21 Harrow Road, Carshalton, SM5 3QH
About 21 Harrow Road
21 Harrow Road is a five-bedroom semi-detached house in Carshalton (SM5 3QH). It has a recorded floor area of 150 m² (around 1615 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (December 2017) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78). Other recorded features include a conservatory. Records show the property has been extended at some point in its history.
At 150 m² the property is well over the postcode median (103 m² across 18 EPCs), placing it in the larger end of the local stock. 8 years since the last transfer (June 2018). Across the public record there are 4 sales, relatively high churn for a single property. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Across 1996–2018, sale prices on this property compounded at 8.6% per year. Today's modelled estimate of £729,000 is 14.8% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£393/sq ft) was about 33.9% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms5
- Bathrooms1
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- ConservatoryYes
Outside
- ParkingOff road
Building
- Previously extendedYes
- RefurbishedYes
Energy performance
EPC Rating
Planning history
Multiple extension applications run across more than a decade of planning history at 21 Harrow Road.
- Dec 2020ExtensionOutlineIn report
Extension: Single storey · Rear of property
Prior Approval for a single storey rear extension projecting from the rear of the original house by 6m.
- Agent
- ALIGN
- Documents
- 7 docs on file
- Reference
- DM2020/01756
- Mar 2008ConservatoryFullIn report
Extension: Rear of property
Erection of a conservatory at rear.
- Council
- C
Extension- Reference
- C2008/59095
We flagged 1 thing worth checking at 21 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
30-day money-back guarantee
Sales history & valuation
Price for 21 Harrow Road has grown more than fourfold since the 1996 starting point.
£729,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.6% per year over 22 years.
£635,000
Growth on file: 8.6% per year over 22 years.
Sales timeline
4 June 2018Most recent
£635,000
+108.2%over 14 years16 September 2003
£305,000
+83.2%over 3 years20 September 1999
£166,500
+58.6%over 3 years20 August 1996
£105,000
Median price across the last 5 sales in SM5 3QH: £665,000 (2025–2022).
Nearby sales in SM5 3QH
Versus other Harrow Road homes
21 Harrow Road outperforms the street on habitable rooms by a wide margin.
Price per m²
£4,233
Street avg £4,172
Floor Area
150 m²
Street avg 117 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
5.4 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







