EPC rating and sold prices in GU10 (Waverley)
In postcode district GU10 (Waverley), homes rated EPC C or better sold for 6% less per square metre than D–G homes (median £4,878 vs £5,199, 4,054 sales). Like for like — same size, type, build period and year — homes rated C or better sold for 3.0% less (95% range −4.6% to −1.3%). 0 of 5 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 112 m² against 121 m² for D–G; the most common build period is 2012 onwards for C+ and 1950–1966 for D–G; 74% of C+ and 83% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | −6% | — |
| Whole price, nothing held equal | −11.9% | −15.0% to −8.8% |
| Same floor area | −8.2% | −9.6% to −6.8% |
| + same property type | −5.1% | −6.4% to −3.8% |
| + same build period | −0.5% | −2.4% to +1.3% |
| + same year of sale | −3.0% | −4.6% to −1.3% |
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 GU10
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| GU10 1 | 1,223 | +4% | −3.2% | −6.9% to +0.6% |
| GU10 2 | 334 | −10% | −5.4% | −10.9% to +0.3% |
| GU10 3 | 567 | −8% | −1.7% | −6.2% to +2.9% |
| GU10 4 | 1,278 | −5% | −1.2% | −3.5% to +1.1% |
| GU10 5 | 652 | −9% | +0.5% | −3.6% to +4.7% |
▲ 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 GU10
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 71 | £4,936 |
| B | 781 | £4,851 |
| C | 926 | £4,891 |
| D | 1,578 | £5,158 |
| E | 558 | £5,215 |
| F | 121 | £5,714 |
| G | 19 | £5,385 |
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.