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SE3 is a postcode district in the SE (South-East London) postcode area, covering 6.9 km². Prices, sales and comparisons below are for homes sold in the twelve months to July 2026, from HM Land Registry sales matched to their energy certificate.
In the twelve months to July 2026, homes sold in SE3 (Blackheath) went for a median £6,596 per square metre, -4.3% on the previous twelve months and -6.3% on five years earlier. The median price paid was £508,500, across 335 sales (813 in the twelve months before).
That is 3.1% above the median for the SE postcode area (£6,395) and 3.6% above London as a whole (£6,364), ranking SE3 97th of 219 London postcode districts by price per square metre and 15th of 28 in SE. Closest in price across London: KT3 New Malden (£6,635) and TW8 Brentford (£6,580).
57% of the homes sold were flats or maisonettes, the median home sold had 78 m² of floor space and 5% were new builds. Flats sold for a median £435,000 and houses for £711,240.
Of the 6 districts bordering SE3, 1 is dearer per square metre. The dearest is SE10 Greenwich at £7,000 and the cheapest SE18 Woolwich and Plumstead at £5,267.
| Median £/m² | 12-month change | |
|---|---|---|
| SE3 Blackheath | £6,596 | -4.3% |
| South-East London (SE) | £6,395 | -3.0% |
| London | £6,364 | -2.9% |
Each point is the median price per square metre of the homes sold in the twelve months to that month. Months with fewer than 30 sales in SE3 are left blank.
| Period | 12 months to | Median £/m² | Change to latest |
|---|---|---|---|
| Latest | Jul 2026 | £6,596 | |
| One year earlier | Jul 2025 | £6,893 | -4.3% |
| Five years earlier | Jul 2021 | £7,042 | -6.3% |
| First in the series | Feb 1995 | £1,171 | +463.3% |
Land Registry sales in SE3 matched to the home's energy certificate, the sales every figure on this page is computed from.
SE3's Location Premium is -11.1%: in CityDataLab's factor model fitted to July 2026, an otherwise identical home (same size, type, age and energy rating) is priced 11.1% less per square metre in SE3 than in a district at the average London district price level.
The model measures a district's location by its median price per m² over the previous twelve months, in standard deviations across London's postcode districts. SE3 sits 0.34 standard deviations below the average district. The Location Premium is the part of a home's price per m² the model puts down to that location; the rest depends on the home itself and on the market as a whole. How each factor's Premium has moved · Price a home with the property calculator.
Districts that share a border with SE3, dearest first.
| District | Median £/m², 12 months | 12-month change | Median price paid | Sales, 12 months | Vs SE3 |
|---|---|---|---|---|---|
| SE10 Greenwich | £7,000 | -6.4% | £495,000 | 425 | +6.1% |
| SE13 Lewisham | £6,291 | -1.8% | £425,150 | 433 | -4.6% |
| SE7 Charlton | £5,594 | -3.6% | £500,000 | 119 | -15.2% |
| SE12 Lee | £5,556 | +5.3% | £485,000 | 235 | -15.8% |
| SE9 Eltham | £5,344 | -1.6% | £461,000 | 513 | -19.0% |
| SE18 Woolwich and Plumstead | £5,267 | -1.2% | £415,000 | 532 | -20.1% |
Prices are HM Land Registry price paid data for homes sold in SE3, each matched by address to its MHCLG energy performance certificate for the floor area. Price per m² is the price paid divided by that floor area; medians are taken over the twelve months to the month shown, and districts, their postcode area and London are always compared over the same twelve months. Sales without a matched certificate, and non-residential and "other" sales, are not counted. Neighbouring districts are those sharing a border on the postcode district maps by Wikipedia contributors (CC BY-SA 3.0). See how CityDataLab's factor model works.