EPC rating and sold prices in NG17 (Ashfield)
In postcode district NG17 (Ashfield), homes rated EPC C or better sold for 25% more per square metre than D–G homes (median £2,000 vs £1,600, 11,857 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.3% more (95% range +0.2% to +2.4%). 1 of 8 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 86 m² against 85 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 78% 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) | +25% | — |
| Whole price, nothing held equal | +33.1% | +31.0% to +35.1% |
| Same floor area | +28.7% | +27.1% to +30.4% |
| + same property type | +24.0% | +22.7% to +25.3% |
| + same build period | +8.2% | +6.7% to +9.7% |
| + same year of sale | +1.3% | +0.2% to +2.4% |
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 NG17
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| NG17 1 | 1,123 | +31% | −0.7% | −3.5% to +2.3% |
| NG17 2 | 2,038 | +20% | +0.3% | −1.8% to +2.4% |
| NG17 3 | 1,676 | +46% | +4.2% ▲ | +1.0% to +7.5% |
| NG17 4 | 1,556 | +38% | +2.4% | −0.9% to +5.7% |
| NG17 5 | 961 | +9% | +4.1% | −0.4% to +8.8% |
| NG17 7 | 1,221 | +22% | −1.2% | −4.6% to +2.4% |
| NG17 8 | 2,288 | +15% | +1.2% | −1.0% to +3.4% |
| NG17 9 | 994 | +7% | +0.6% | −3.4% to +4.8% |
▲ 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 NG17
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 49 | £2,865 |
| B | 1,606 | £2,166 |
| C | 3,285 | £1,923 |
| D | 4,852 | £1,744 |
| E | 1,683 | £1,284 |
| F | 325 | £1,083 |
| G | 57 | £1,037 |
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.