EPC rating and sold prices in WA10 (St. Helens)
In postcode district WA10 (St. Helens), homes rated EPC C or better sold for 27% more per square metre than D–G homes (median £2,011 vs £1,588, 6,273 sales). Like for like — same size, type, build period and year — the difference is +0.6% (95% range −1.1% to +2.3%): the EPC band itself is not reflected in sale prices here. 2 of 6 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 78 m² against 84 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 60% of C+ and 50% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +27% | — |
| Whole price, nothing held equal | +18.6% | +15.3% to +22.0% |
| Same floor area | +23.4% | +21.1% to +25.8% |
| + same property type | +14.8% | +12.9% to +16.8% |
| + same build period | +7.1% | +5.0% to +9.3% |
| + same year of sale | +0.6% | −1.1% to +2.3% |
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 WA10
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| WA10 1 | 327 | +13% | +10.9% ▲ | +4.0% to +18.3% |
| WA10 2 | 768 | +57% | +6.2% ▲ | +0.6% to +12.1% |
| WA10 3 | 1,302 | +13% | −1.9% | −4.9% to +1.2% |
| WA10 4 | 1,571 | +24% | +1.9% | −1.1% to +5.0% |
| WA10 5 | 1,076 | +11% | +3.5% | −0.1% to +7.2% |
| WA10 6 | 1,229 | +20% | −0.5% | −3.8% to +3.0% |
▲ 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 WA10
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 2 | too few |
| B | 690 | £2,253 |
| C | 1,658 | £1,859 |
| D | 2,972 | £1,629 |
| E | 770 | £1,490 |
| F | 131 | £1,296 |
| G | 50 | £1,032 |
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.