12a, Algar Close, Isleworth, TW7 7AQ
About 12a
12a is a two-bedroom mid-terrace house in Isleworth (TW7 7AQ). It has a recorded floor area of 55 m² (around 592 sq ft) and construction records dating it to 1900-1929. The latest certificate (December 2017) shows a C (score 70). When first surveyed in January 2014 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Good to Very Good. At 55 m² this is the 4th smallest of 21 units on EPC record in the building, where floor areas span 54–131 m². The building's EPC ratings span E to B across 21 units on file. The home occupies a cul-de-sac position.
Today's modelled estimate of £329,000 is 13.4% above the 2023 sale price. Sold September 2023 for £290,000. One historical planning record sits against the property in 2025.
Know exactly what you're buying at 12a
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
- Bedrooms2
- Bathrooms1
Outside
- ParkingOff street
- Cul-de-sacYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
A recent planning application at 12a was refused — worth checking the council file.
- Sept 2025OutbuildingFullIn report
Erection of garages on Algar Close
- Documents
- 8 docs on file
- Reference
- P/2025/1635
We flagged 2 things worth checking at 12a
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.
- Larger development activity nearby
- A planning decision worth checking
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Sales history & valuation
£329,000
Modelled from EPC, postcode comparables.
£290,000
Recorded with HM Land Registry.
Sales timeline
4 September 2023Most recent
£290,000
Median price across the last 5 sales in TW7 7AQ: £347,000 (2025–2021).
Nearby sales in TW7 7AQ
14 Algar Close, Isleworth, TW7 7AQ
Sold Feb 2025
£347,0004 Stainton Terrace, Algar Close, Isleworth, TW7 7AQ
Sold Oct 2024
£940,00016 Algar Close, Isleworth, TW7 7AQ
Sold Oct 2023
£267,0003 Stainton Terrace, Algar Close, Isleworth, TW7 7AQ
Sold Jun 2022
£850,0006 Algar Close, Isleworth, TW7 7AQ
Sold Jun 2021
£240,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
- A planning decision worth checking

Versus other Algar Close homes
12a outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,273
Street avg £5,246
Floor Area
55 m²
Street avg 56 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.1 t/year
Street avg 2.7 t/year
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Isleworth Library — bus stop.
Closest school
0.2 km
Worple Primary School. 45 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
52.1dB

Night-time· 23:00 – 07:00
43.4dB