Basement Flat, 81 Thurlow Park Road, London, SE21 8JL
About Basement Flat
Basement Flat is a semi-detached house in London (SE21 8JL). It has a recorded floor area of 55 m² (around 592 sq ft) and construction records dating it to 1900-1929. The latest certificate (January 2018) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since September 2009. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to C (score 79).
At 55 m² it sits well below the postcode median (82 m² across 51 EPCs), making it one of the more compact homes locally. On a £-per-square-foot basis, the last sale (£726/sq ft) was about 129% above the typical sold price in the postcode. Sold April 2024 for £430,000.
Know exactly what you're buying at Basement Flat
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
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
Heating controls changed
Hot water efficiency decreased
More low energy lighting installed
Ventilation system changed
Heating controls changed
Wall insulation improved
More low energy lighting installed
Planning history
Basement Flat has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at Basement Flat
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
Basement Flat valuation sits well clear of the typical sold price in this postcode.
£472,000
Modelled from EPC, postcode comparables.
£430,000
Recorded with HM Land Registry.
Sales timeline
24 April 2024Most recent
£430,000
Median price across the last 5 sales in SE21 8JL: £720,000 (2025–2024).
Nearby sales in SE21 8JL
Apartment 2, 99 Thurlow Park Road, Lambeth, London, SE21 8JL
Sold Mar 2025
£755,000Apartment 6, 99 Thurlow Park Road, Lambeth, London, SE21 8JL
Sold Nov 2024
£730,000Flat 1, 81 Thurlow Park Road, London, SE21 8JL
Sold Aug 2024
£343,000Apartment 8, 99 Thurlow Park Road, Lambeth, London, SE21 8JL
Sold Jun 2024
£720,000Hieover, Flat 2, 101 Thurlow Park Road, Lambeth, London, SE21 8JL
Sold Apr 2024
£450,000
Everything we know about Basement Flat, 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 Thurlow Park Road homes
Price per m² for Basement Flat runs comfortably ahead of the street norm.
Price per m²
£7,818
Street avg £4,248
Floor Area
55 m²
Street avg 83 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.2 t/year
Street avg 2.7 t/year
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The neighbourhood at a glance
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
Lancaster Avenue West Dulwich — bus stop.
Closest school
0.4 km
The Elmgreen School. 63 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
54.3dB
Night-time· 23:00 – 07:00
45.5dB