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Get startedJefferson House is a mid-terrace house in Kensington And Chelsea, London, London (SW3 1AX). It has a recorded floor area of 29 m² (around 312 sq ft) and construction records dating it to before 1900. At 29 m² this is the 19th smallest of 32 units on EPC record in Jefferson House, where floor areas span 12–229 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (March 2016) shows a C (score 69), just inside the C band. The rating has held steady at C across 3 certificates since November 2008. The latest certificate is from March 2016, so improvements made since then won't be reflected.
Sale prices here have outpaced London HPI: 8.7% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£1,538/sq ft) was about 80.7% above the typical sold price in the postcode. Last changed hands 9 years ago, in February 2017. Across the public record there are 5 sales, relatively high churn for a single property.
Jefferson House's carbon output is low for the local stock.
This certificate is over 10 years old and is no longer valid.Expired 07 Mar 2026
Price for Jefferson House has grown more than fourfold since the 1996 starting point.
£454,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.7% per year over 21 years.
£480,000
Growth on file: 8.7% per year over 21 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
Price per m²
£16,552
Street avg £14,525
Floor Area
29 m²
Street avg 42 m²
Habitable Rooms
1 rooms
Street avg 1 rooms
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Knightsbridge Station — tram stop.

Daytime· 07:00 – 23:00
58.3dB

Changes detected from historical EPC data
Changed to a more efficient fuel source
Heating controls changed
Are we missing something? Tell us about home improvements to help adjust your valuation.
20 February 2017Most recent
£480,000
+95.9%over 5 years9 May 2011
£245,000
+8.9%over 5 years16 January 2006
£225,000
+18.4%over 3 years1 November 2002
£190,000
+130.3%over 6 years30 January 1996
£82,500
Median price across the last 5 sales in SW3 1AX: £450,000 (2025–2022).
Jefferson House Flat 8 11 Basil Street Kensington And Chelsea London
Sold Jun 2025
Jefferson House Flat 32 11 Basil Street Kensington And Chelsea London
Sold May 2025
Jefferson House Flat 2 11 Basil Street Kensington And Chelsea London
Sold Jan 2024
Jefferson House Flat 21 11 Basil Street Kensington And Chelsea London
Sold Oct 2022
Jefferson House Flat 7 11 Basil Street Kensington And Chelsea London
Sold Sept 2022
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CO₂ Emissions
1.5 t/year
Street avg 1.8 t/year
SW3 1LS
Closest school
0.8 km
Holy Trinity CofE Primary School. 51 schools nearby.
Night-time· 23:00 – 07:00
49.5dB