EPC rating and sold prices in CO15 (Tendring)
In postcode district CO15 (Tendring), homes rated EPC C or better sold for 7% more per square metre than D–G homes (median £2,750 vs £2,564, 9,501 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 3.6% more (95% range +2.2% to +5.1%). 4 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 71 m² against 75 m² for D–G; the most common build period is 1967–1975 for C+ and 1950–1966 for D–G; 59% of C+ and 79% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | +7% | — |
| Whole price, nothing held equal | +2.3% | −0.1% to +4.6% |
| Same floor area | +6.8% | +5.0% to +8.5% |
| + same property type | +15.9% | +14.3% to +17.4% |
| + same build period | +7.7% | +6.0% to +9.4% |
| + same year of sale | +3.6% | +2.2% to +5.1% |
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 CO15
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| CO15 1 | 1,385 | +1% | −4.8% ▼ | −7.5% to −2.0% |
| CO15 2 | 1,553 | +19% | +11.3% ▲ | +6.5% to +16.4% |
| CO15 3 | 1,449 | +11% | +2.5% | −0.7% to +5.8% |
| CO15 4 | 1,949 | +12% | +2.3% ▲ | +0.3% to +4.3% |
| CO15 5 | 1,839 | +12% | +4.5% ▲ | +2.2% to +6.9% |
| CO15 6 | 1,326 | +2% | +1.0% | −2.0% to +4.1% |
▲ 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 CO15
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 10 | £2,949 |
| B | 409 | £3,222 |
| C | 1,985 | £2,711 |
| D | 4,682 | £2,719 |
| E | 1,890 | £2,333 |
| F | 401 | £2,085 |
| G | 124 | £1,746 |
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.