4a, Horton Road, Colnbrook, Slough, SL3 0LN
About 4a
4a is a detached house in Colnbrook, Slough, Slough (SL3 0LN). It has a recorded floor area of 127 m² (around 1367 sq ft) and construction records dating it to 1996-2002. The latest certificate (May 2022) shows a C (score 76), near the top of the C band. When first surveyed in January 2017 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good and lighting went from Good to Very Good. The recommended improvements would push it to B (score 85).
At 127 m² the property is well over the postcode median (70 m² across 14 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Across 2005–2021, sale prices on this property compounded at 2.9% per year. Today's modelled estimate of £547,000 sits 56.3% above the 2021 sale of £350,000. On a £-per-square-foot basis, the last sale (£256/sq ft) was about 41.1% below the postcode norm. 4 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Sold June 2021 for £350,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
EPC Rating
Certificate validity
Valid until 19 May 2032
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
4 applications on record at 4a, Horton Road, Colnbrook, Slough, SL3 0LN
- May 2021ExtensionFullOutcome in report
Extension: Part single, part two storey · Side and rear of property
Construction of a single storey side extension, part two storey, part single storey rear extension and new vehicular access.
- Council
- East
- Documents
- 10 docs on file
- Reference
- P/09972/004
- More recent applications — locked
- PorchJun 2024Decision
- OutbuildingSept 2021Decision
+ 1 more application in the report
Unlock 4a, Horton Road, Colnbrook, Slough, SL3 0LN's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (4 on record)
- All 4 applications on this property in full, plus 5 notable nearby
- The 22 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£547,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 16 years.
£350,000
Growth on file: 2.9% per year over 16 years.
Sales timeline
17 June 2021Most recent
£350,000
+56.3%over 15 years11 October 2005
£224,000
Median price across the last 5 sales in SL3 0LN: £327,500 (2025–2011).
Versus other Horton Road homes
4a is notably below the street on price per m².
Price per m²
£2,756
Street avg £4,934
Floor Area
127 m²
Street avg 74 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.1 t/year
Street avg 3.1 t/year
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The neighbourhood at a glance
Crime
298/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Moreland Avenue — bus stop.
Closest school
0.6 km
Colnbrook Church of England Primary School. 12 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
50.1dB

Night-time· 23:00 – 07:00
44.4dB







