EPC rating and sold prices in DE23 (Derby)
In postcode district DE23 (Derby), homes rated EPC C or better sold for 35% more per square metre than D–G homes (median £2,561 vs £1,893, 7,199 sales). Like for like — same size, type, build period and year — the difference is +1.4% (95% range −0.3% to +3.3%): the EPC band itself is not reflected in sale prices here. 0 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 90 m² against 86 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 75% of C+ and 63% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +35% | — |
| Whole price, nothing held equal | +41.2% | +37.8% to +44.8% |
| Same floor area | +34.3% | +31.9% to +36.6% |
| + same property type | +25.0% | +23.3% to +26.8% |
| + same build period | +8.2% | +6.0% to +10.4% |
| + same year of sale | +1.4% | −0.3% to +3.3% |
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 DE23
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| DE23 1 | 1,263 | +2% | −0.4% | −3.3% to +2.5% |
| DE23 2 | 401 | +1% | 0.0% | −3.8% to +3.9% |
| DE23 3 | 1,768 | +3% | −0.8% | −3.3% to +1.7% |
| DE23 4 | 447 | +12% | +1.6% | −5.0% to +8.6% |
| DE23 6 | 1,881 | +6% | +3.9% | −0.3% to +8.3% |
| DE23 8 | 1,439 | +25% | +1.0% | −4.6% to +6.9% |
▲ 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 DE23
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 8 | too few |
| B | 1,241 | £2,692 |
| C | 1,222 | £2,273 |
| D | 3,103 | £2,031 |
| E | 1,293 | £1,630 |
| F | 273 | £1,634 |
| G | 59 | £1,290 |
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.