21 Cowen Avenue, Harrow, HA2 0LU
About 21 Cowen Avenue
21 Cowen Avenue is a semi-detached house in Harrow (HA2 0LU). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1967-1975 and council tax band B. At 46 m² this is the 17th smallest of 71 units on EPC record in the building, where floor areas span 44–94 m². The building's EPC ratings span E to B across 71 units on file. The latest certificate (May 2015) shows a C (score 75), near the top of the C band. The latest certificate is from May 2015, so improvements made since then won't be reflected.
At 46 m² it's 24.6% smaller than the typical home in the postcode (61 m² median across 70 EPCs).
Know exactly what you're buying at 21 Cowen Avenue
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
21 Cowen Avenue's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 05 May 2025
EPC Rating
Planning history
21 Cowen Avenue has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 2 things worth checking at 21 Cowen Avenue
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
21 Cowen Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£224,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
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.
Median price across the last 5 sales in HA2 0LU: £270,000 (2020–2015).
Everything we know about 21 Cowen Avenue, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Cowen Avenue homes
CO₂ Emissions for 21 Cowen Avenue runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 70 (C)
Floor Area
46 m²
Street avg 61 m²
CO₂ Emissions
1.4 t/year
Street avg 2.3 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Similar properties nearby
1 Annan Court, Coles Crescent
HA2 0SW
1 Abbotts Court, Ashbourne Avenue
HA2 0LE
1 Berry Court, Juniper Close
HA2 0FN
1 Bipin Court, Swift Close
HA2 0FP
1 Abercorn Crescent
HA2 0PX
1 Crown Court, Crown Street
HA2 0HS
1 Cowen Avenue
HA2 0LU
1 Amber Court, Goldsmith Close
HA2 0EZ
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Grange Road (HA2) — bus stop.
Closest school
0.5 km
Roxeth Primary School. 35 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.8dB

Night-time· 23:00 – 07:00
40.6dB