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Get started12 Boniface Gardens is a three-bedroom semi-detached house in Harrow (HA3 6PH). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1930-1949 and council tax band C. Tenure is freehold. The latest certificate (June 2023) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 78). Our model identifies extension potential, subject to local planning policy.
2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £472,000 is 18% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£453/sq ft) was about 125.1% above the typical sold price in the postcode. Sold November 2023 for £400,000.
12 Boniface Gardens has been extended on multiple sides of the property across separate planning applications.
Extension: Side and rear of property
Single storey side to rear extension
12 Boniface Gardens valuation sits well clear of the typical sold price in this postcode.
£472,000
Modelled from EPC, postcode comparables.
£400,000
Recorded with HM Land Registry.
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Detailed AI analysis
12 Boniface Gardens outperforms the street on price per m² by a wide margin.
Price per m²
£4,878
Street avg £2,908
Floor Area
82 m²
Street avg 90 m²
Habitable Rooms
4 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
Bannister Playing Fields — bus stop.

Daytime· 07:00 – 23:00
52.7dB

Extension: Single storey · Rear of property
Single storey rear extension: 6.00 metres deep, 3.45 metres maximum height and 3.00 metres high to the eaves
1 November 2023Most recent
£400,000
Median price across the last 5 sales in HA3 6PH: £280,000 (2024–2011).
An AI-written breakdown of everything that matters
Detailed EPC data
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Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
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Street avg 4 rooms
CO₂ Emissions
4.3 t/year
Street avg 4.2 t/year
HA3 6EF
Closest school
0.2 km
Hatch End High School. 25 schools nearby.
Night-time· 23:00 – 07:00
42.9dB