EPC rating and sold prices in HX1 (Calderdale)
In postcode district HX1 (Calderdale), homes rated EPC C or better sold for 45% more per square metre than D–G homes (median £1,600 vs £1,100, 2,617 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 5.8% more (95% range +1.7% to +10.1%). 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 66 m² against 84 m² for D–G; the most common build period is 2003–2006 for C+ and before 1900 for D–G; 13% of C+ and 14% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +45% | — |
| Whole price, nothing held equal | +14.0% | +8.5% to +19.8% |
| Same floor area | +36.1% | +31.0% to +41.4% |
| + same property type | +20.3% | +15.6% to +25.3% |
| + same build period | +11.7% | +7.2% to +16.3% |
| + same year of sale | +5.8% | +1.7% to +10.1% |
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 HX1
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| HX1 2 | 884 | +18% | too few | — |
| HX1 3 | 907 | +18% | too few | — |
| HX1 4 | 569 | +40% | too few | — |
| HX1 5 | 233 | +93% | 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 HX1
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 59 | £1,519 |
| C | 430 | £1,627 |
| D | 1,105 | £1,238 |
| E | 799 | £980 |
| F | 153 | £857 |
| G | 71 | £739 |
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.