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Get started40a, Northwick Avenue, Harrow, HA3 0AB
2 planning records
About 40a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
40a is a detached house in Harrow (HA3 0AB). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1930-1949 and council tax band C. At 79 m² this is the 3rd smallest of 28 units on EPC record in the building, where floor areas span 62–228 m². The building's EPC ratings span E to B across 28 units on file. The latest certificate (July 2022) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79).
At 79 m² it sits well below the postcode median (117 m² across 27 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 0 approved, 2 refused.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
EPC Rating
A
B
C
D
D60
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
4.0 t/year
Occupancy
Rented
Planning history
Applications and permits filed against 40a, Northwick Avenue, Harrow, HA3 0AB, sourced from the PlanIt planning register.
Council records show a subdivision application — the property's legal arrangement has been altered.
- Sept 2015SubdivisionFullRefuse Planning Permission
Conversion of existing ground floor flat to provide an additional self-contained studio flat
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
40a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
Current estimate
See how we calculated this£362,000
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.
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The complete analysis of 40a, Northwick Avenue, Harrow, HA3 0AB
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Versus other Northwick Avenue homes
Four headline reads against 8 similar flats on this street, drawn from the latest EPC and Land Registry data.
CO₂ Emissions for 40a lags the street by a wide margin.
EPC Rating
60 (D)
Street avg 66 (D)
Floor Area
79 m²
Street avg 71 m²
CO₂ Emissions
4.0 t/year
Street avg 3.3 t/year
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Harrow district page.
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
Northwick Avenue — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around HA3 0AB from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
52.0dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 69 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 40a, Northwick Avenue, Harrow, HA3 0AB. Each answer is also embedded as structured data for search engines.