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Get started21 Althea Street is a five-bedroom mid-terrace house in Hammersmith And Fulham, London, London (SW6 2RX). It has a recorded floor area of 153 m² (around 1647 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (March 2021) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in June 2012 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Average and hot-water efficiency went from Poor to Average. The recommended improvements would push it to C (score 80).
Sale prices here have outpaced London HPI: 8.1% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£911/sq ft) was about 76.3% above the typical sold price in the postcode. At 153 m² the property is well over the postcode median (60 m² across 30 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). 4 planning records sit against the property, 3 approved, 1 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Most recent transfer: August 2021 at £1,500,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
21 Althea Street has 2 separate extension applications on the council record.
Extension: Single storey
Erection of a single storey rear extension, to the side and rear of the existing back addition.
21 Althea Street has more than quadrupled in price since its earliest registered sale in 2001.
£1,542,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.1% per year over 20 years.
£1,500,000
Growth on file: 8.1% per year over 20 years.
21 Althea Street outperforms the street on price per m² by a wide margin.
Price per m²
£9,804
Street avg £8,044
Floor Area
153 m²
Street avg 146 m²
Habitable Rooms
5 rooms
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
William Morris Way/Sainsbury's — bus stop.

Daytime· 07:00 – 23:00
52.7dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
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Extension: Rear of property
Erection of a rear roof extension; erection of a rear extension over part of the existing back addition at second floor level; installation of two rooflights into front roofslope; replacement of three windows to front elevation at first floor level and one replacement window to rear elevation of back addition at first floor level.
2 more applications for this property
Join to see all planning history.
16 August 2021Most recent
£1,500,000
+93.5%over 8 years12 October 2012
£775,000
+150.0%over 11 years4 June 2001
£310,000
Median price across the last 5 sales in SW6 2RX: £605,000 (2025–2023).
13a Althea Street Hammersmith And Fulham London
Sold Jan 2025
17 Althea Street Hammersmith And Fulham London
Sold Nov 2024
15 Althea Street Hammersmith And Fulham London
Sold Oct 2024
1 Althea Street Hammersmith And Fulham London
Sold Aug 2024
15a Althea Street Hammersmith And Fulham London
Sold Sept 2023
Street avg 6 rooms
CO₂ Emissions
5.3 t/year
Street avg 6.0 t/year
SW6 2HJ
Closest school
0.4 km
Langford Primary School. 63 schools nearby.
Flood risk
Very low
From the Environment Agency.
Night-time· 23:00 – 07:00
43.4dB
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