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Get started17a, Cosway Street, Westminster, London, NW1 5NR
2 planning records
About 17a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
17a is a one-bedroom mid-terrace house in Westminster, London, London (NW1 5NR). It has a recorded floor area of 29 m² (around 312 sq ft), construction records dating it to 1900-1929 and council tax band C. At 29 m² this is the smallest unit on EPC record across the building (29–72 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (April 2013) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since April 2013. The latest certificate is from April 2013, so improvements made since then won't be reflected.
Held since November 2003 — that's 22 years off the open market, well above the local norm. At 29 m² it sits well below the postcode median (42 m² across 56 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include subdivision, meaningful when judging how the property has evolved. Today's modelled estimate of £488,000 is 35.3% above the 2003 sale price. On a £-per-square-foot basis, the last sale (£1,155/sq ft) was about 87.9% above the typical sold price in the postcode.
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
- Bedrooms1
- Open-plan layoutYes
- CloakroomYes
Outside
- Private garden
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
17a's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 Apr 2023
Planning history
Applications and permits filed against 17a, Cosway Street, Westminster, London, NW1 5NR, sourced from the PlanIt planning register.
Council records show a subdivision application — the property's legal arrangement has been altered.
- Aug 2004SubdivisionFullGranted
Conversion of existing ground and basement level maisonette into two separate flats, with new external stairs from street level to basement entrance on the front elevation.
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
17a valuation sits well clear of the typical sold price in this postcode.
Current estimate
See how we calculated this£488,000
Modelled from EPC, postcode comparables.
Last sold (2003)
£360,592
Recorded with HM Land Registry.
Sales timeline
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 17a lags the street by a wide margin.
Price per m²
£12,434
Street avg £10,755
Floor Area
29 m²
Street avg 47 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
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 17a, Cosway Street, Westminster, London, NW1 5NR. Each answer is also embedded as structured data for search engines.