21 Alder Close, Slough, SL1 5DQ
About 21 Alder Close
21 Alder Close is a two-bedroom end-of-terrace house in Slough (SL1 5DQ). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1996-2002 and council tax band D. The latest certificate (June 2022) shows a C (score 72). When first surveyed in June 2009 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 86). The home occupies a cul-de-sac position.
At 58 m² it's 20.8% larger than the typical home in the postcode (48 m² median across 31 EPCs). Across 1998–2023, sale prices on this property compounded at 5.9% per year. Today's modelled estimate of £393,000 is 10.7% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£569/sq ft) was about 102.8% above the typical sold price in the postcode. Sold May 2023 for £355,000.
What this property has
Inside
- Bedrooms2
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenRear
- GarageYes
- Cul-de-sacYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Floor insulation added or improved
More low energy lighting installed
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Planning history
21 Alder Close has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Alder Close has more than quadrupled in price since its earliest registered sale in 1998.
£393,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 25 years.
£355,000
Growth on file: 5.9% per year over 25 years.
Sales timeline
11 May 2023Most recent
£355,000
+16.4%over 7 years17 December 2015
£305,000
+68.5%over 6 years1 October 2009
£181,000
+7.1%over 5 years10 March 2004
£169,000
+98.8%over 5 years27 April 1998
£85,000
Median price across the last 5 sales in SL1 5DQ: £337,000 (2025–2023).
Versus other Alder Close homes
21 Alder Close is notably below the street on years held.
Price per m²
£6,121
Street avg £4,311
Floor Area
58 m²
Street avg 54 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.0 t/year
Street avg 2.4 t/year
Similar properties nearby
1 Berners Close
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1 Alder Close
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1 April Place, Mallard Drive
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1 Ashmount Crescent
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1 Abbey Close
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
18/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Lower Cippenham La — bus stop.
Closest school
0.4 km
Western House Academy. 25 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
52.9dB

Night-time· 23:00 – 07:00
43.4dB







