Postcode district
CF40
6,301 domestic properties carry a CF40 postcode, all within Rhondda Cynon Taf.
6,301properties matched to a UPRN
69%rated D or below on their current EPC
Dmost common current energy band
1local authority
Energy performance
Where the stock sits today
CF40's current EPC mix, read directly from the certificates.
A 1%
B 4%
C 26%
D 48%
E 18%
F 3%
G 1%
Distance from standard
62.2→81.5
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
6,301
Matched to a UPRN in the current release, out of a national total of 19,966,636.
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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217properties in flood zone 2 or 3
▦
0properties in a designated conservation area
⌂
6,301properties 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.
1
2
3
4
5
6
7
8
9
10
Share of properties whose neighbourhood falls in each national WIMD decile.
11.0%households in fuel poverty (WHCS 2017-18 estimate)
11%of homes are social rented (Census 2021)
This is Rhondda Cynon Taf's own local-authority figure, inherited — the source data (2017-18) has no finer grain than a whole council area, so every property in Rhondda Cynon Taf reads the same number.