EPC rating and sold prices in BD23 (North Yorkshire)
In postcode district BD23 (North Yorkshire), homes rated EPC C or better sold for 13% more per square metre than D–G homes (median £2,932 vs £2,585, 6,107 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.6% less (95% range −3.1% to −0.1%). 1 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 93 m² against 86 m² for D–G; the most common build period is 2012 onwards for C+ and before 1900 for D–G; 54% of C+ and 46% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +13% | — |
| Whole price, nothing held equal | +13.9% | +10.9% to +16.9% |
| Same floor area | +10.7% | +9.0% to +12.4% |
| + same property type | +7.1% | +5.6% to +8.6% |
| + same build period | +2.5% | +0.7% to +4.3% |
| + same year of sale | −1.6% | −3.1% to −0.1% |
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 BD23
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| BD23 1 | 1,506 | +11% | −0.8% | −3.5% to +2.1% |
| BD23 2 | 1,976 | +27% | +0.3% | −1.7% to +2.4% |
| BD23 3 | 811 | +3% | +1.4% | −2.3% to +5.3% |
| BD23 4 | 588 | +10% | −9.6% ▼ | −14.6% to −4.3% |
| BD23 5 | 551 | +2% | +1.7% | −2.7% to +6.3% |
| BD23 6 | 675 | +5% | −3.2% | −7.2% to +1.0% |
▲ 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 BD23
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 33 | £3,911 |
| B | 804 | £3,314 |
| C | 1,319 | £2,710 |
| D | 2,638 | £2,597 |
| E | 961 | £2,595 |
| F | 287 | £2,489 |
| G | 65 | £2,273 |
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.