Areas/Postcode districts/CF15
Postcode district
CF15
5,217 domestic properties carry a CF15 postcode. Postcode districts don't line up with council boundaries — CF15 spans Cardiff, Rhondda Cynon Taf and Caerphilly, and this page counts all of them honestly rather than filing it under one authority.
Cardiff 79%
Rhondda Cynon Taf 21%
Caerphilly 0%
5,217properties matched to a UPRN
45%rated D or below on their current EPC
Cmost common current energy band
3local authorities represented here
Energy performance
Where the stock sits today
CF15's current EPC mix, read directly from the certificates. Cardiff and the other authorities here have different profiles — the figures below are this district's blended total across all of them, not any single authority's own number.
A 0%
B 16%
C 39%
D 35%
E 8%
F 1%
G 0%
Distance from standard
68.6→82.2
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
5,217
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. Cardiff and the other authorities here have different profiles — the figures below are this district's blended total across all of them, not any single authority's own number.
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351properties in flood zone 2 or 3
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183properties in a designated conservation area
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5,217properties 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.
9.4%households in fuel poverty (WHCS 2017-18 estimate)
9%of homes are social rented (Census 2021)
This is Cardiff's own local-authority figure, inherited — the source data (2017-18) has no finer grain than a whole council area, so every property in Cardiff reads the same number.
CF15 doesn't have its own articles, but we've written an article covering Cardiff.Read about Cardiff →
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 CF15 →UPRN 100023...EPC D → C
UPRN 100023...Flood zone 1
UPRN 100023...Conservation area
UPRN 100023...EPC E → D
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Other CF postcode districts
35 published