21a, Flat 1, Prince Of Wales Road, Sutton, SM1 3PE
About 21a
21a is a semi-detached house in Sutton (SM1 3PE). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (September 2017) shows a C (score 70). When first surveyed in February 2012 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Good to Very Good.
4 planning records sit against the property, 3 approved, 1 refused. Past consents include a loft conversion and an extension, meaningful when judging how the property has evolved. Across 2007–2018, sale prices on this property compounded at -1.5% per year. Today's modelled estimate of £370,000 is 15.6% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£551/sq ft) was about 73.4% above the typical sold price in the postcode. At 54 m² it's 26% smaller than the typical home in the postcode (73 m² median across 41 EPCs). Sold July 2018 for £320,000.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Wall insulation improved
Low energy lighting percentage decreased
Heating controls changed
Cavity wall insulation installed
Floor insulation added or improved
More low energy lighting installed
Heating controls upgraded for better temperature management
Planning history
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
- Jul 2017Loft ConversionFullIn report
Removal of existing rear dormer, alterations of roof line and formation of rear box dormer and installation of front rooflight.
- Reference
- C2017/77049
- Dec 2016ExtensionFullIn report
Extension: Single storey · Rear of property
Retention of single storey rear extension.
Retrospective- Reference
- C2016/75369
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's sale-price growth has lagged the wider UK trajectory across its history on file.
£370,000
Modelled from EPC, postcode comparables and a sale-price growth of -1.5% per year over 11 years.
£320,000
Growth on file: -1.5% per year over 11 years.
Sales timeline
29 July 2018Most recent
£320,000
-14.7%over 10 years20 September 2007
£375,000
Median price across the last 5 sales in SM1 3PE: £570,000 (2025–2024).
Nearby sales in SM1 3PE
69 Prince Of Wales Road, Sutton, SM1 3PE
Sold Jan 2025
£640,0009 Prince Of Wales Road, Sutton, SM1 3PE
Sold Dec 2024
£702,00027 Prince Of Wales Road, Sutton, SM1 3PE
Sold May 2024
£431,00029 Prince Of Wales Road, Sutton, SM1 3PE
Sold Apr 2024
£570,00017a, Prince Of Wales Road, Sutton, SM1 3PE
Sold Feb 2023
£270,000
Versus other Prince Of Wales Road homes
On habitable rooms, 21a runs well behind the street norm.
Price per m²
£5,926
Street avg £5,276
Floor Area
54 m²
Street avg 63 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.0 t/year
Street avg 2.6 t/year
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Muschamp Road Carshalton — bus stop.
Closest school
0.3 km
Greenshaw High School. 43 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
50.6dB

Night-time· 23:00 – 07:00
40.3dB







