EPC rating and sold prices in CH66 (Cheshire West and Chester)
In postcode district CH66 (Cheshire West and Chester), homes rated EPC C or better sold for 12% more per square metre than D–G homes (median £2,411 vs £2,151, 6,360 sales). Like for like — same size, type, build period and year — the difference is −0.4% (95% range −1.7% to +0.9%): the EPC band itself is not reflected in sale prices here. 2 of 4 sectors with enough sales show a difference distinguishable from zero. Data: HM Land Registry to 30 September 2026, EPC register.
From the raw gap to like-for-like
The homes are not alike: C+ homes here have a median floor area of 90 m² against 84 m² for D–G; the most common build period is 2012 onwards for C+ and 1967–1975 for D–G; 74% of C+ and 83% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +12% | — |
| Whole price, nothing held equal | +18.2% | +15.7% to +20.7% |
| Same floor area | +8.7% | +7.1% to +10.3% |
| + same property type | +10.0% | +8.6% to +11.4% |
| + same build period | +4.2% | +2.7% to +5.8% |
| + same year of sale | −0.4% | −1.7% to +0.9% |
The first row compares median prices per m²; the second compares whole prices; each later row adds one more thing that must be equal, ending with the like-for-like premium (regression of log price; build period from the certificate, 12 bands). The raw gap per m² and the whole-price gap differ because C+ and D–G homes differ in size.
Postcode sectors in CH66
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| CH66 1 | 1,443 | +10% | −4.3% ▼ | −8.0% to −0.4% |
| CH66 2 | 1,989 | +7% | +1.7% ▲ | +0.1% to +3.2% |
| CH66 3 | 704 | +9% | +0.8% | −2.7% to +4.3% |
| CH66 4 | 1,820 | +19% | +1.6% | −0.7% to +4.1% |
| CH66 5 | 112 | +7% | too few | — |
| CH66 7 | 224 | +45% | too few | — |
▲ green: premium distinguishable from zero; ▼ red: discount; plain: no measurable difference. Small areas have fewer sales, so their 95% ranges are wider.
Sold prices by EPC band in CH66
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 30 | £3,246 |
| B | 1,139 | £2,625 |
| C | 1,761 | £2,237 |
| D | 2,728 | £2,187 |
| E | 602 | £2,027 |
| F | 81 | £1,891 |
| G | 19 | £1,455 |
A median is shown when a band has at least 10 sales.
How this is calculated
- Every standard sale (HM Land Registry Price Paid, category A) since January 2015 is matched to the latest energy certificate of the same address (postcode + house number or name + flat) lodged from 10 years before to 3 months after the sale; sales with no certificate or an ambiguous match are left out. Across England and Wales 92% of sales match.
- Price per m² uses the certificate's total floor area (15–1,000 m²).
- Like-for-like premium: regression of the log of price on “C or better”, log floor area, property type, the certificate's build period and the year of sale. The 95% range shows how precise the estimate is; when it includes zero, the data cannot tell the premium apart from none.
Caveats
- The band is the one on the certificate before the sale; certificates are a median 0.8 years old at the sale, but a quarter are over 4 years old and some homes were improved since.
- Condition, garden, parking, views and the exact position within the sector are not known; a premium could hide in them, or they could hide one.
- Individual sales and addresses are not shown.