EPC rating and sold prices in L23 (Sefton)
In postcode district L23 (Sefton), homes rated EPC C or better sold for 18% more per square metre than D–G homes (median £2,579 vs £2,189, 4,989 sales). Like for like — same size, type, build period and year — the difference is +0.8% (95% range −0.9% to +2.6%): the EPC band itself is not reflected in sale prices here. 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 95 m² against 104 m² for D–G; the most common build period is 2012 onwards for C+ and 1930–1949 for D–G; 55% of C+ and 77% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +18% | — |
| Whole price, nothing held equal | −1.1% | −4.1% to +1.9% |
| Same floor area | +11.4% | +9.4% to +13.5% |
| + same property type | +12.9% | +10.9% to +14.9% |
| + same build period | +7.9% | +5.8% to +10.2% |
| + same year of sale | +0.8% | −0.9% to +2.6% |
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 L23
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| L23 0 | 812 | +18% | +3.4% | −0.5% to +7.4% |
| L23 1 | 417 | +31% | +1.8% | −4.6% to +8.6% |
| L23 2 | 592 | +27% | +2.9% | −1.0% to +7.0% |
| L23 3 | 391 | +14% | +4.8% ▲ | +0.5% to +9.2% |
| L23 4 | 207 | +44% | too few | — |
| L23 5 | 351 | +20% | +3.9% | −1.7% to +9.8% |
| L23 6 | 623 | +12% | +2.2% | −2.4% to +7.1% |
| L23 7 | 495 | +13% | +2.8% | −2.4% to +8.1% |
| L23 8 | 361 | 0% | too few | — |
| L23 9 | 740 | +10% | −3.5% | −7.6% to +0.9% |
▲ 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 L23
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 69 | £3,246 |
| B | 379 | £2,911 |
| C | 1,167 | £2,397 |
| D | 2,293 | £2,258 |
| E | 891 | £2,051 |
| F | 152 | £1,939 |
| G | 38 | £1,716 |
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.