EPC rating and sold prices in LL14 (Wrexham)
In postcode district LL14 (Wrexham), homes rated EPC C or better sold for 13% more per square metre than D–G homes (median £2,018 vs £1,792, 3,806 sales). Like for like — same size, type, build period and year — the difference is +1.3% (95% range −0.4% to +3.0%): the EPC band itself is not reflected in sale prices here. 2 of 6 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 81 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 74% of C+ and 70% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +13% | — |
| Whole price, nothing held equal | +15.9% | +12.9% to +19.0% |
| Same floor area | +14.2% | +11.9% to +16.6% |
| + same property type | +13.9% | +11.9% to +15.9% |
| + same build period | +6.7% | +4.5% to +8.9% |
| + same year of sale | +1.3% | −0.4% to +3.0% |
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 LL14
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| LL14 1 | 648 | +22% | +8.8% ▲ | +4.4% to +13.5% |
| LL14 2 | 869 | +8% | +1.9% | −1.0% to +4.8% |
| LL14 3 | 591 | +24% | +6.9% ▲ | +1.3% to +12.8% |
| LL14 4 | 519 | +8% | −1.1% | −4.6% to +2.5% |
| LL14 5 | 645 | +8% | +1.5% | −2.0% to +5.1% |
| LL14 6 | 534 | +6% | −3.1% | −7.9% to +2.0% |
▲ 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 LL14
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 2 | too few |
| B | 225 | £2,090 |
| C | 1,096 | £2,011 |
| D | 1,692 | £1,846 |
| E | 622 | £1,622 |
| F | 124 | £1,667 |
| G | 45 | £1,557 |
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.