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Get started17 Greenfern Avenue is a three-bedroom semi-detached house in Slough (SL1 6AQ). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (July 2020) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 87), a 2-band jump. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.
3 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Today's modelled estimate of £471,000 is 20.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£575/sq ft) was about 122.2% above the typical sold price in the postcode. At 63 m² it's 22.2% smaller than the typical home in the postcode (81 m² median across 23 EPCs). Last sale on file: £390,000 in April 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Recommended upgrades on file would lift this property by multiple EPC bands.
A a loft conversion application was refused at 17 Greenfern Avenue in 2024.
Side and rear of property
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£471,000
Modelled from EPC, postcode comparables.
£390,000
Recorded with HM Land Registry.
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Detailed AI analysis
17 Greenfern Avenue outperforms the street on price per m² by a wide margin.
Price per m²
£6,190
Street avg £3,668
Floor Area
63 m²
Street avg 96 m²
Habitable Rooms
4 rooms
Rail-style transport is unusually close for this postcode.
Crime
18/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Westlands Avenue — bus stop.

Daytime· 07:00 – 23:00
52.6dB

Demolition of existing rear extension and garage and Construction of a two storey rear and single storey side and rear extension.
Extension: Part single, part two storey · Side and rear of property
Construction of a single storey front, side and rear extension with 1no roof light, first floor side and part first floor rear extension, 1no new window to the first floor side elevation, loft conversion with rear dormer, 1no front roof light, internal alterations and associated works following the demolition of the existing rear extension and garage
1 more application for this property
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26 April 2021Most recent
£390,000
Median price across the last 5 sales in SL1 6AQ: £492,500 (2025–2020).
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Every application and decision on record
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Street avg 5 rooms
CO₂ Emissions
3.1 t/year
Street avg 4.1 t/year
SL1 6LX
Closest school
0.6 km
Our Lady of Peace Catholic Primary and Nursery School. 14 schools nearby.
Night-time· 23:00 – 07:00
44.2dB