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Get started20 Astell Street is a five-bedroom mid-terrace house in Kensington And Chelsea, London, London (SW3 3RU). It has a recorded floor area of 188 m² (around 2024 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (February 2015) shows an E (score 45), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 66). The latest certificate is from February 2015, so improvements made since then won't be reflected. The home occupies a cul-de-sac position.
Sale prices here have outpaced London HPI: 64% per year against 0% for the wider region. Today's modelled estimate of £3,321,000 sits 62% above the 2019 sale of £2,049,577. On a £-per-square-foot basis, the last sale (£1,013/sq ft) was about 46.4% above the typical sold price in the postcode. At 188 m² it sits well below the postcode median (270 m² across 17 EPCs), making it one of the more compact homes locally. 7 planning records sit against the property, 4 approved, 3 refused. Past consents include an extension, a basement excavation and new windows, meaningful when judging how the property has evolved. Most recent transfer: September 2019 at £2,049,577.
20 Astell Street's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 27 Feb 2025
A recent planning application at 20 Astell Street was refused — worth checking the council file.
Details required by conditions 5 (Professional management of engineering works), 8 (Sustainable Drainage Systems Strategy), 9 (Flood Risk) of planning permission 21/01111 (Construction of single-storey basement with outdoor courtyard and proposed light well. Erection of single-storey rear extension on ground floor and first floor with roof terrace on second floor. Replacement of rear window with domestic black aluminium framed double glazing with integrated shutters.(Amended CTMP))
20 Astell Street changed hands twice within eighteen months — unusual for the area.
£3,321,000
Modelled from EPC, postcode comparables and a sale-price growth of 64.0% per year over 1 year.
£2,049,577
Growth on file: 64.0% per year over 1 year.
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On epc rating, 20 Astell Street runs well behind the street norm.
Price per m²
£10,902
Street avg £10,825
Floor Area
188 m²
Street avg 279 m²
Habitable Rooms
6 rooms
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Markham Street — bus stop.

Daytime· 07:00 – 23:00
56.6dB

Details required by condition 3 (Materials - To match existing) 5 (Professional management of engineering works) 6 (Considerate Constructors Scheme (CCS)) 8 (Sustainable Drainage Systems Strategy) 9 (Flood Risk) 10 (Contamination - Unexpected) 11 (Shutters) of planning permission 21/01111 (Construction of single-storey basement with outdoor courtyard and proposed light well. Erection of single-storey rear extension on ground floor and first floor with roof terrace on second floor. Replacement of rear window with domestic black aluminium framed double glazing with integrated shutters.(Amended CTMP))
5 more applications for this property
Join to see all planning history.
5 September 2019Most recent
£2,049,577
+64.0%over 12 months14 September 2018
£1,250,000
Median price across the last 5 sales in SW3 3RU: £4,900,000 (2024–2014).
6 Astell Street Kensington And Chelsea London
Sold Jan 2024
34 Astell Street Kensington And Chelsea London
Sold Mar 2023
32 Astell Street Kensington And Chelsea London
Sold Aug 2022
18 Astell Street Kensington And Chelsea London
Sold Oct 2016
2 Astell Street Kensington And Chelsea London
Sold Dec 2014
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Street avg 8 rooms
CO₂ Emissions
10.0 t/year
Street avg 11.4 t/year
SW3 3RS
Closest school
0.2 km
Oratory Roman Catholic Primary School. 53 schools nearby.
Night-time· 23:00 – 07:00
46.6dB