13 Hardy House, Union Lane, Isleworth, TW7 6GU
About 13 Hardy House
13 Hardy House is a one-bedroom mid-terrace house in Isleworth (TW7 6GU). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2007-2011 and council tax band C. The latest certificate (February 2022) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 2 certificates since July 2010. Between certificates, window efficiency dropped from Good to Average. At 47 m² this is the 3rd smallest of 35 units on EPC record in the building, where floor areas span 46–97 m². The building's EPC ratings span C to B, with this unit at the top.
At 47 m² it sits well below the postcode median (72 m² across 34 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £154,000 is 24.4% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£245/sq ft) was about 15.2% above the typical sold price in the postcode. Last sale on file: £123,750 in July 2019.
Know exactly what you're buying at 13 Hardy House
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms1
- Bathrooms1
Energy performance
13 Hardy House's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Planning history
13 Hardy House has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 2 things worth checking at 13 Hardy House
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
£154,000
Modelled from EPC, postcode comparables.
£123,750
Recorded with HM Land Registry.
Sales timeline
8 July 2019Most recent
£123,750
Median price across the last 5 sales in TW7 6GU: £266,000 (2025–2022).
Nearby sales in TW7 6GU
11 Hardy House, Union Lane, Isleworth, TW7 6GU
Sold Oct 2025
£146,00017 Hardy House, Union Lane, Isleworth, TW7 6GU
Sold Mar 2025
£202,50022 Hardy House, Union Lane, Isleworth, TW7 6GU
Sold Sept 2024
£345,00020 Hardy House, Union Lane, Isleworth, TW7 6GU
Sold Dec 2022
£420,0006 Hardy House, Union Lane, Isleworth, TW7 6GU
Sold Mar 2022
£266,000
Everything we know about 13 Hardy House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Union Lane homes
13 Hardy House is notably below the street on floor area.
Price per m²
£2,633
Street avg £3,346
Floor Area
47 m²
Street avg 70 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.0 t/year
Street avg 0.6 t/year
Similar properties nearby
1 Douglas Bader House, 9 Gibson Close
TW7 6NE
1 Church Street
TW7 6BL
1 Bridge Wharf Road
TW7 6BS
1 Christabel Close
TW7 6EJ
1 Gisbey House, Union Lane
TW7 6GH
1 Hawkfield Court, Woodlands Grove
TW7 6NU
1 Chase Court, Amhurst Gardens
TW7 6AH
1 Gumley Gardens
TW7 6PW
The neighbourhood at a glance
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
Twickenham Road / West Middlesex Hospital — bus stop.
Closest school
0.2 km
The Smallberry Green Primary School. 43 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
52.5dB

Night-time· 23:00 – 07:00
44.0dB