Local authority diagnosis
Neath Port Talbot
In Neath Port Talbot, 21,226 rated homes sit below EPC band C. That puts the area at #117 for the widest gap among local authority areas in England & Wales.
Direction of travel
On current pace, reaches band C by 2069
Projection from the 15-year rated-stock trend; not a forecast.
Retrofit gap
51.6%
of 41,107 rated domestic dwellings are below band C.
EPC Open Data · Open Government Licence · free to cite with attribution.
Homes below band C
21,226
League rank
#117
1 = widest gap.
Cost to reach band C
Is the gap closing?
The latest position for Neath Port Talbot, set against the recent direction of travel.
Fig.1Retrofit gap over time
Stock · year-endShare of Neath Port Talbot's rated dwellings below band C at each year-end, ending at its headline 51.6%. Tracks every home by its latest certificate. EPC register.
What is at stake in the local market
We match HM Land Registry sales to EPC certificates: price per m², below-C matched-sale exposure, the observed C-or-above price/m² spread, and transaction-rate signals. Modelled estimates, shown with match coverage; not valuations. Methodology
Matched-sale exposure
£1.7bn
estimate for below-C stock; not a valuation.
Median sale price
£146k
typical matched sale here.
Matched sale £/m²
£1,639/m²
median, from matched sales.
Spread vs cost
5.23×
observed C+ price/m² spread ÷ modelled cost-to-C.
39.0% coverageMatched-sale estimate from recent HM Land Registry sales. Not a valuation. Methodology.
- £1,639/m²
- £1.7bnmatched-sale estimate of below-C rated stock value; not a valuation
- +30.8%
- Homes rated C or better sell for ~+30.8% more per m², holding size, type and location constant (95% CI +30.8%–+30.8%).
- 0.94×
Matched sale £/m²
Matched-sale exposure
C+ sale-price premium — size/type/location controlled
Below-C transaction rate
Fuel poverty & deprivation here
WIMD provides current local deprivation context. The latest Welsh fuel-poverty estimate is national only, so no local percentage is inferred for this authority.
Neighbourhoods in the most-deprived 10%
17.0%
share of LSOAs in the most-deprived national decile · Welsh Index of Multiple Deprivation 2025.
Private rented sector
The rented-stock cut
63.1% (based on 91.1% tenure coverage)
Make it specific
Area averages cannot tell you what one home needs.
Check a real address in Neath Port Talbot for its EPC, running costs, route to band C and available support. Landlords can then compare that home across a portfolio.
Prefer a general estimate? Model a home type in the cost calculator.
For local reporters: this is Neath Port Talbot's citable figure — copy the line below or embed the live widget, free to use with attribution.
Cite this figure / embed
Citation
The Home Index (2026-Q2): Neath Port Talbot has a retrofit gap of 51.6% — the share of rated homes below EPC band C. Source: EPC Open Data (Open Government Licence).
Embed this figure
<iframe src="https://thehomeindex.org/embed/lad/W06000012" width="320" height="200" style="border:0" title="The Home Index — Neath Port Talbot" loading="lazy"></iframe>