3 Castle Mews, Harrow, HA1 1HP
About 3 Castle Mews
3 Castle Mews is a mid-terrace house in Harrow (HA1 1HP). It has a recorded floor area of 25 m² (around 269 sq ft) and construction records dating it to 2021. The latest certificate (May 2021) shows a C (score 77), near the top of the C band. The recommended improvements would lift it to A (score 98), a 2-band jump.
2 planning records sit against the property, 0 approved, 1 refused.
Know exactly what you're buying at 3 Castle Mews
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
3 Castle Mews's carbon output is low for the local stock.
EPC Rating
Planning history
A recent planning application at 3 Castle Mews was refused — worth checking the council file.
- Feb 2026ExtensionFullIn report
Extension: Rear of property
Two storey rear extension to units 6-8; First floor roof extension to units 1-8; External Alterations (subdivision of land for rear gardens for Units 6-8) (part retrospective)
Retrospective- Reference
- PL/0435/26
- Mar 2025ExtensionFullIn report
Extension: Single storey · Rear of property
Single storey rear extension to units 6-8; addition of roof to units 1-8
- Reference
- PL/0913/25
We flagged 1 thing worth checking at 3 Castle Mews
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
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Sales history & valuation
3 Castle Mews has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£258,000
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.
Everything we know about 3 Castle Mews, 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
Versus other Castle Mews homes
On floor area, 3 Castle Mews stands well clear of the street.
EPC Rating
77 (C)
Street avg 76 (C)
Floor Area
25 m²
Street avg 23 m²
CO₂ Emissions
0.8 t/year
Street avg 0.8 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
28/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Harrow Civic Centre / Harrow Mosque — bus stop.
Closest school
0.4 km
Saint Jerome Church of England Bilingual School. 42 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
52.7dB
Night-time· 23:00 – 07:00
41.1dB