Are you a property professional?Get qualified leads from motivated homeowners.
Get started16b, Basement Floor Flat, Cosway Street, London, NW1 5NR
About 16b
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
16b is a mid-terrace house in London (NW1 5NR). It has a recorded floor area of 68 m² (around 732 sq ft) and construction records dating it to before 1900. At 68 m² this is the 5th smallest of 6 units on EPC record in 16b, where floor areas span 40–74 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (October 2025) shows a C (score 70). When first surveyed in November 2015 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor; while window efficiency dropped from Average to Very Poor and lighting dropped from Very Good to Good.
At 68 m² the property is well over the postcode median (41 m² across 56 EPCs), placing it in the larger end of the local stock.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Oct 2025
EPC Rating
A
B
C
C70
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
2.2 t/year
Occupancy
Rented
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
16b 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£724,000
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.
Versus other Cosway Street homes
Four headline reads against 56 similar flats on this street, drawn from the latest EPC and Land Registry data.
Floor Area for 16b runs comfortably ahead of the street norm.
EPC Rating
70 (C)
Street avg 70 (C)
Floor Area
68 m²
Street avg 46 m²
CO₂ Emissions
2.2 t/year
Street avg 1.9 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 London district page.
Rail-style transport is unusually close for this postcode.
Crime
18/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Old Marylebone Road — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around NW1 5NR from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
62.4dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 89 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 16b, Basement Floor Flat, Cosway Street, London, NW1 5NR. Each answer is also embedded as structured data for search engines.