Research
Full-register data studies
Studies built on the complete EPC register and HM Land Registry Price Paid data — not a subset — with the method and its limits shown on every figure.
Built on EPC Open Data and HM Land Registry Price Paid (Open Government Licence). Every figure is free to cite with attribution.
Running costs · Full register
The most expensive places to heat a home
Local authorities and constituencies ranked by the modelled annual running cost on the EPC register, fused with the retrofit gap to map where bills and inefficiency meet.
Read the study →Tenure · Full register
Rental vs owner: the EPC gap
On the full register, owner-occupied homes carry the larger below-C share — and age-for-age, rented stock is the better one. Plus the local areas where the rental gap still bites.
Read the study →Rental yield · Full register
Where EPC upgrades eat the most rental income
A below-C rental costs a median of around 8 months' rent to bring up to standard — but under 3 months in prime London and over 17 in rural Wales, where upgrade costs are high and rents are low.
Read the study →Running costs · Full register
The areas most exposed to rising energy bills
A typical home's modelled energy bill — heating, hot water and lighting — now and at 2030 under illustrative price-cap scenarios, ranked by local authority. A scenario calculator, not a forecast.
Read the study →