Cedar House, Flat 1, 109 Thurlow Park Road, London, SE21 8JL
About Cedar House
Cedar House is a two-bedroom end-of-terrace house in London (SE21 8JL). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1900-1929 and council tax band D. At 61 m² this is the 5th smallest of 7 units on EPC record in Cedar House, where floor areas span 37–62 m². The building's EPC ratings span D to C, with this unit at the bottom. Period features are noted in the property record. The latest certificate (May 2018) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 73).
Held since August 2005 — that's 21 years off the open market, well above the local norm. Across 2002–2005, sale prices on this property compounded at 12.2% per year. Today's modelled estimate of £412,000 sits 292.4% above the 2005 sale of £105,000. On a £-per-square-foot basis, the last sale (£160/sq ft) was about 51.8% below the postcode norm. One planning record on file: new windows approved in 2025. Past consents include new windows, meaningful when judging how the property has evolved. At 61 m² it's 25.6% smaller than the typical home in the postcode (82 m² median across 51 EPCs).
Know exactly what you're buying at Cedar House
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
What this property has
Inside
- Bedrooms2
- Bathrooms1
Outside
- Private gardenYes
- ParkingAllocated
Building
- Period featuresYes
- RefurbishedYes
Energy performance
EPC Rating
Planning history
- May 2025RenovationFullIn report
Replacement of all existing windows, ground floor right flank elevation door with double glazed uPVC windows and a composite door.
- Agent
- Archway Building Consultancy
New Windows- Documents
- 12 docs on file
- Reference
- 25/00911/FUL
We flagged 1 thing worth checking at Cedar House
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
Cedar House's modelled value sits at over four times its earliest registered sale price (2002).
£412,000
Modelled from EPC, postcode comparables and a sale-price growth of 12.2% per year over 3 years.
£105,000
Growth on file: 12.2% per year over 3 years.
Sales timeline
30 August 2005Most recent
£105,000
+44.8%over 3 years13 June 2002
£72,500
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 Cedar House, 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 Cedar House lags the street by a wide margin.
Price per m²
£1,721
Street avg £4,538
Floor Area
61 m²
Street avg 83 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
3.3 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