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Get started30 Northwick Circle is a four-bedroom detached house in Harrow (HA3 0EE). It has a recorded floor area of 166 m² (around 1787 sq ft), construction records dating it to 1900-1929 and council tax band G. The latest certificate (October 2024) returns an A (score 102), the top energy band on the EPC scale. When first surveyed in August 2014 the rating was E, the property has climbed 4 bands since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Very Poor to Average and window efficiency went from Very Poor to Good. Our model identifies extension potential, subject to local planning policy. The home occupies a corner plot.
5 planning records sit against the property, 3 approved, 2 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. Today's modelled estimate of £1,300,000 is 18.2% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£616/sq ft) was about 38% above the typical sold price in the postcode. On the market in November 2014 and unlisted since — roughly 12 years.
30 Northwick Circle's carbon output is low for the local stock.
Extension: Single storey · Rear of property
Single storey front extension, rear infill extension and replacement of windows with new double doors to the side elevation of storage/gym building
30 Northwick Circle valuation sits well clear of the typical sold price in this postcode.
£1,300,000
Modelled from EPC, postcode comparables.
£1,100,000
Recorded with HM Land Registry.
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Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Dovedale Avenue — bus stop.

Daytime· 07:00 – 23:00
50.8dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Solar PV panels (80 kWp) installed
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Extension: Single storey · Side and rear of property
Proposed erection of a single storey front extension and single storey rear extension to dwellinghouse
3 more applications for this property
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20 November 2014Most recent
£1,100,000
Median price across the last 5 sales in HA3 0EE: £690,000 (2022–1996).
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HA3 0NQ
Closest school
0.5 km
St Gregory's Catholic Science College. 48 schools nearby.
Night-time· 23:00 – 07:00
40.7dB