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Get startedFlat 5, 1 William Street, Slough, SL1 1GZ
EPC B
About Flat 5
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
Flat 5 is a mid-terrace house in Slough (SL1 1GZ). It has a recorded floor area of 43 m² (around 463 sq ft). The latest certificate (January 2021) returns a B (score 81), comfortably above the UK average. At 43 m² this is the 21st 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.
Today's modelled estimate of £201,000 is 10.7% below the 2022 sale of £225,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. Sold January 2022 for £225,000. 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 5'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£201,000
Modelled from EPC, postcode comparables.
Last sold (2022)
£225,000
Recorded with HM Land Registry.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of Flat 5, 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.
Flat 5 is notably below the street on epc rating.
Price per m²
£5,233
Street avg £4,631
Floor Area
43 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 5, 1 William Street, Slough, SL1 1GZ. Each answer is also embedded as structured data for search engines.