EPC rating and sold prices in CW9 (Cheshire West and Chester)
In postcode district CW9 (Cheshire West and Chester), homes rated EPC C or better sold for 16% more per square metre than D–G homes (median £2,604 vs £2,244, 6,762 sales). Like for like — same size, type, build period and year — the difference is −0.7% (95% range −2.5% to +1.1%): the EPC band itself is not reflected in sale prices here. 1 of 3 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 94 m² against 88 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 69% of C+ and 71% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +16% | — |
| Whole price, nothing held equal | +13.8% | +10.9% to +16.8% |
| Same floor area | +12.6% | +10.8% to +14.5% |
| + same property type | +8.8% | +7.1% to +10.4% |
| + same build period | +4.2% | +2.1% to +6.4% |
| + same year of sale | −0.7% | −2.5% to +1.1% |
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 CW9
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| CW9 5 | 708 | +23% | too few | — |
| CW9 6 | 890 | +17% | +0.2% | −4.8% to +5.6% |
| CW9 7 | 2,177 | +29% | +3.9% ▲ | +1.0% to +6.9% |
| CW9 8 | 2,987 | +12% | +0.8% | −1.2% to +2.9% |
▲ 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 CW9
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 82 | £2,713 |
| B | 1,372 | £2,802 |
| C | 1,442 | £2,333 |
| D | 2,866 | £2,315 |
| E | 825 | £2,011 |
| F | 138 | £1,871 |
| G | 37 | £1,765 |
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.