EPC rating and sold prices in ME4 (Medway)
In postcode district ME4 (Medway), homes rated EPC C or better sold for 28% more per square metre than D–G homes (median £3,333 vs £2,605, 5,433 sales). Like for like — same size, type, build period and year — the difference is −0.9% (95% range −2.7% to +0.9%): the EPC band itself is not reflected in sale prices here. 2 of 4 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 78 m² against 76 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 18% of C+ and 15% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +28% | — |
| Whole price, nothing held equal | +26.7% | +23.9% to +29.7% |
| Same floor area | +22.6% | +20.7% to +24.5% |
| + same property type | +25.1% | +22.9% to +27.4% |
| + same build period | +4.4% | +2.3% to +6.6% |
| + same year of sale | −0.9% | −2.7% to +0.9% |
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 ME4
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| ME4 3 | 1,063 | −8% | −4.6% ▼ | −8.0% to −1.1% |
| ME4 4 | 992 | +22% | −8.5% ▼ | −13.8% to −2.8% |
| ME4 5 | 1,843 | +14% | +0.6% | −1.9% to +3.2% |
| ME4 6 | 1,535 | +16% | +2.7% | −0.1% to +5.6% |
▲ 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 ME4
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 1,285 | £3,393 |
| C | 1,449 | £3,239 |
| D | 2,008 | £2,712 |
| E | 557 | £2,340 |
| F | 93 | £2,391 |
| G | 41 | £2,105 |
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.