EPC rating and sold prices in SW16 (Lambeth)
In postcode district SW16 (Lambeth), homes rated EPC C or better sold for 4% more per square metre than D–G homes (median £6,122 vs £5,915, 9,618 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.5% more (95% range +0.5% to +2.5%). 2 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 68 m² against 88 m² for D–G; both groups are most often built in 1900–1929; 5% of C+ and 19% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +4% | — |
| Whole price, nothing held equal | −17.8% | −19.1% to −16.4% |
| Same floor area | −2.2% | −3.1% to −1.3% |
| + same property type | −0.6% | −1.5% to +0.4% |
| + same build period | +3.2% | +2.2% to +4.3% |
| + same year of sale | +1.5% | +0.5% to +2.5% |
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 SW16
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| SW16 1 | 1,434 | +2% | −0.5% | −2.7% to +1.7% |
| SW16 2 | 2,302 | +2% | +0.3% | −1.4% to +2.0% |
| SW16 3 | 915 | +1% | +0.2% | −3.3% to +3.8% |
| SW16 4 | 1,155 | +6% | +4.6% ▲ | +1.8% to +7.4% |
| SW16 5 | 1,865 | +1% | +2.4% ▲ | +0.5% to +4.4% |
| SW16 6 | 1,947 | 0% | +0.8% | −1.1% to +2.9% |
▲ 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 SW16
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 10 | £5,645 |
| B | 739 | £6,142 |
| C | 2,839 | £6,116 |
| D | 4,277 | £6,024 |
| E | 1,498 | £5,695 |
| F | 195 | £5,421 |
| G | 60 | £5,334 |
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.