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Get started27 Avebury is a four-bedroom end-of-terrace house in Slough (SL1 5SZ). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (April 2022) shows a C (score 71). When first surveyed in May 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 Very Poor to Very Good; while roof efficiency dropped from Good to Poor. The recommended improvements would push it to B (score 85).
Untraded for 17 years, with the last transfer in August 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Sale prices here have outpaced Slough HPI: 8.9% per year against 0% for the wider region. Today's modelled estimate of £446,000 sits 89.8% above the 2009 sale of £235,000. On a £-per-square-foot basis, the last sale (£240/sq ft) was about 19.4% below the postcode norm. At 91 m² the property is well over the postcode median (64 m² across 10 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved.
RETENTION OF AN EXISTING OUTBUILDING WITH FLAT ROOF
Sale price has at least doubled since 1997.
£446,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.9% per year over 12 years.
£235,000
Growth on file: 8.9% per year over 12 years.
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27 Avebury is notably below the street on price per m².
Price per m²
£2,582
Street avg £4,807
Floor Area
91 m²
Street avg 62 m²
Habitable Rooms
6 rooms
Street avg 3 rooms
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
0.2 km
Boarlands Close — bus stop.

Daytime· 07:00 – 23:00
53.3dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
More low energy lighting installed
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Extension: Single storey · Side of property
ERECTION OF A SINGLE STOREY SIDE EXTENSION AND CONVERSION OF GARAGE INTO A HABITABLE ROOM.
14 August 2009Most recent
£235,000
+152.7%over 11 years11 August 1998
£93,000
+12.1%over 1 year20 May 1997
£82,950
Median price across the last 5 sales in SL1 5SZ: £350,000 (2025–2017).
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Detailed EPC data
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Full planning history
Every application and decision on record
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CO₂ Emissions
3.0 t/year
Street avg 2.3 t/year
SL1 5PG
Closest school
0.3 km
The Westgate School. 25 schools nearby.
Night-time· 23:00 – 07:00
43.5dB