EPC rating and sold prices in SE15 (Southwark)
In postcode district SE15 (Southwark), homes rated EPC C or better sold for 8% less per square metre than D–G homes (median £6,825 vs £7,442, 5,963 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.7% more (95% range +0.3% to +3.2%). 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 66 m² against 82 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 2% of C+ and 8% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | −8% | — |
| Whole price, nothing held equal | −22.6% | −24.4% to −20.7% |
| Same floor area | −10.0% | −11.4% to −8.6% |
| + same property type | −4.3% | −5.8% to −2.9% |
| + same build period | +4.0% | +2.4% to +5.5% |
| + same year of sale | +1.7% | +0.3% to +3.2% |
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 SE15
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| SE15 1 | 302 | −9% | +2.0% | −3.9% to +8.4% |
| SE15 2 | 1,428 | +2% | +0.9% | −1.9% to +3.8% |
| SE15 3 | 1,612 | −9% | −0.9% | −3.0% to +1.3% |
| SE15 4 | 1,185 | −4% | +6.8% ▲ | +3.9% to +9.8% |
| SE15 5 | 744 | −7% | +1.2% | −3.6% to +6.2% |
| SE15 6 | 692 | +11% | +1.2% | −2.3% 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 SE15
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 17 | £7,792 |
| B | 748 | £6,947 |
| C | 2,043 | £6,735 |
| D | 2,390 | £7,500 |
| E | 662 | £7,385 |
| F | 74 | £7,138 |
| G | 29 | £7,083 |
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.