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Get started23 Boniface Gardens is a semi-detached house in Harrow (HA3 6PH). It has a recorded floor area of 116 m² (around 1249 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (December 2016) shows an E (score 53), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since April 2014. Between certificates, roof efficiency went from Poor to Good, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 84), a 3-band jump.
At 116 m² the property is well over the postcode median (82 m² across 19 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). One planning record on file: an extension approved in 2003. Past consents include an extension, meaningful when judging how the property has evolved.
23 Boniface Gardens's carbon output runs well above what efficient homes in the postcode produce.
23 Boniface Gardens has an approved rear extension on the planning record.
Extension: Rear of property
Certificate of lawful proposed development:single storey rear extension
23 Boniface Gardens has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£522,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
23 Boniface Gardens outperforms the street on floor area by a wide margin.
EPC Rating
53 (E)
Street avg 61 (D)
Floor Area
116 m²
Street avg 88 m²
CO₂ Emissions
6.4 t/year
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

Changes detected from historical EPC data
Hot water system upgraded
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Median price across the last 5 sales in HA3 6PH: £400,000 (2024–2013).
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Street avg 4.1 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
HA3 6JF
Closest school
0.2 km
Hatch End High School. 25 schools nearby.
Night-time· 23:00 – 07:00
42.9dB