EPC rating and sold prices in PO20 (Chichester)
In postcode district PO20 (Chichester), homes rated EPC C or better sold for 1% less per square metre than D–G homes (median £3,819 vs £3,846, 7,327 sales). Like for like — same size, type, build period and year — the difference is −0.5% (95% range −2.1% to +1.1%): the EPC band itself is not reflected in sale prices here. 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 89 m² against 89 m² for D–G; the most common build period is 2012 onwards for C+ and 1967–1975 for D–G; 69% of C+ and 78% of D–G sales are detached or semi-detached houses.
| Comparing C+ with D–G homes… | Difference | 95% range |
|---|---|---|
| Raw gap per m² (medians) | −1% | — |
| Whole price, nothing held equal | −4.4% | −6.6% to −2.2% |
| Same floor area | −3.4% | −4.7% to −2.1% |
| + same property type | +0.2% | −1.1% to +1.4% |
| + same build period | +2.0% | +0.2% to +3.8% |
| + same year of sale | −0.5% | −2.1% to +1.1% |
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 PO20
| Sector | Sales | Raw gap | Like-for-like | 95% range |
|---|---|---|---|---|
| PO20 0 | 1,990 | +4% | +2.8% ▲ | +1.1% to +4.6% |
| PO20 1 | 351 | 0% | +0.1% | −4.9% to +5.3% |
| PO20 2 | 1,286 | +6% | 0.0% | −3.3% to +3.4% |
| PO20 3 | 1,136 | +4% | 0.0% | −2.8% to +2.8% |
| PO20 7 | 530 | −4% | −3.9% | −10.9% to +3.6% |
| PO20 8 | 1,712 | −12% | −2.0% | −5.3% to +1.5% |
| PO20 9 | 322 | −2% | +6.2% ▲ | +1.6% to +11.1% |
▲ 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 PO20
| EPC band (last certificate before sale) | Sales | Median £ per m² |
|---|---|---|
| A | 63 | £4,250 |
| B | 1,866 | £3,843 |
| C | 1,812 | £3,750 |
| D | 2,570 | £3,846 |
| E | 797 | £3,779 |
| F | 179 | £4,080 |
| G | 40 | £4,798 |
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.