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Get started12 Thorndown Lane is a three-bedroom semi-detached house in Windlesham (GU20 6DD). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (March 2013) shows a C (score 72). When first surveyed in April 2012 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Poor to Very Good and window efficiency went from Average to Good; while lighting dropped from Good to Average. The recommended improvements would push it to B (score 87). The latest certificate is from March 2013, so improvements made since then won't be reflected. Our model identifies extension potential, subject to local planning policy.
Sale prices here have outpaced England HPI: 12.7% per year against 0% for the wider region. Today's modelled estimate of £518,000 is 10.9% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£603/sq ft) was about 76.1% above the typical sold price in the postcode. At 72 m² it sits well below the postcode median (110 m² across 16 EPCs), making it one of the more compact homes locally. Sold March 2020 for £467,000. Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: an extension approved in 2016. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved.
12 Thorndown Lane's EPC is over a decade old — improvements since won't be reflected.
This certificate is over 10 years old and is no longer valid.Expired 27 Mar 2023
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Single storey · Rear of property
Sale price has at least doubled since 2012.
£518,000
Modelled from EPC, postcode comparables and a sale-price growth of 12.7% per year over 8 years.
£467,000
Growth on file: 12.7% per year over 8 years.
12 Thorndown Lane outperforms the street on co₂ emissions by a wide margin.
Price per m²
£6,486
Street avg £4,423
Floor Area
72 m²
Street avg 119 m²
Habitable Rooms
4 rooms
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Thorndown Lane — bus stop.

Daytime· 07:00 – 23:00
56.9dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Windows upgraded, improving insulation
Wall insulation improved
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
Erection of a single storey rear extension following the demolition of rear conservatory. (Amended Plan Rec'd 21/09/2016).
20 March 2020Most recent
£467,000
+41.5%over 4 years31 March 2015
£330,000
+4.8%over 1 year28 January 2014
£315,000
+70.3%over 1 year27 June 2012
£185,000
Median price across the last 5 sales in GU20 6DD: £515,000 (2025–2019).
Street avg 6 rooms
CO₂ Emissions
2.3 t/year
Street avg 4.8 t/year
GU20 6DQ
Closest school
1.5 km
Windlesham Village Infant School. 8 schools nearby.
Night-time· 23:00 – 07:00
49.5dB
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