Local authority · Wales
Cardiff
120,970 domestic properties in Cardiff are matched to a UPRN in CrierData and checked against six national registers — energy performance, flood zone, heritage constraints, deprivation, and housing tenure. Every figure below is a real count from the current release, not an estimate.
120,970properties matched to a UPRN
45%rated D or below on their current EPC
Cmost common current energy band
28wards, all with published pages
Energy performance
Where the stock sits today
Cardiff's housing stock, read from its current certificates: 45% of properties sit at band D or lower today. That is a starting point, not a verdict — most of that stock also has a documented route to a higher band, tracked property by property inside the full product.
A 1%
B 13%
C 41%
D 36%
E 8%
F 1%
G 0%
Distance from standard
68.6→81.3
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
120,970
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.
〜
36,137properties in flood zone 2 or 3
▦
5,614properties in a designated conservation area
⌂
120,970properties 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.
9.0%households in fuel poverty (WHCS 2017-18 estimate)
18%of homes are social rented (Census 2021)
Related reading
More on 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 Cardiff →UPRN 100023...EPC D → C
UPRN 100023...Flood zone 1
UPRN 100023...Conservation area
UPRN 100023...EPC E → D
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Wards in Cardiff
28 published
Postcode districts in Cardiff
8 linked