EPC rating and sold prices in SK17 (High Peak)
In postcode district SK17 (High Peak), homes rated EPC C or better sold for 12% more per square metre than D–G homes (median £2,614 vs £2,340, 5,611 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 3.9% less (95% range −5.6% to −2.0%). 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 85 m² against 88 m² for D–G; the most common build period is 2012 onwards for C+ and 1900–1929 for D–G; 60% of C+ and 54% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +12% | — |
| Whole price, nothing held equal | +0.5% | −2.1% to +3.2% |
| Same floor area | +7.6% | +5.7% to +9.5% |
| + same property type | +4.7% | +3.1% to +6.3% |
| + same build period | −0.7% | −2.8% to +1.4% |
| + same year of sale | −3.9% | −5.6% to −2.0% |
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 SK17
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| SK17 0 | 295 | +8% | too few | — |
| SK17 6 | 1,512 | +12% | −0.4% | −3.9% to +3.1% |
| SK17 7 | 1,054 | +5% | 0.0% | −3.0% to +3.1% |
| SK17 8 | 952 | −4% | −5.3% ▼ | −10.2% to −0.1% |
| SK17 9 | 1,798 | +15% | −1.4% | −4.4% to +1.6% |
▲ 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 SK17
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 18 | £3,036 |
| B | 861 | £2,906 |
| C | 1,335 | £2,361 |
| D | 2,227 | £2,330 |
| E | 865 | £2,284 |
| F | 239 | £2,553 |
| G | 66 | £3,187 |
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.