SW3 Postcode Data
Property data for the SW3 postcode district covering Kensington and Chelsea. Sold prices, crime statistics, energy performance, and demographic insights, all from HM Land Registry, Police UK, and the EPC Register.
Quick answer
The average sale price in SW3 is £1,959,907 (median £810,000), based on 91 HM Land Registry transactions. Police UK recorded 1,066 crimes within a 1-mile radius in 2026-05.
Headline pricing in SW3 is well above the UK national average (England & Wales average ~£290k as of 2025).
Avg sale price
£1,959,907
91 sales
Median price
£810,000
Crime incidents
1,066
2026-05
Avg EPC score
n/a
Recent sold prices
Latest 30 property sales in the SW3 area, sourced from HM Land Registry Price Paid Data.
flat-maisonette
£1,510,132
87 sales
| Date | Address | Type | Price |
|---|---|---|---|
| Nov 2024 | FLAT 6, WASHINGTON HOUSE, BASIL STREET, LONDON | flat-maisonette | £3,850,000 |
| Oct 2024 | FLAT 7, BASIL MANSIONS, BASIL STREET, LONDON | flat-maisonette | £3,600,000 |
| Sept 2024 | FLAT 12, WASHINGTON HOUSE, BASIL STREET, LONDON | flat-maisonette | £5,700,000 |
| Jan 2024 | FLAT 11, BASIL MANSIONS, BASIL STREET, LONDON | flat-maisonette | £2,900,000 |
| Aug 2023 | FLAT 4B, BASIL MANSIONS, BASIL STREET, LONDON | flat-maisonette | £1,050,000 |
| Apr 2023 | 1, GLYNDE MEWS, LONDON | flat-maisonette | £3,925,000 |
| Oct 2022 | FLAT 4, WASHINGTON HOUSE, BASIL STREET, LONDON | flat-maisonette | £3,700,000 |
| Sept 2022 | FLAT 11, LINCOLN HOUSE, BASIL STREET, LONDON | flat-maisonette | £2,175,000 |
| Jul 2022 | FLAT 26, LINCOLN HOUSE, BASIL STREET, LONDON | flat-maisonette | £3,300,000 |
| Jun 2022 | FLAT 12, BASIL MANSIONS, BASIL STREET, LONDON | flat-maisonette | £5,550,000 |
| Mar 2021 | FLAT 4, COURT HOUSE, BASIL STREET, LONDON | flat-maisonette | £1,380,000 |
| Jan 2021 | FLAT 26, LINCOLN HOUSE, BASIL STREET, LONDON | flat-maisonette | £1,750,000 |
| Oct 2019 | FLAT 2, COURT HOUSE, BASIL STREET, LONDON | flat-maisonette | £1,310,000 |
| Jun 2019 | FLAT 18, BASIL MANSIONS, BASIL STREET, LONDON | flat-maisonette | £4,500,000 |
| Jan 2019 | FLAT 2, WASHINGTON HOUSE, BASIL STREET, LONDON | flat-maisonette | £3,110,000 |
Crime in SW3
1,066 reported crimes within a 1-mile radius of the postcode centroid in 2026-05, from Police UK data.
Anti Social Behaviour
248
Violent Crime
189
Other Theft
148
Shoplifting
114
Vehicle Crime
106
Area information
- Local authority
- Kensington and Chelsea, Lambeth, Westminster
- Country
- England
- Wards
- Brompton & Hans Town, Chelsea Riverside, Clapham Town
- Constituency
- Chelsea and Fulham
- Latitude
- 51.4894
- Longitude
- -0.1659
More for SW3
Typical property
What the typical SW3 property looks like
Area summary, buyer notes, researched facts
Sold prices tool
Full transaction history for SW3
HM Land Registry from 1995
Corporate freeholders
Companies registered in SW3
Live Companies House data + PSCs
EPC checker
Look up any SW3 address
Energy ratings + improvement options
Crime checker
Local breakdown for SW3
Police UK monthly data
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Get a Property ReportData sources & methodology
Sold prices: HM Land Registry Price Paid Data, the official UK government records updated monthly. Sample uses the 30 most recent registered transactions in the postcode area.
Crime: Police UK street-level crime data, covering a 1-mile radius from the SW3 postcode centroid for the most recent month available (typically 2 months behind). For Scottish postcodes we use Police Scotland recorded-crime counts published by the Scottish Government (2024-25), reported by council area.
EPC: opendatacommunities.org, the official Energy Performance Certificate register for England and Wales. Aggregate stats from up to 30 most recent certificates in the postcode. For Scottish postcodes we use Scottish EPC Register lodgements, aggregated to a council-level band distribution (Q2 2025 to Q1 2026). For Northern Ireland we use the NISRA Census 2021 EPC-band classification of every household, aggregated by council (Census 2021).
Area data: postcodes.io, open data from the Office for National Statistics.