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Get startedFlat 4, 12 Seymour Street, London, W1H 7HT
About Flat 4
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Flat 4 is a mid-terrace house in London (W1H 7HT). It has a recorded floor area of 75 m² (around 807 sq ft) and construction records dating it to before 1900. At 75 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 60–143 m². On EPC score it ranks first in the building (78 versus a worst of 71). The latest certificate (October 2025) shows a C (score 78), near the top of the C band. When first surveyed in February 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and lighting went from Very Poor to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
At 75 m² it sits well below the postcode median (119 m² across 10 EPCs), making it one of the more compact homes locally.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Flat 4's carbon output is low for the local stock.
Current Certificate(1 of 3)
Oct 2025
EPC Rating
A
B
C
C78
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
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.
Flat 4 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£1,080,000
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 Seymour Street homes
Four headline reads against 10 similar flats on this street, drawn from the latest EPC and Land Registry data.
On epc rating, Flat 4 stands well clear of the street.
EPC Rating
78 (C)
Street avg 64 (D)
Floor Area
75 m²
Street avg 109 m²
CO₂ Emissions
1.5 t/year
Street avg 3.8 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
8/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Portman Street — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around W1H 7HT 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 — 93 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 Flat 4, 12 Seymour Street, London, W1H 7HT. Each answer is also embedded as structured data for search engines.