. The gap is what a certificate's own recommendations are already aimed at closing — a reading of the certificates as issued, not a projection.
Properties matched
555
Matched to a UPRN in the current release, out of a national total of 19,274,677.
Flood, heritage & conservation
Constraints on the ground
Three separate checks, kept separate on purpose — a property can sit in more than one at once.
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35properties in flood zone 2 or 3
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110properties in a designated conservation area
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555properties within roughly 2.2km of a listed building
A proximity signal, not a listed-status check — this counts nearby listed buildings, not properties confirmed to be listed themselves.
Deprivation & fuel poverty
Neighbourhood context, Wales-wide
The Welsh Index of Multiple Deprivation ranks every small area in Wales nationally, from 1 (most deprived) to 10 (least) — not directly comparable to England's own index, which uses different domains and weights.
23.0%households in fuel poverty (WHCS 2017-18 estimate)
15%of homes are social rented (Census 2021)
This is Gwynedd's own local-authority figure, inherited — the source data (2017-18) has no finer grain than a whole council area, so every property in Gwynedd reads the same number.
Yr Eifl doesn't have its own articles, but we've written an article covering Gwynedd.Read about Gwynedd →
This is the aggregate picture. Every property behind it has its own record.
Certificate history, exact flood zone, planning constraints, deprivation and tenure — matched to the UPRN and searchable one property at a time inside CrierData.
Search properties in Yr Eifl →UPRN 100023...EPC D → C
UPRN 100023...Flood zone 1
UPRN 100023...Conservation area
UPRN 100023...EPC E → D
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