EPC rating and sold prices in L20 (Sefton)
In postcode district L20 (Sefton), homes rated EPC C or better sold for 55% more per square metre than D–G homes (median £1,613 vs £1,044, 3,425 sales). Like for like — same size, type, build period and year — the difference is +0.7% (95% range −1.7% to +3.2%): the EPC band itself is not reflected in sale prices here. 1 of 3 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 87 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 50% of C+ and 32% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +55% | — |
| Whole price, nothing held equal | +31.1% | +27.0% to +35.4% |
| Same floor area | +39.6% | +35.5% to +43.8% |
| + same property type | +22.7% | +19.6% to +25.9% |
| + same build period | +12.5% | +9.0% to +16.1% |
| + same year of sale | +0.7% | −1.7% 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 L20
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| L20 0 | 257 | +18% | too few | — |
| L20 2 | 238 | +52% | too few | — |
| L20 3 | 173 | +37% | too few | — |
| L20 4 | 635 | +74% | +6.4% ▲ | +1.9% to +11.1% |
| L20 5 | 273 | +22% | too few | — |
| L20 6 | 889 | +27% | +3.4% | −0.8% to +7.7% |
| L20 7 | 281 | +61% | too few | — |
| L20 9 | 670 | +25% | +5.0% | −0.4% to +10.7% |
▲ 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 L20
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 459 | £1,825 |
| C | 842 | £1,375 |
| D | 1,470 | £1,085 |
| E | 509 | £957 |
| F | 89 | £746 |
| G | 56 | £645 |
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.