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Get started21 Cook Road is a three-bedroom detached house in Aldbourne, Marlborough, Marlborough (SN8 2EG). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (August 2022) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2011. Between certificates, roof efficiency went from Good to Very Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 82), a 2-band jump. Other recorded features include notable views. Our model identifies extension potential, subject to local planning policy.
Sale prices here have outpaced England HPI: 3.2% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£465/sq ft) was about 57.1% above the typical sold price in the postcode. One planning record on file: an extension approved in 2026. Past consents include an extension, meaningful when judging how the property has evolved. At 90 m² it's 19.6% smaller than the typical home in the postcode (112 m² median across 17 EPCs). Most recent transfer: August 2023 at £450,000.
Recommended upgrades on file would lift this property by multiple EPC bands.
Roof alterations to side extension
21 Cook Road valuation sits well clear of the typical sold price in this postcode.
£481,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 12 years.
£450,000
Growth on file: 3.2% per year over 12 years.
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Detailed AI analysis
Price per m² for 21 Cook Road runs comfortably ahead of the street norm.
Price per m²
£5,000
Street avg £3,940
Floor Area
90 m²
Street avg 111 m²
Habitable Rooms
4 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
43.4dB

Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
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11 August 2023Most recent
£450,000
+45.2%over 11 years16 December 2011
£310,000
Median price across the last 5 sales in SN8 2EG: £533,000 (2025–2022).
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Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
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Street avg 5 rooms
CO₂ Emissions
3.8 t/year
Street avg 5.3 t/year
SN8 2DA
Alma Road — bus stop.
Closest school
0.6 km
St Michael's CofE Aided Primary. 2 schools nearby.
Night-time· 23:00 – 07:00
36.5dB