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Get started7 Derby Avenue is a three-bedroom semi-detached house in Harrow (HA3 5JU). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (July 2024) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in August 2010 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 85), a 2-band jump.
Held since May 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 91 m² the property is well over the postcode median (56 m² across 20 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £530,000 sits 112% above the 2009 sale of £250,000. 3 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Recommended upgrades on file would lift this property by multiple EPC bands.
7 Derby Avenue has 3 separate extension applications on the council record.
Extension: Rear of property
Certificate of lawful development (proposed): single storey rear extension
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£530,000
Modelled from EPC, postcode comparables.
£250,000
Recorded with HM Land Registry.
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Detailed AI analysis
Price per m² for 7 Derby Avenue lags the street by a wide margin.
Price per m²
£2,747
Street avg £4,909
Floor Area
91 m²
Street avg 91 m²
Habitable Rooms
5 rooms
Street avg 5 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
Stanhope Avenue — bus stop.

Daytime· 07:00 – 23:00
52.3dB

Changes detected from historical EPC data
Hot water system changed
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Hot water system upgraded
Wall insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Single storey · Rear of property
Single storey rear extension: extending 4 metres beyond the original rear wall 3.090 Metres maximum height 2.910 Metres high to the eaves
1 more application for this property
Join to see all planning history.
28 May 2009Most recent
£250,000
Median price across the last 5 sales in HA3 5JU: £438,000 (2022–2017).
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CO₂ Emissions
3.4 t/year
Street avg 4.2 t/year
HA3 5DS
Closest school
0.5 km
Salvatorian Roman Catholic College. 30 schools nearby.
Night-time· 23:00 – 07:00
40.9dB