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Get started41a is a semi-detached house in London (SW19 1BW). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (July 2025) shows a C (score 71). When first surveyed in September 2013 the rating was D, 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 lighting went from Very Poor to Good.
3 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 71 m² it's 22% smaller than the typical home in the postcode (91 m² median across 27 EPCs).
A a rear extension application was refused at 41a in 2022.
Extension: Single storey · Rear of property
ERECTION OF A SINGLE STOREY REAR EXTENSION
41a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£455,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
41a is notably below the street on habitable rooms.
EPC Rating
71 (C)
Street avg 64 (D)
Floor Area
71 m²
Street avg 67 m²
CO₂ Emissions
2.2 t/year
Street avg 3.0 t/year
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Haydons Road / Merton High Str — bus stop.

Daytime· 07:00 – 23:00
57.6dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Rear of property
APPLICATION FOR NON-MATERIAL AMENDMENTS TO PLANNING APPLICATION 21/P1194 FOR AMENDMENT TO INCREASE FOOTPRINT OF SINGLE STOREY REAR EXTENSION
1 more application for this property
Join to see all planning history.
Median price across the last 5 sales in SW19 1BW: £808,000 (2025–2024).
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Detailed EPC data
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Habitable Rooms
2 rooms
Street avg 3 rooms
Closest school
0.2 km
All Saints' CofE Primary School. 53 schools nearby.
Night-time· 23:00 – 07:00
47.6dB