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Get started21 Helen Avenue is a three-bedroom semi-detached house in Feltham (TW14 9LA). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (September 2025) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since June 2015. Between certificates, window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 78).
Today's modelled estimate of £561,000 sits 51.2% above the 2015 sale of £371,000. On a £-per-square-foot basis, the last sale (£355/sq ft) was about 52% above the typical sold price in the postcode. Last changed hands 11 years ago, in September 2015.
21 Helen Avenue valuation sits well clear of the typical sold price in this postcode.
£561,000
Modelled from EPC, postcode comparables.
£371,000
Recorded with HM Land Registry.
Price per m²
£3,825
Street avg £3,732
Floor Area
97 m²
Street avg 94 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
Rail-style transport is unusually close for this postcode.
Crime
11/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Harlington Road East — bus stop.

Daytime· 07:00 – 23:00
54.1dB

Changes detected from historical EPC data
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
28 September 2015Most recent
£371,000
Median price across the last 5 sales in TW14 9LA: £475,000 (2025–2023).
CO₂ Emissions
3.7 t/year
Street avg 4.4 t/year
TW14 9XF
Closest school
0.7 km
Sparrow Farm Primary School. 30 schools nearby.
Night-time· 23:00 – 07:00
45.8dB
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