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Get started21a is a six-bedroom semi-detached house in Shepperton (TW17 9DJ). It has a recorded floor area of 272 m² (around 2928 sq ft), construction records dating it to 1976-1982 and council tax band G. There is a swimming pool on the plot, uncommon for the area. The latest certificate (August 2020) shows a C (score 73). When first surveyed in September 2010 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 Average and hot-water efficiency went from Average to Good.
Sale prices here have outpaced England HPI: 3.3% per year against 0% for the wider region. Today's modelled estimate of £1,514,000 is 16.5% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£444/sq ft) was about 24.7% above the typical sold price in the postcode. 6 bedrooms is on the larger side for this postcode, where 3 is the typical count. Sold October 2020 for £1,300,000.
21a's carbon output runs well above what efficient homes in the postcode produce.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£1,514,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 18 years.
£1,300,000
Growth on file: 3.3% per year over 18 years.
On habitable rooms, 21a stands well clear of the street.
Price per m²
£4,779
Street avg £4,845
Floor Area
272 m²
Street avg 236 m²
Habitable Rooms
11 rooms
Street avg 8 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Shepperton Station Approach — bus stop.

Daytime· 07:00 – 23:00
53.1dB

Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
Cavity wall insulation installed
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
5 October 2020Most recent
£1,300,000
+42.9%over 8 years25 June 2012
£910,000
+23.8%over 9 years17 January 2003
£735,000
Median price across the last 5 sales in TW17 9DJ: £1,190,000 (2023–2021).
CO₂ Emissions
6.9 t/year
Street avg 9.0 t/year
TW17 9NP
Closest school
0.3 km
Thamesmead School. 16 schools nearby.
Night-time· 23:00 – 07:00
44.8dB
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