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Get started21 Chessholme Court is a two-bedroom mid-terrace house in Sunbury On Thames (TW16 7ES). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 2012 onwards and council tax band C. At 54 m² this is the 19th smallest of 26 units on EPC record in the building, where floor areas span 25–62 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (May 2022) shows a C (score 77), near the top of the C band. The rating has held steady at C across 2 certificates since April 2012. Between certificates, wall efficiency went from Good to Very Good; while window efficiency dropped from Good to Very Poor and hot-water efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 85). Main heating runs on electricity.
Sale prices here have outpaced England HPI: 3.2% per year against 0% for the wider region. Today's modelled estimate of £246,000 is 17.1% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£361/sq ft) was about 33.9% above the typical sold price in the postcode. Last sold in January 2015, so it's been off the market for around 11 years.
21 Chessholme Court valuation sits well clear of the typical sold price in this postcode.
£246,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 11 years.
£210,000
Growth on file: 3.2% per year over 11 years.
21 Chessholme Court outperforms the street on co₂ emissions by a wide margin.
Price per m²
£3,889
Street avg £3,820
Floor Area
54 m²
Street avg 47 m²
Habitable Rooms
3 rooms
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Windmill Road — bus stop.

Daytime· 07:00 – 23:00
54.7dB

Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation improved
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
5 January 2015Most recent
£210,000
+40.0%over 10 years15 April 2004
£150,000
Median price across the last 5 sales in TW16 7ES: £202,500 (2025–2023).
15 Chessholme Court Scotts Avenue Sunbury On Thames
Sold Aug 2025
16 Chessholme Court Scotts Avenue Sunbury On Thames
Sold Jul 2024
17 Chessholme Court Scotts Avenue Sunbury On Thames
Sold Nov 2023
7 Chessholme Court Scotts Avenue Sunbury On Thames
Sold Jul 2023
14 Chessholme Court Scotts Avenue Sunbury On Thames
Sold Mar 2021
Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.3 t/year
TW16 7BL
Closest school
0.7 km
Meadhurst Primary School. 23 schools nearby.
Night-time· 23:00 – 07:00
46.0dB
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