EPC rating and sold prices in MK4 (Milton Keynes)
In postcode district MK4 (Milton Keynes), homes rated EPC C or better sold for 4% less per square metre than D–G homes (median £3,562 vs £3,729, 4,026 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 3.0% less (95% range −5.9% to −0.1%). 0 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 95 m² against 76 m² for D–G; the most common build period is 2012 onwards for C+ and 1983–1990 for D–G; 63% of C+ and 72% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | −4% | — |
| Whole price, nothing held equal | +12.9% | +8.2% to +17.7% |
| Same floor area | −5.3% | −7.9% to −2.7% |
| + same property type | +5.1% | +2.5% to +7.8% |
| + same build period | +1.0% | −1.9% to +4.1% |
| + same year of sale | −3.0% | −5.9% to −0.1% |
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 MK4
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| MK4 1 | 684 | +1% | −5.0% | −10.1% to +0.5% |
| MK4 2 | 726 | +9% | +4.5% | −0.8% to +10.1% |
| MK4 3 | 564 | −7% | −4.8% | −11.4% to +2.3% |
| MK4 4 | 2,052 | +5% | −4.2% | −9.2% to +1.1% |
▲ 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 MK4
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 34 | £4,340 |
| B | 1,012 | £3,735 |
| C | 2,007 | £3,476 |
| D | 906 | £3,750 |
| E | 61 | £3,300 |
| F | 6 | 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.