20 Allendale Close, Southwark, London, SE5 8SG
About 20 Allendale Close
20 Allendale Close is a two-bedroom mid-terrace house in Southwark, London, London (SE5 8SG). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (September 2019) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while window efficiency dropped from Good to Very Poor and hot-water efficiency dropped from Very Good to Average. The recommended improvements would lift it to B (score 87), a 2-band jump.
One planning record on file: an extension approved in 2009. Past consents include an extension, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). 2 bedrooms is on the smaller side for this postcode, where 4 is the typical count. Across 2007–2019, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £618,000 is 24.9% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£754/sq ft) was about 129.2% above the typical sold price in the postcode. Last sale on file: £494,750 in November 2019.
Know exactly what you're buying at 20 Allendale Close
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
- GarageYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
More low energy lighting installed
Planning history
20 Allendale Close has an approved single-storey rear extension on the planning record.
- Feb 2009ExtensionFullIn report
Extension: Single storey · Rear of property
Erection of a single storey ground floor rear extension and two velux windows to dwellinghouse, to provide additional residential accommodation
- Documents
- 4 docs on file
- Reference
- 08/AP/2433
We flagged 2 things worth checking at 20 Allendale Close
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.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
20 Allendale Close valuation sits well clear of the typical sold price in this postcode.
£618,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 12 years.
£494,750
Growth on file: 4.4% per year over 12 years.
Sales timeline
22 November 2019Most recent
£494,750
+67.7%over 11 years20 December 2007
£295,000
Median price across the last 5 sales in SE5 8SG: £430,000 (2025–2025).
Nearby sales in SE5 8SG
44 Allendale Close, Southwark, London, SE5 8SG
Sold Oct 2025
£387,00013 Allendale Close, Southwark, London, SE5 8SG
Sold Sept 2025
£625,00078 Allendale Close, Southwark, London, SE5 8SG
Sold Jun 2025
£675,00029 Allendale Close, Southwark, London, SE5 8SG
Sold May 2025
£380,00036 Allendale Close, Southwark, London, SE5 8SG
Sold Feb 2025
£430,000
Everything we know about 20 Allendale Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Allendale Close homes
Price per m² for 20 Allendale Close runs comfortably ahead of the street norm.
Price per m²
£8,111
Street avg £5,745
Floor Area
61 m²
Street avg 77 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
2.6 t/year
Street avg 2.6 t/year
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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
Coldharbour Lane — bus stop.
Closest school
0.3 km
Crawford Primary School. 98 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
55.8dB

Night-time· 23:00 – 07:00
46.7dB