EPC rating and sold prices in NE66 (Northumberland)
In postcode district NE66 (Northumberland), homes rated EPC C or better sold for 7% more per square metre than D–G homes (median £2,359 vs £2,201, 3,432 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 5.4% less (95% range −7.9% to −2.9%). 1 of 3 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 103 m² against 92 m² for D–G; the most common build period is 2012 onwards for C+ and before 1900 for D–G; 68% of C+ and 59% 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 | +7.9% | +4.0% to +12.0% |
| Same floor area | +5.5% | +3.1% to +8.0% |
| + same property type | +3.0% | +0.6% to +5.4% |
| + same build period | −2.7% | −5.6% to +0.2% |
| + same year of sale | −5.4% | −7.9% to −2.9% |
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 NE66
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| NE66 1 | 1,521 | +20% | +0.6% | −3.0% to +4.3% |
| NE66 2 | 826 | +21% | +0.5% | −4.3% to +5.6% |
| NE66 3 | 816 | −10% | −7.3% ▼ | −12.9% to −1.3% |
| NE66 4 | 201 | +5% | too few | — |
| NE66 5 | 68 | +23% | too few | — |
▲ 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 NE66
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 37 | £2,939 |
| B | 768 | £2,470 |
| C | 1,030 | £2,197 |
| D | 967 | £2,171 |
| E | 428 | £2,275 |
| F | 158 | £2,277 |
| G | 44 | £2,088 |
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.