Flat 6, 31 Dewar Street, Southwark, London, SE15 4JP
About Flat 6
Flat 6 is a one-bedroom semi-detached house in Southwark, London, London (SE15 4JP). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to 1983-1990 and council tax band B. At 43 m² this is the smallest unit on EPC record across the building (43–57 m²). The building's EPC ratings span D to B, with this unit at the top. On EPC score it ranks first in the building (81 versus a worst of 63). Other recorded features include notable views. The latest certificate (November 2020) returns a B (score 81), comfortably above the UK average. When first surveyed in August 2009 the rating was D, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Good and lighting went from Poor to Very Good.
At 43 m² it's 23.2% smaller than the typical home in the postcode (56 m² median across 31 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Last sale on file: £327,500 in May 2021. Across the public record there are 5 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1999–2021, sale prices on this property compounded at 9% per year. On a £-per-square-foot basis, the last sale (£708/sq ft) was about 137.4% above the typical sold price in the postcode. One historical planning record sits against the property in 2012.
Know exactly what you're buying at Flat 6
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
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Open-plan layoutYes
- EnsuiteYes
Outside
- Private gardenYes
- Parkingallocated
- Notable viewsYes
Energy performance
Flat 6 ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
More low energy lighting installed
Planning history
- Aug 2012RenovationFullIn report
Installation of 3 windows to property.
New Windows- Reference
- 12/AP/0961
We flagged 1 thing worth checking at Flat 6
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
Price for Flat 6 has grown more than fourfold since the 1999 starting point.
£327,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.0% per year over 22 years.
£327,500
Growth on file: 9.0% per year over 22 years.
Sales timeline
26 May 2021Most recent
£327,500
+9.2%over 6 years12 June 2014
£299,950
+80.2%over 4 years1 March 2010
£166,500
+18.9%over 6 years11 February 2004
£140,000
+180.0%over 4 years19 August 1999
£50,000
Median price across the last 5 sales in SE15 4JP: £703,000 (2025–2021).
Nearby sales in SE15 4JP
4 Dewar Street, Southwark, London, SE15 4JP
Sold Nov 2025
£775,000Flat 2, 29 Dewar Street, Southwark, London, SE15 4JP
Sold Mar 2025
£350,000Flat 9, 31 Dewar Street, Southwark, London, SE15 4JP
Sold Nov 2022
£332,00021 Dewar Street, Southwark, London, SE15 4JP
Sold Jul 2022
£960,0003 Dewar Street, Southwark, London, SE15 4JP
Sold Dec 2021
£703,000
Everything we know about Flat 6, 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 Dewar Street homes
Flat 6 outperforms the street on price per m² by a wide margin.
Price per m²
£7,616
Street avg £4,663
Floor Area
43 m²
Street avg 55 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
0.8 t/year
Street avg 1.8 t/year
Similar properties nearby
196a, Flat 1, Bellenden Road
SE15 4BW
195 197, Flat 1, Rye Lane, Southwark
SE15 4TP
11 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
12 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
19 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
10 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
14 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
18 Troy Town Flats, Peckham Rye, Southwark
SE15 4NS
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
0.1 km
Peckham Rye /East Dulwich Road — bus stop.
Closest school
0.0 km
Bellenden Primary School. 81 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
54.6dB

Night-time· 23:00 – 07:00
44.3dB