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Get started21 Harp Island Close is a one-bedroom mid-terrace house in Brent, London, London (NW10 0DF). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (October 2019) shows a C (score 80), near the top of the C band. When first surveyed in March 2009 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Average and lighting went from Average to Good. The recommended improvements would push it to B (score 82). Main heating runs on electricity. At 36 m² this is the 11th smallest of 51 units on EPC record in the building, where floor areas span 16–60 m². The building's EPC ratings span E to B across 51 units on file.
It hasn't traded since November 2006, a hold of 20 years that's notably long for the area. Sale prices here have outpaced London HPI: 12% per year against 0% for the wider region. Today's modelled estimate of £189,000 is 33.1% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£366/sq ft) was about 26.4% above the typical sold price in the postcode. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.
For a compact home of this size, this rating sits in the top tier locally.
Sale price has grown by over 3x since 1995.
£189,000
Modelled from EPC, postcode comparables and a sale-price growth of 12.0% per year over 11 years.
£142,000
Growth on file: 12.0% per year over 11 years.
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EPC Rating for 21 Harp Island Close runs comfortably ahead of the street norm.
Price per m²
£3,944
Street avg £3,863
Floor Area
36 m²
Street avg 42 m²
Habitable Rooms
2 rooms
Reported crime in the wider district is trending notably upward year-on-year.
Crime
11/mo
Rising year-on-year across the wider district.
Nearest stop
0.4 km
Quainton Street — bus stop.

Daytime· 07:00 – 23:00
54.8dB

Changes detected from historical EPC data
Hot water efficiency improved
Single glazing replaced with double or better glazing
Are we missing something? Tell us about home improvements to help adjust your valuation.
27 November 2006Most recent
£142,000
+255.0%over 11 years6 October 1995
£40,000
Median price across the last 5 sales in NW10 0DF: £215,000 (2025–2024).
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Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.3 t/year
NW10 0DY
Closest school
0.5 km
Wykeham Primary School. 53 schools nearby.
Flood risk
Medium
From the Environment Agency.
Night-time· 23:00 – 07:00
47.3dB