How energy efficient is Cornwall House 55 57, Flat 23, High Street, SL1 1DZ?

The current EPC rating for Cornwall House 55 57, Flat 23, High Street, SL1 1DZ is D with a score of 57 out of 100, lodged in April 2026. It has improved from a E recorded in May 2016. The assessor estimates the property could reach a C. Source: EPC Register.

What is the floor area of Cornwall House 55 57, Flat 23, High Street, SL1 1DZ?

Cornwall House 55 57, Flat 23, High Street, SL1 1DZ has a recorded floor area of 48 m² (517 sq ft). That makes it about 11% smaller than the median EPC-recorded property in SL1 1DZ. Source: EPC Register.

How is Cornwall House 55 57, Flat 23, High Street, SL1 1DZ heated?

The latest EPC at Cornwall House 55 57, Flat 23, High Street, SL1 1DZ records electricity as the main heating fuel. Source: EPC Register.

Where is Cornwall House 55 57, Flat 23, High Street, SL1 1DZ located?

Cornwall House 55 57, Flat 23, High Street, SL1 1DZ sits in Slough. It falls within the SL1 postcode district.

How safe is the area around Cornwall House 55 57, Flat 23, High Street, SL1 1DZ?

Police records around Cornwall House 55 57, Flat 23, High Street, SL1 1DZ show an average of 656 reported crimes per month over the last 15 months. Violent crime makes up roughly 38% of reports, the most common category. The overall trend is falling (11% versus the prior period). Source: Police UK.

Which schools serve Cornwall House 55 57, Flat 23, High Street, SL1 1DZ?

The closest primary school to Cornwall House 55 57, Flat 23, High Street, SL1 1DZ is St Mary's Church of England Primary School (919m), one of 19 primaries within walking distance. The closest secondary is Slough and Eton Church of England Business and Enterprise College (797m), with 13 secondaries in the surrounding area.

What transport links are near Cornwall House 55 57, Flat 23, High Street, SL1 1DZ?

The closest bus stop to Cornwall House 55 57, Flat 23, High Street, SL1 1DZ is Wellington Street Stop F, 40m away. The nearest bus option is Brunel Way, 326m away.

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Cornwall House 55 57, Flat 23, High Street, Slough, SL1 1DZ

Habitable rooms

From EPC

Floor area

48 m²

517 sq ft

Energy rating

Score 57

Tenure

Private Rental

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Overview

About Cornwall House 55 57

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

Cornwall House 55 57 is a property in Slough (SL1 1DZ). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to 1976-1982. The latest certificate (April 2026) shows a D (score 57), a step below the typical UK home. When first surveyed in May 2016 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition. At 48 m² this is the 9th 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.

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Everything you need to know about Cornwall House 55 57

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the areaLarger development activity nearby

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Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Cornwall House 55 57's carbon output is low for the local stock.

Current Certificate(1 of 2)

Apr 2026

EPC Rating

D57

Main Heating

Electric

Main Fuel

Electric

Hot Water

Very Poor

Windows

Poor

CO2 Emissions

0.7 t/year

Occupancy

Rented

Certificate validity

Valid until 24 April 2036

9 years remaining

Property Improvements

Changes detected from historical EPC data

Apr 2026from May 2016

EPC improved fromE44toD57

Windows

SecondaryFull Double

Windows upgraded, improving insulation

Get a survey for this property

Level 3 Building Survey

Late 20th century2nd Floor FlatEPC DNo mains gas

Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.

From £820 · Includes VAT

Planning

Planning history

Applications and permits filed against Cornwall House 55 57, Flat 23, High Street, Slough, SL1 1DZ, sourced from the PlanIt planning register.

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.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

Cornwall House 55 57 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£196,000

Modelled from EPC, postcode comparables.

See how we calculated this

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).

Nearby sales in SL1 1DZ

On the street

Versus other High Street homes

Four headline reads against 54 similar flats on this street, drawn from the latest EPC and Land Registry data.

Floor Area for Cornwall House 55 57 lags the street by a wide margin.

EPC Rating

57 (D)

Street avg 56 (D)

On par

Floor Area

48 m²

Street avg 61 m²

Strongly below

CO₂ Emissions

0.7 t/year

Street avg 2.3 t/year

Strongly above

Habitable Rooms

2 rooms

Street avg 3 rooms

Below

Before you decide

Everything you need to know about Cornwall House 55 57

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around SL1 1DZ from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

53.7dB

Low

Night-time road noise heatmap for SL1 1DZ

Night-time· 23:00 – 07:00

44.4dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Cornwall House 55 57, Flat 23, High Street, Slough, SL1 1DZ. Each answer is also embedded as structured data for search engines.