EPC rating and sold prices in SS7 (Castle Point)
In postcode district SS7 (Castle Point), homes rated EPC C or better sold for 2% less per square metre than D–G homes (median £3,826 vs £3,896, 9,059 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.9% more (95% range +0.7% to +3.1%). 2 of 5 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 93 m² against 89 m² for D–G; the most common build period is 2012 onwards for C+ and 1950–1966 for D–G; 64% of C+ and 89% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | −2% | — |
| Whole price, nothing held equal | +1.9% | −0.1% to +4.0% |
| Same floor area | −1.7% | −2.9% to −0.6% |
| + same property type | +8.1% | +6.9% to +9.3% |
| + same build period | +5.4% | +3.9% to +6.8% |
| + same year of sale | +1.9% | +0.7% to +3.1% |
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 SS7
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| SS7 1 | 1,798 | −3% | +1.4% | −1.1% to +3.9% |
| SS7 2 | 1,934 | −9% | +3.0% ▲ | +0.7% to +5.3% |
| SS7 3 | 1,954 | 0% | +0.3% | −2.0% to +2.7% |
| SS7 4 | 1,337 | +1% | +1.5% | −0.4% to +3.4% |
| SS7 5 | 2,036 | +2% | +3.4% ▲ | +0.9% to +6.0% |
▲ 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 SS7
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 25 | £3,716 |
| B | 766 | £3,889 |
| C | 1,680 | £3,792 |
| D | 4,374 | £3,908 |
| E | 1,835 | £3,854 |
| F | 324 | £3,904 |
| G | 55 | £4,638 |
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.