21a, Keston Road, Southwark, London, SE15 4JA
About 21a
21a is a mid-terrace house in Southwark, London, London (SE15 4JA). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1930-1949 and council tax band B. At 57 m² this is the 3rd smallest of 16 units on EPC record in the building, where floor areas span 40–177 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (September 2025) shows a C (score 69), just inside the C band. The rating has held steady at C across 3 certificates since December 2011. Between certificates, window efficiency went from Poor to Average; while lighting dropped from Very Good to Poor.
At 57 m² it sits well below the postcode median (90 m² across 18 EPCs), making it one of the more compact homes locally. One planning record on file: new windows approved in 2018. Past consents include new windows, meaningful when judging how the property has evolved.
Know exactly what you're buying at 21a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Low energy lighting percentage decreased
Hot water efficiency decreased
Single glazing replaced with double or better glazing
More low energy lighting installed
Planning history
- Aug 2018RenovationFullIn report
Replacement of existing front and rear elevation windows and one rear door, all to be uPVC double-glazed units.
- Agent
- M A Newsome & Co Ltd
New Windows- Documents
- 20 docs on file
- Reference
- 18/AP/2128
We flagged 1 thing worth checking at 21a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
21a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£484,000
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 5 sales in SE15 4JA: £680,000 (2025–2020).
Nearby sales in SE15 4JA
27b, Keston Road, London, SE15 4JA
Sold Oct 2025
£712,00039b, Keston Road, Southwark, London, SE15 4JA
Sold Sept 2023
£490,0001a, Keston Road, Southwark, London, SE15 4JA
Sold Dec 2022
£900,00031a, Keston Road, Southwark, London, SE15 4JA
Sold May 2022
£645,00039a, Keston Road, Southwark, London, SE15 4JA
Sold Jan 2020
£571,000
Everything we know about 21a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other Keston Road homes
On habitable rooms, 21a runs well behind the street norm.
EPC Rating
69 (C)
Street avg 62 (D)
Floor Area
57 m²
Street avg 68 m²
CO₂ Emissions
2.0 t/year
Street avg 3.2 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
11/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Oakhurst Grove — bus stop.
Closest school
0.1 km
St John's and St Clement's Church of England Primary School. 77 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
54.4dB
Night-time· 23:00 – 07:00
44.2dB