EPC rating and sold prices in L36 (Knowsley)
In postcode district L36 (Knowsley), homes rated EPC C or better sold for 19% more per square metre than D–G homes (median £1,959 vs £1,644, 5,732 sales). Like for like — same size, type, build period and year — the difference is −0.5% (95% range −2.2% to +1.3%): the EPC band itself is not reflected in sale prices here. 0 of 10 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 84 m² against 86 m² for D–G; the most common build period is 2012 onwards for C+ and 1930–1949 for D–G; 70% of C+ and 63% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +19% | — |
| Whole price, nothing held equal | +13.3% | +10.7% to +16.0% |
| Same floor area | +17.0% | +14.9% to +19.1% |
| + same property type | +8.7% | +7.0% to +10.5% |
| + same build period | +5.4% | +3.1% to +7.7% |
| + same year of sale | −0.5% | −2.2% to +1.3% |
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 L36
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| L36 0 | 473 | −1% | −4.0% | −8.4% to +0.6% |
| L36 1 | 382 | +26% | −1.5% | −6.6% to +3.9% |
| L36 2 | 425 | +9% | −5.1% | −11.1% to +1.2% |
| L36 3 | 515 | +35% | +3.5% | −1.3% to +8.5% |
| L36 4 | 1,260 | +30% | +2.7% | −1.6% to +7.2% |
| L36 5 | 645 | +14% | +3.0% | −0.9% to +7.0% |
| L36 6 | 356 | +5% | +1.1% | −3.8% to +6.3% |
| L36 7 | 358 | +5% | −2.1% | −7.0% to +3.1% |
| L36 8 | 752 | +34% | +2.6% | −1.9% to +7.2% |
| L36 9 | 566 | +17% | +4.0% | −1.5% to +9.9% |
▲ 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 L36
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 1 | too few |
| B | 1,299 | £2,342 |
| C | 1,736 | £1,684 |
| D | 2,066 | £1,699 |
| E | 515 | £1,513 |
| F | 88 | £1,411 |
| G | 27 | £1,250 |
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.