EPC rating and sold prices in L26 (Knowsley)
In postcode district L26 (Knowsley), homes rated EPC C or better sold for 26% more per square metre than D–G homes (median £2,545 vs £2,021, 2,417 sales). Like for like — same size, type, build period and year — the difference is +1.6% (95% range −0.5% to +3.7%): the EPC band itself is not reflected in sale prices here. 1 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 92 m² against 84 m² for D–G; the most common build period is 2012 onwards for C+ and 1950–1966 for D–G; 79% of C+ and 75% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +26% | — |
| Whole price, nothing held equal | +32.4% | +28.0% to +37.0% |
| Same floor area | +21.3% | +18.1% to +24.7% |
| + same property type | +19.0% | +16.4% to +21.7% |
| + same build period | +9.0% | +6.2% to +11.9% |
| + same year of sale | +1.6% | −0.5% to +3.7% |
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 L26
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| L26 0 | 568 | +64% | −0.8% | −5.7% to +4.4% |
| L26 1 | 382 | −3% | −1.2% | −5.8% to +3.6% |
| L26 2 | 39 | +6% | too few | — |
| L26 6 | 463 | +20% | too few | — |
| L26 7 | 650 | +10% | +3.3% ▲ | +0.7% to +6.0% |
| L26 9 | 303 | +3% | −2.1% | −7.4% to +3.5% |
▲ 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 L26
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 21 | £3,250 |
| B | 609 | £3,189 |
| C | 865 | £2,100 |
| D | 759 | £2,059 |
| E | 131 | £1,961 |
| F | 23 | £1,826 |
| G | 9 | too few |
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.