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Get startedApartment 401, 3 Merchant Square, Westminster, London, W2 1AZ
EPC B
About Apartment 401
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Apartment 401 is a detached house in Westminster, London, London (W2 1AZ). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 2012 onwards and council tax band G. The latest certificate (March 2025) returns a high B (score 85), putting the home a stone's throw from an A rating. The rating has held steady at B across 2 certificates since July 2014. Between certificates, wall efficiency went from Average to Very Good; while window efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. Main heating runs on electricity. At 91 m² this is the 45th smallest of 79 units on EPC record in the building, where floor areas span 42–127 m². The building's EPC ratings span C to A across 79 units on file.
Today's modelled estimate of £1,362,000 is 19.4% below the 2018 sale of £1,690,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£1,725/sq ft) was about 43.8% above the typical sold price in the postcode. Most recent transfer: August 2018 at £1,690,000.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Apartment 401's carbon output is low for the local stock.
Current Certificate(1 of 2)
Mar 2025
EPC Rating
A
B
B85
C
D
E
F
G
Main Heating
—
Main Fuel
Electric
Hot Water
Good
Windows
Good
CO2 Emissions
0.8 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.
Current estimate
See how we calculated this£1,362,000
Modelled from EPC, postcode comparables.
Last sold (2018)
£1,690,000
Recorded with HM Land Registry.
Sales timeline
Versus other Merchant Square homes
Four headline reads against 78 similar flats on this street, drawn from the latest EPC and Land Registry data.
Apartment 401 outperforms the street on price per m² by a wide margin.
Price per m²
£18,571
Street avg £13,520
Floor Area
91 m²
Street avg 88 m²
Habitable Rooms
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
19/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Edgware Road — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around W2 1AZ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
63.1dB
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 Apartment 401, 3 Merchant Square, Westminster, London, W2 1AZ. Each answer is also embedded as structured data for search engines.