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Get started297 Preston Road is an eight-bedroom semi-detached house in Harrow (HA3 0QQ). It has a recorded floor area of 186 m² (around 2002 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (November 2019) shows a D (score 55), a step below the typical UK home. When first surveyed in March 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Poor to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 81), a 2-band jump. Other recorded features include a self-contained annexe.
It hasn't traded since August 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Sale prices here have outpaced Harrow HPI: 6.2% per year against 0% for the wider region. Today's modelled estimate of £858,000 sits 76.9% above the 2007 sale of £485,000. On a £-per-square-foot basis, the last sale (£242/sq ft) was about 35.4% below the postcode norm. At 186 m² the property is well over the postcode median (85 m² across 24 EPCs), placing it in the larger end of the local stock. 8 bedrooms is on the larger side for this postcode, where 3 is the typical count. 6 planning records sit against the property, 2 approved, 4 refused. Past consents include partial demolition, HMO conversion and change of use to residential, meaningful when judging how the property has evolved.
297 Preston Road's carbon output runs well above what efficient homes in the postcode produce.
A partial demolition application was refused at 297 Preston Road in 2024.
Proposed demolition of rear shed and partial demolition and changes to fenestration of rear outbuilding and formation of patio to the rear of dwellinghouse
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£858,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.2% per year over 5 years.
£485,000
Growth on file: 6.2% per year over 5 years.
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Detailed AI analysis
Habitable Rooms for 297 Preston Road runs comfortably ahead of the street norm.
Price per m²
£2,608
Street avg £3,371
Floor Area
186 m²
Street avg 172 m²
Habitable Rooms
11 rooms
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Woodcock Hill — bus stop.

Daytime· 07:00 – 23:00
49.8dB

Changes detected from historical EPC data
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Proposed demolition of existing storage shed, partial demolition and changes to fenestration of rear outbuilding and formation of patio to rear of premises
4 more applications for this property
Join to see all planning history.
31 August 2007Most recent
£485,000
+38.6%over 5 years14 March 2002
£350,000
Median price across the last 5 sales in HA3 0QQ: £565,000 (2023–2021).
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Street avg 7 rooms
CO₂ Emissions
9.1 t/year
Street avg 7.5 t/year
HA3 0DX
Closest school
0.5 km
Preston Park Primary School. 46 schools nearby.
Night-time· 23:00 – 07:00
38.4dB