SW3 1AX — Kensington and Chelsea
Sold prices, broadband, crime and local data for the SW3 1AX postcode, UK.
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Sold house prices at SW3 1AX
| Date | Price | Address | Type |
|---|---|---|---|
| 20 Jun 2025 | £450,000 | Jefferson House, 11 Basil Street | Flat |
| 16 May 2025 | £1,500,000 | Jefferson House, 11 Basil Street | Flat |
| 22 Jan 2024 | £375,000 | Jefferson House, 11 Basil Street | Flat |
| 20 Sep 2023 | £226,950 | Jefferson House, 11 Basil Street | Flat |
| 21 Oct 2022 | £525,000 | Jefferson House, 11 Basil Street | Flat |
| 30 Sep 2022 | £580,000 | Jefferson House, 11 Basil Street | Flat |
| 12 Aug 2022 | £555,000 | Jefferson House, 11 Basil Street | Flat |
| 15 Jun 2022 | £325,000 | Jefferson House, 11 Basil Street | Flat |
| 26 May 2022 | £422,000 | Jefferson House, 11 Basil Street | Flat |
| 28 Mar 2022 | £435,000 | Jefferson House, 11 Basil Street | Flat |
Broadband at SW3 1AX
Superfast (30Mb+)
100%
Gigabit-capable
100%
Median download
—
Median upload
—
Figures are Ofcom availability data for this exact postcode. Use the checker above for a live lookup including mobile signal on all four networks.
Energy performance certificates at SW3 1AX
30 EPCs are registered at this postcode (England & Wales register, certificates lodged since 2012; older ones may have expired or been replaced).
| Property | Rating | Registered |
|---|---|---|
| Flat 3 Jefferson House | Band C | Feb 2026 |
| Flat 3 | Band C | Oct 2025 |
| Flat 32 | Band C | Sep 2024 |
| Flat 8 | Band C | Apr 2024 |
| Flat 34-35 Jefferson House 7-11 Basil Street | Band D | Sep 2023 |
| Flat 8 | Band D | Jun 2023 |
| Flat 11 | Band D | May 2023 |
| Flat 26 | Band D | May 2023 |
| Flat 21 | Band C | May 2022 |
| Flat 27 | Band D | Feb 2022 |
| Flat 24 Jefferson House | Band C | Aug 2020 |
| Flat 9 Jefferson House | Band C | Jul 2020 |
| Flat 28 Jefferson House | Band C | Nov 2019 |
| Flat 14 Jefferson House | Band D | Sep 2019 |
| Flat 15 Jefferson House | Band C | Jul 2019 |
Source: MHCLG Energy Performance of Buildings Data. Typical ratings for the wider district are on the SW3 area report.
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Contains HM Land Registry data © Crown copyright and database right 2026; crime data from police.uk; broadband data from Ofcom Connected Nations — Open Government Licence v3.0.