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Get started12 Dax Court is a two-bedroom semi-detached house in Sunbury On Thames (TW16 5QL). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1930-1949 and council tax band D. Tenure is freehold. The latest certificate (May 2023) 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 2013. Between certificates, roof efficiency went from Average to Good and lighting went from Good to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). At 53 m² this is the 10th smallest of 14 units on EPC record in the building, where floor areas span 46–56 m². The building's EPC ratings span E to C across 14 units on file. Other recorded features include a balcony.
Sale prices here have outpaced England HPI: 5.8% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£570/sq ft) was about 34.3% above the typical sold price in the postcode. Last sale on file: £325,000 in May 2022. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
12 Dax Court has more than tripled in price since its earliest registered sale in 1999.
£354,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.8% per year over 23 years.
£325,000
Growth on file: 5.8% per year over 23 years.
12 Dax Court outperforms the street on epc rating by a wide margin.
Price per m²
£6,132
Street avg £5,997
Floor Area
53 m²
Street avg 51 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
46.0dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
23 May 2022Most recent
£325,000
+10.2%over 7 years19 December 2014
£295,000
+19.0%over 1 year28 June 2013
£248,000
+181.8%over 14 years26 February 1999
£88,000
Median price across the last 5 sales in TW16 5QL: £327,500 (2025–2022).
15 Dax Court Thames Street Sunbury On Thames
Sold Jul 2025
3 Dax Court Thames Street Sunbury On Thames
Sold Jan 2025
9 Dax Court Thames Street Sunbury On Thames
Sold Feb 2023
6 Dax Court Thames Street Sunbury On Thames
Sold Oct 2022
11 Dax Court Thames Street Sunbury On Thames
Sold Nov 2021
CO₂ Emissions
2.2 t/year
Street avg 2.5 t/year
TW16 5JP
French Street — bus stop.
Closest school
0.2 km
Beauclerc Infant and Nursery School. 21 schools nearby.
Flood risk
Low
From the Environment Agency.
Night-time· 23:00 – 07:00
37.7dB
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