Cornwall House 55 57, Flat 12, High Street, Slough, SL1 1DZ
About Cornwall House 55 57
Cornwall House 55 57 is a property in Slough (SL1 1DZ). It has a recorded floor area of 46 m² (around 495 sq ft) and construction records dating it to 2007-2011. The latest certificate (April 2026) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in May 2016 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Very Good to Good and lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 76). Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition. At 46 m² this is the 5th smallest of 55 units on EPC record in Cornwall House 55 57, where floor areas span 34–133 m². The building's EPC ratings span F to B across 55 units on file.
Everything you need to know about Cornwall House 55 57
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Cornwall House 55 57's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 20 April 2036
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
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 £820 · Includes VAT
Planning history
Cornwall House 55 57 has no planning applications on record.
But the area is active
12 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Cornwall House 55 57 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£200,000
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 3 sales in SL1 1DZ: £440,000 (2017–2016).
Versus other High Street homes
On floor area, Cornwall House 55 57 runs well behind the street norm.
EPC Rating
67 (D)
Street avg 56 (D)
Floor Area
46 m²
Street avg 61 m²
CO₂ Emissions
0.7 t/year
Street avg 2.3 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Everything you need to know about Cornwall House 55 57
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
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
0.0 km
Wellington Street Stop F — bus stop.
Closest school
0.8 km
Slough and Eton Church of England Business and Enterprise College. 32 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
53.7dB
Night-time· 23:00 – 07:00
44.4dB