12a, Flat 4, Powis Street, London, SE18 6LF
About 12a
12a is a mid-terrace house in London (SE18 6LF). It has a recorded floor area of 71 m² (around 764 sq ft) and construction records dating it to 1900-1929. At 71 m² this is the 4th smallest of 6 units on EPC record in 12a, where floor areas span 47–83 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (July 2023) shows a C (score 73). The rating has held steady at C across 4 certificates since March 2011. Between certificates, window efficiency went from Very Poor to Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 81).
At 71 m² the property is well over the postcode median (50 m² across 10 EPCs), placing it in the larger end of the local stock.
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
Heating controls changed
Windows upgraded, improving insulation
Wall insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
12a has no planning applications on record.
But the area is active
18 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£352,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
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.
Median price across the last 1 sales in SE18 6LF: £2,450,000 (2026–2026).
Nearby sales in SE18 6LF
Versus other Powis Street homes
On floor area, 12a stands well clear of the street.
EPC Rating
73 (C)
Street avg 72 (C)
Floor Area
71 m²
Street avg 55 m²
CO₂ Emissions
2.2 t/year
Street avg 2.0 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
13/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Woolwich Arsenal DLR — tram stop.
Closest school
0.5 km
St Peter's Catholic Primary School. 39 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
56.1dB
Night-time· 23:00 – 07:00
47.0dB