EPC rating and sold prices in L21 (Sefton)
In postcode district L21 (Sefton), homes rated EPC C or better sold for 25% more per square metre than D–G homes (median £1,793 vs £1,437, 2,791 sales). Like for like — same size, type, build period and year — the difference is +0.4% (95% range −2.2% to +3.1%): the EPC band itself is not reflected in sale prices here. 2 of 4 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 81 m² against 85 m² for D–G; the most common build period is 2012 onwards for C+ and 1930–1949 for D–G; 52% of C+ and 45% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +25% | — |
| Whole price, nothing held equal | +18.9% | +14.5% to +23.5% |
| Same floor area | +27.0% | +22.8% to +31.3% |
| + same property type | +18.1% | +14.9% to +21.3% |
| + same build period | +9.1% | +5.7% to +12.7% |
| + same year of sale | +0.4% | −2.2% 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 L21
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| L21 0 | 231 | +2% | −3.7% | −9.2% to +2.1% |
| L21 1 | 286 | +35% | too few | — |
| L21 2 | 130 | +20% | too few | — |
| L21 3 | 71 | +22% | too few | — |
| L21 4 | 137 | +29% | too few | — |
| L21 5 | 260 | +4% | −3.2% | −8.3% to +2.2% |
| L21 6 | 119 | +20% | too few | — |
| L21 7 | 286 | +4% | too few | — |
| L21 8 | 586 | +163% | +6.5% ▲ | +0.1% to +13.2% |
| L21 9 | 685 | +5% | −4.2% ▼ | −7.9% to −0.4% |
▲ 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 L21
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| B | 228 | £2,860 |
| C | 754 | £1,627 |
| D | 1,329 | £1,495 |
| E | 375 | £1,317 |
| F | 65 | £1,088 |
| G | 40 | £847 |
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.