EPC rating and sold prices in NG15 (Ashfield)
In postcode district NG15 (Ashfield), homes rated EPC C or better sold for 11% more per square metre than D–G homes (median £2,345 vs £2,105, 9,463 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 2.0% less (95% range −3.5% to −0.5%). 1 of 5 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 92 m² against 84 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 74% of C+ and 73% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +11% | — |
| Whole price, nothing held equal | +22.7% | +20.4% to +25.0% |
| Same floor area | +14.3% | +12.7% to +15.8% |
| + same property type | +13.2% | +11.9% to +14.5% |
| + same build period | +3.9% | +2.0% to +5.9% |
| + same year of sale | −2.0% | −3.5% to −0.5% |
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 NG15
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| NG15 0 | 698 | +37% | +4.2% | −1.0% to +9.6% |
| NG15 6 | 3,399 | +11% | −0.8% | −2.6% to +1.0% |
| NG15 7 | 2,591 | +33% | −1.2% | −4.1% to +1.7% |
| NG15 8 | 1,682 | −4% | −5.2% ▼ | −9.5% to −0.8% |
| NG15 9 | 1,093 | 0% | +1.8% | −1.4% to +5.0% |
▲ 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 NG15
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 34 | £3,000 |
| B | 2,514 | £2,456 |
| C | 2,353 | £2,222 |
| D | 3,164 | £2,231 |
| E | 1,154 | £1,803 |
| F | 208 | £1,604 |
| G | 36 | £1,302 |
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.