EPC rating and sold prices in NW3 (Camden)
In postcode district NW3 (Camden), homes rated EPC C or better sold for 4% less per square metre than D–G homes (median £11,359 vs £11,819, 4,890 sales). Like for like — same size, type, build period and year — the difference is +1.1% (95% range −0.7% to +2.9%): the EPC band itself is not reflected in sale prices here. 1 of 7 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 80 m² against 99 m² for D–G; both groups are most often built in 1900–1929; 5% 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) | −4% | — |
| Whole price, nothing held equal | −21.6% | −24.9% to −18.3% |
| Same floor area | −2.7% | −4.3% to −1.1% |
| + same property type | +0.3% | −1.3% to +2.0% |
| + same build period | +1.2% | −0.6% to +3.1% |
| + same year of sale | +1.1% | −0.7% to +2.9% |
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 NW3
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| NW3 1 | 480 | −3% | +3.8% | −1.3% to +9.3% |
| NW3 2 | 1,099 | −4% | −2.8% | −6.5% to +0.9% |
| NW3 3 | 641 | −3% | −0.6% | −4.9% to +3.8% |
| NW3 4 | 923 | +1% | +4.9% ▲ | +2.0% to +8.0% |
| NW3 5 | 597 | +1% | +2.3% | −3.7% to +8.6% |
| NW3 6 | 466 | 0% | +3.7% | −2.6% to +10.3% |
| NW3 7 | 684 | −5% | +1.2% | −4.0% to +6.8% |
▲ 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 NW3
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 424 | £11,555 |
| C | 1,596 | £11,327 |
| D | 2,030 | £11,667 |
| E | 705 | £12,136 |
| F | 103 | £12,752 |
| G | 32 | £9,958 |
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.