31 Harrow Road, Carshalton, SM5 3QH
About 31 Harrow Road
31 Harrow Road is a four-bedroom semi-detached house in Carshalton (SM5 3QH). It has a recorded floor area of 127 m² (around 1367 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (October 2018) shows a C (score 70). When first surveyed in February 2014 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and lighting went from Good to Very Good. The recommended improvements would push it to B (score 86). Our model identifies extension potential, subject to local planning policy.
One planning record on file: an extension approved in 2014. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. At 127 m² it's 23.2% larger than the typical home in the postcode (103 m² median across 18 EPCs). Its energy rating outperforms most of the postcode (better than 89% of similar EPCs). Across 1995–2022, sale prices on this property compounded at 8.4% per year. On a £-per-square-foot basis, the last sale (£490/sq ft) was about 71.5% above the typical sold price in the postcode. Sold February 2022 for £670,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Open-plan layoutYes
- Dining roomYes
- Utility roomYes
- CloakroomYes
- StudyYes
Outside
- Private gardenSouth-facing
- GarageYes
Building
- Extension potentialPossible
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
Planning history
- Oct 2014Loft ConversionOutlineIn report
Extension: Single storey · Side of property
Erection of a single storey side extension and conversion of loft space involving the formation of a dormer extension at rear and window at side.
Extension- Reference
- C2014/70237
We flagged 1 thing worth checking at 31 Harrow Road
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
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Sales history & valuation
31 Harrow Road has more than quadrupled in price since its earliest registered sale in 1995.
£732,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.4% per year over 26 years.
£670,000
Growth on file: 8.4% per year over 26 years.
Sales timeline
25 February 2022Most recent
£670,000
+67.5%over 7 years3 July 2014
£400,000
+400.0%over 18 years26 September 1995
£80,000
Median price across the last 5 sales in SM5 3QH: £665,000 (2025–2021).
Nearby sales in SM5 3QH
Versus other Harrow Road homes
On co₂ emissions, 31 Harrow Road stands well clear of the street.
Price per m²
£5,276
Street avg £4,111
Floor Area
127 m²
Street avg 118 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.9 t/year
Street avg 5.4 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
14/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Downside Road — bus stop.
Closest school
0.7 km
St Philomena's Catholic High School for Girls. 35 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
51.5dB

Night-time· 23:00 – 07:00
41.3dB







