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Get startedFlat 18, 1 William Street, Slough, SL1 1GZ
EPC B
About Flat 18
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Flat 18 is a mid-terrace house in Slough (SL1 1GZ). It has a recorded floor area of 62 m² (around 667 sq ft). The latest certificate (January 2021) returns a B (score 84), comfortably above the UK average. At 62 m² this is the 44th smallest of 64 units on EPC record in the building, where floor areas span 36–62 m². The building's EPC ratings span C to B, with this unit at the top.
At 62 m² the property is well over the postcode median (43 m² across 63 EPCs), placing it in the larger end of the local stock. On a £-per-square-foot basis, the last sale (£317/sq ft) was about 32.4% below the postcode norm. Most recent transfer: March 2023 at £211,750.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Flat 18's carbon output is low for the local stock.
EPC Rating
A
B
B84
C
D
E
F
G
Main Heating
—
Main Fuel
—
Hot Water
Good
Windows
Very Good
CO2 Emissions
0.8 t/year
Occupancy
—
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£223,000
Modelled from EPC, postcode comparables.
Last sold (2023)
£211,750
Recorded with HM Land Registry.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of Flat 18, 1 William Street, Slough, SL1 1GZ
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Versus other William Street homes
Four headline reads against 63 similar flats on this street, drawn from the latest EPC and Land Registry data.
Price per m² for Flat 18 lags the street by a wide margin.
Price per m²
£3,415
Street avg £4,660
Floor Area
62 m²
Street avg 49 m²
CO₂ Emissions
0.8 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 Slough 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
Wellington Street stop E — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around SL1 1GZ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
53.8dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 61 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about Flat 18, 1 William Street, Slough, SL1 1GZ. Each answer is also embedded as structured data for search engines.