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Get startedFlat 4 is a semi-detached house in Harrow (HA3 7NH). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1967-1975 and council tax band B. At 42 m² this is the smallest unit on EPC record across the building (42–47 m²). On EPC score it ranks last in the building (71 versus a best of 77). The latest certificate (March 2023) shows a C (score 71). When first surveyed in October 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Very Good, hot-water efficiency went from Poor to Good and main heating went from Average to Good; while wall efficiency dropped from Good to Poor.
It hasn't traded since July 1996, a hold of 30 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £239,000 sits 425.3% above the 1996 sale of £45,500. On a £-per-square-foot basis, the last sale (£101/sq ft) was about 64.5% below the postcode norm. At 42 m² it sits well below the postcode median (78 m² across 29 EPCs), making it one of the more compact homes locally.
Flat 4's modelled value sits at over four times its earliest registered sale price (1996).
£239,000
Modelled from EPC, postcode comparables.
£45,500
Recorded with HM Land Registry.
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On price per m², Flat 4 runs well behind the street norm.
Price per m²
£1,083
Street avg £7,559
Floor Area
42 m²
Street avg 36 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Warham Road — bus stop.

Daytime· 07:00 – 23:00
52.3dB

Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Loft insulation upgraded to recommended levels
Heating controls upgraded for better temperature management
Are we missing something? Tell us about home improvements to help adjust your valuation.
30 July 1996Most recent
£45,500
Median price across the last 5 sales in HA3 7NH: £490,000 (2025–2019).
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CO₂ Emissions
1.6 t/year
Street avg 1.5 t/year
HA3 7AH
Closest school
0.4 km
Belmont School. 38 schools nearby.
Night-time· 23:00 – 07:00
41.1dB