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About 20b
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
20b is an end-of-terrace house in London (NW2 4AJ). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1930-1949 and council tax band C. At 46 m² this is the 6th smallest of 12 units on EPC record in the building, where floor areas span 20–92 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (March 2025) shows a C (score 75), near the top of the C band. When first surveyed in December 2008 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 81).
At 46 m² it sits well below the postcode median (73 m² across 19 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 74% of similar EPCs). On a £-per-square-foot basis, the last sale (£661/sq ft) was about 79.2% above the typical sold price in the postcode. Sold February 2020 for £327,500.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
20b's carbon output is low for the local stock.
Current Certificate(1 of 3)
Mar 2025
EPC Rating
A
B
C
C75
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
1.5 t/year
Occupancy
Owner Occupied
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
Current estimate
See how we calculated this£337,000
Modelled from EPC, postcode comparables.
Last sold (2020)
£327,500
Recorded with HM Land Registry.
Sales timeline
Versus other James Avenue homes
Four headline reads against 14 similar flats on this street, drawn from the latest EPC and Land Registry data.
20b is notably below the street on years held.
Price per m²
£7,120
Street avg £3,949
Floor Area
46 m²
Street avg 57 m²
Habitable Rooms
2 rooms
Street avg 3 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 London district page.
Rail-style transport is unusually close for this postcode.
Crime
14/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Dawson Road (NW2) — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around NW2 4AJ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
51.3dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 92 points of interest in total.
Beautiful places to visit nearby
Curated scenic spots within reach of this postcode, served by Beautifulplaces.ai. Photography and tagging come from their open dataset.
Common questions
The questions buyers, sellers and homeowners most often ask about 20b, James Avenue, London, NW2 4AJ. Each answer is also embedded as structured data for search engines.