20 Mill Street, Colnbrook, Slough, SL3 0JJ
About 20 Mill Street
20 Mill Street is a two-bedroom mid-terrace house in Colnbrook, Slough, Slough (SL3 0JJ). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2025) shows a C (score 74). The recommended improvements would push it to B (score 89). Our model identifies extension potential, subject to local planning policy.
It changed hands recently, sold October 2025 for £294,000. At 58 m² it sits well below the postcode median (108 m² across 4 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Today's modelled estimate of £337,000 is 14.6% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£471/sq ft) was about 167.4% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Outside
- Private gardenRear
Building
- Extension potentialPossible
Energy performance
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
20 Mill Street has no planning applications on record.
But the area is active
6 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20 Mill Street valuation sits well clear of the typical sold price in this postcode.
£337,000
Modelled from EPC, postcode comparables.
£294,000
Recorded with HM Land Registry.
Sales timeline
16 October 2025Most recent
£294,000
Median price across the last 5 sales in SL3 0JJ: £270,000 (2020–1999).
Versus other Mill Street homes
Price per m² for 20 Mill Street runs comfortably ahead of the street norm.
Price per m²
£5,069
Street avg £2,357
Floor Area
58 m²
Street avg 121 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
1.8 t/year
Street avg 4.3 t/year
Similar properties nearby
1 Ashley Cottages, High Street, Colnbrook
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1 Dickens Place, Colnbrook
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1 Garden Cottages, High Street, Colnbrook
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1 Colne Cottages, Albany Park, Colnbrook
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1 Elbow Meadow, Old Bath Road, Colnbrook
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1 Bath Road Cottages, Old Bath Road, Colnbrook
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Star & Garter — bus stop.
Closest school
0.2 km
Colnbrook Church of England Primary School. 10 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
53.1dB

Night-time· 23:00 – 07:00
47.8dB







