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Get started17 21 is a mid-terrace house in Kensington And Chelsea, London, London (SW3 4TD). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (April 2024) shows a D (score 56), a step below the typical UK home. When first surveyed in April 2014 the rating was E, the property has climbed 1 band since. The recommended improvements would push it to C (score 78).
Untraded for 21 years, with the last transfer in January 2005. At 89 m² the property is well over the postcode median (67 m² across 19 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £1,095,000 sits 160.7% above the 2005 sale of £420,000. On a £-per-square-foot basis, the last sale (£438/sq ft) was about 40.3% below the postcode norm.
17 21 valuation sits well clear of the typical sold price in this postcode.
£1,095,000
Modelled from EPC, postcode comparables.
£420,000
Recorded with HM Land Registry.
Everything we know about this property, compiled into one in-depth, downloadable report.
CO₂ Emissions for 17 21 lags the street by a wide margin.
Price per m²
£4,719
Street avg £17,280
Floor Area
89 m²
Street avg 77 m²
Habitable Rooms
3 rooms
Street avg 3 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
Royal Hospital Chelsea / Lower Sloane Street — bus stop.

Daytime· 07:00 – 23:00
57.5dB

Changes detected from historical EPC data
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19 January 2005Most recent
£420,000
Median price across the last 5 sales in SW3 4TD: £1,271,160 (2025–2019).
23 Sloane Court West Kensington And Chelsea London
Sold Feb 2025
23a Sloane Court West London
Sold Jun 2023
Flat 1 7 Sloane Court West London
Sold Jun 2021
11 13 Flat 3 Sloane Court West London
Sold May 2020
25 27 Sloane Court West Kensington And Chelsea London
Sold Aug 2019
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CO₂ Emissions
4.6 t/year
Street avg 3.4 t/year
SW3 4LH
Closest school
0.4 km
St Barnabas' CofE Primary School. 56 schools nearby.
Night-time· 23:00 – 07:00
48.6dB