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Get startedFlat 9, 1 William Street, Slough, SL1 1GZ
EPC B
About Flat 9
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Flat 9 is a mid-terrace house in Slough (SL1 1GZ). It has a recorded floor area of 46 m² (around 495 sq ft). The latest certificate (January 2021) returns a B (score 81), comfortably above the UK average. At 46 m² this is the 36th 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.
Sold December 2021 for £230,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Flat 9's carbon output is low for the local stock.
EPC Rating
A
B
B81
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.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
Current estimate
See how we calculated this£213,000
Modelled from EPC, postcode comparables.
Last sold (2021)
£230,000
Recorded with HM Land Registry.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of Flat 9, 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.
Years Held for Flat 9 runs comfortably ahead of the street norm.
Price per m²
£5,000
Street avg £4,635
Floor Area
46 m²
Street avg 49 m²
CO₂ Emissions
0.8 t/year
Street avg 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 9, 1 William Street, Slough, SL1 1GZ. Each answer is also embedded as structured data for search engines.