23a, Flat 6, Upton Park, Slough, SL1 2DA
About 23a
23a is a semi-detached house in Slough (SL1 2DA). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 2007-2011 and council tax band C. At 109 m² this is the largest unit on EPC record across 23a (22–109 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (June 2025) shows a C (score 72). When first surveyed in August 2010 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good and main heating went from Poor to Average; while roof efficiency dropped from Good to Average. Main heating runs on electricity.
At 109 m² the property is well over the postcode median (43 m² across 95 EPCs), placing it in the larger end of the local stock.
Everything you need to know about 23a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Certificate validity
Valid until 8 June 2035
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
23a has no planning applications on record.
But the area is active
18 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
23a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£307,000
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.
Median price across the last 5 sales in SL1 2DA: £186,000 (2026–2024).
Nearby sales in SL1 2DA
Stoke House, Flat 3, 23 Upton Park, Slough, SL1 2DA
Sold Mar 2026
£186,000Flat 5, 43 Upton Park, Slough, SL1 2DA
Sold Jan 2026
£141,300Windsor House, Flat 3, 33 Upton Park, Slough, SL1 2DA
Sold Feb 2025
£199,950Windsor House, Flat 8, 33 Upton Park, Slough, SL1 2DA
Sold Feb 2025
£167,500Flat 6, 37 Upton Park, Slough, SL1 2DA
Sold Nov 2024
£199,950
Versus other Upton Park homes
On floor area, 23a stands well clear of the street.
EPC Rating
72 (C)
Street avg 67 (D)
Floor Area
109 m²
Street avg 43 m²
CO₂ Emissions
4.6 t/year
Street avg 2.2 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
Everything you need to know about 23a
The true value, the hidden risks and the full sale history, in one report.
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One time fee only - money back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
656/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Albert Street — bus stop.
Closest school
0.5 km
Slough and Eton Church of England Business and Enterprise College. 33 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
58.4dB
Night-time· 23:00 – 07:00
50.9dB