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Get started20a, Northwick Avenue, Harrow, HA3 0AB
4 planning records
About 20a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
20a is a four-bedroom detached house in Harrow (HA3 0AB). It has a recorded floor area of 147 m² (around 1582 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (October 2016) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it D (May 2010); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Average to Good and main heating went from Average to Good. The recommended improvements would lift it to C (score 77), a 2-band jump. Other recorded features include a conservatory.
4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. At 147 m² it's 25.6% larger than the typical home in the postcode (117 m² median across 27 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). Today's modelled estimate of £940,000 is 19% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£499/sq ft) was about 79.9% above the typical sold price in the postcode. 9 years since the last transfer (May 2017).
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms4
- Dining roomYes
- Utility roomYes
- EnsuiteYes
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
20a's carbon output runs well above what efficient homes in the postcode produce.
Current Certificate(1 of 2)
Oct 2016
EPC Rating
A
B
C
D
E
E46
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
7.9 t/year
Occupancy
Owner Occupied
Planning history
Applications and permits filed against 20a, Northwick Avenue, Harrow, HA3 0AB, sourced from the PlanIt planning register.
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Jan 2018DemolitionOutlineGranted
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
20a valuation sits well clear of the typical sold price in this postcode.
Current estimate
See how we calculated this£940,000
Modelled from EPC, postcode comparables.
Last sold (2017)
£790,000
Recorded with HM Land Registry.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of 20a, 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 24 similar houses on this street, drawn from the latest EPC and Land Registry data.
On price per m², 20a stands well clear of the street.
Price per m²
£5,374
Street avg £3,371
Floor Area
147 m²
Street avg 151 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
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 20a, Northwick Avenue, Harrow, HA3 0AB. Each answer is also embedded as structured data for search engines.