EPC rating and sold prices in OX16 (Cherwell)
In postcode district OX16 (Cherwell), homes rated EPC C or better sold for 5% more per square metre than D–G homes (median £3,242 vs £3,077, 9,115 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 1.8% less (95% range −2.6% to −1.0%). 2 of 7 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 86 m² against 81 m² for D–G; the most common build period is 2012 onwards for C+ and 1950–1966 for D–G; 60% 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) | +5% | — |
| Whole price, nothing held equal | +10.9% | +9.2% to +12.6% |
| Same floor area | +4.4% | +3.4% to +5.4% |
| + same property type | +6.6% | +5.7% to +7.4% |
| + same build period | +0.4% | −0.5% to +1.4% |
| + same year of sale | −1.8% | −2.6% to −1.0% |
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 OX16
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| OX16 0 | 1,110 | +9% | −0.8% | −2.5% to +1.0% |
| OX16 1 | 2,686 | +7% | −0.4% | −1.8% to +1.0% |
| OX16 2 | 986 | −1% | −0.2% | −3.9% to +3.6% |
| OX16 3 | 696 | +10% | +2.5% ▲ | +0.5% to +4.6% |
| OX16 4 | 612 | −4% | −1.7% | −3.8% to +0.5% |
| OX16 5 | 381 | −3% | −6.4% ▼ | −11.1% to −1.5% |
| OX16 9 | 2,644 | +4% | +0.1% | −1.4% 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 OX16
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 76 | £3,670 |
| B | 2,787 | £3,385 |
| C | 2,814 | £3,036 |
| D | 2,736 | £3,116 |
| E | 609 | £2,965 |
| F | 81 | £2,777 |
| G | 12 | £2,514 |
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.