EPC rating and sold prices in SE1 (Southwark)
In postcode district SE1 (Southwark), homes rated EPC C or better sold for 22% more per square metre than D–G homes (median £10,312 vs £8,471, 8,489 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 3.0% more (95% range +1.0% to +5.1%). 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 68 m² against 66 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 0% of C+ and 1% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +22% | — |
| Whole price, nothing held equal | +28.2% | +24.8% to +31.7% |
| Same floor area | +21.0% | +18.9% to +23.1% |
| + same property type | +19.4% | +17.3% to +21.6% |
| + same build period | +2.2% | +0.2% to +4.3% |
| + same year of sale | +3.0% | +1.0% to +5.1% |
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 SE1
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| SE1 0 | 412 | +10% | too few | — |
| SE1 1 | 349 | +18% | −4.7% | −9.7% to +0.6% |
| SE1 2 | 1,242 | +15% | +0.3% | −3.3% to +3.9% |
| SE1 3 | 1,253 | +4% | +0.2% | −3.6% to +4.2% |
| SE1 4 | 977 | +14% | +0.6% | −3.6% to +4.9% |
| SE1 5 | 736 | −2% | −0.2% | −3.3% to +3.1% |
| SE1 6 | 1,064 | +17% | −6.1% ▼ | −11.4% to −0.6% |
| SE1 7 | 1,259 | +54% | +5.5% | 0.0% to +11.4% |
| SE1 8 | 612 | −7% | too few | — |
| SE1 9 | 585 | +65% | −5.1% | −12.3% to +2.7% |
▲ 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 SE1
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 4,013 | £11,329 |
| C | 2,648 | £9,000 |
| D | 1,380 | £8,519 |
| E | 360 | £8,354 |
| F | 76 | £7,938 |
| G | 12 | £9,122 |
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.