EPC rating and sold prices in B31 (Birmingham)
In postcode district B31 (Birmingham), homes rated EPC C or better sold for 10% more per square metre than D–G homes (median £2,566 vs £2,329, 8,645 sales). Like for like — same size, type, build period and year — the difference is −0.1% (95% range −1.8% to +1.5%): the EPC band itself is not reflected in sale prices here. 3 of 5 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 76 m² against 80 m² for D–G; the most common build period is 2012 onwards for C+ and 1930–1949 for D–G; 44% 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) | +10% | — |
| Whole price, nothing held equal | +5.8% | +3.8% to +7.9% |
| Same floor area | +10.9% | +9.3% to +12.6% |
| + same property type | +12.9% | +11.2% to +14.6% |
| + same build period | +5.7% | +3.6% to +7.8% |
| + same year of sale | −0.1% | −1.8% to +1.5% |
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 B31
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| B31 1 | 1,408 | +3% | +4.5% ▲ | +0.5% to +8.7% |
| B31 2 | 2,580 | +25% | +4.8% ▲ | +0.9% to +8.8% |
| B31 3 | 1,440 | +2% | −1.5% | −4.2% to +1.2% |
| B31 4 | 1,417 | −7% | −1.0% | −4.0% to +2.0% |
| B31 5 | 1,800 | +6% | −3.8% ▼ | −7.3% to −0.3% |
▲ 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 B31
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 10 | £3,709 |
| B | 1,497 | £3,102 |
| C | 2,094 | £2,344 |
| D | 3,696 | £2,393 |
| E | 1,152 | £2,181 |
| F | 155 | £2,153 |
| G | 41 | £1,804 |
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.