Areas/Postcode districts/LL56
Postcode district
LL56
875 domestic properties carry a LL56 postcode, all within Gwynedd.
875properties matched to a UPRN
57%rated D or below on their current EPC
Cmost common current energy band
1local authority
Energy performance
Where the stock sits today
LL56's current EPC mix, read directly from the certificates.
A 0%
B 9%
C 34%
D 34%
E 16%
F 5%
G 2%
Distance from standard
63.3→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
875
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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109properties in flood zone 2 or 3
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13properties in a designated conservation area
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875properties 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)
7%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.
LL56 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 LL56 →UPRN 100023...EPC D → C
UPRN 100023...Flood zone 1
UPRN 100023...Conservation area
UPRN 100023...EPC E → D
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Other LL postcode districts
67 published