23a is a mid-terrace house in Wandsworth, London, London (SW8 3TS). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1900-1929 and council tax band C. At 54 m² this is the 6th smallest of 24 units on EPC record in the building, where floor areas span 46–72 m². The building's EPC ratings span G to C, with this unit at the top. The latest certificate (March 2021) shows a C (score 70).
Sale prices here have outpaced London HPI: 9.6% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£981/sq ft) was about 69.2% above the typical sold price in the postcode. One planning record on file: an extension approved in 2023. Past consents include an extension, meaningful when judging how the property has evolved. Sold January 2023 for £570,000.
Alterations including erection of a mansard roof extension (with French doors and safety railings) to the main rear roof; Erection of an extension above part of the two-storey back addition; Installation of replacement French doors to first floor rear roof terrace.
Price for 23a has grown more than fourfold since the 1995 starting point.
£531,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.6% per year over 28 years.
£570,000
Growth on file: 9.6% per year over 28 years.
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CO₂ Emissions for 23a runs comfortably ahead of the street norm.
Price per m²
£10,556
Street avg £8,830
Floor Area
54 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
Rail-style transport is unusually close for this postcode.
Crime
12/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Prairie Street — bus stop.

Daytime· 07:00 – 23:00
53.9dB

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Full planning data for 23a, Gambetta Street, Wandsworth, London, SW8 3TS
Every application and decision on this property and nearby, in full, in the report.
4 January 2023Most recent
£570,000
+1195.5%over 27 years28 February 1995
£44,000
Median price across the last 5 sales in SW8 3TS: £645,000 (2025–2023).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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CO₂ Emissions
1.9 t/year
Street avg 2.9 t/year
SW8 3EZ
Closest school
0.3 km
Heathbrook Primary School. 82 schools nearby.
Flood risk
Very low
From the Environment Agency.
Night-time· 23:00 – 07:00
44.4dB