13b, St Johns Road, Isleworth, TW7 6NB
About 13b
13b is a mid-terrace house in Isleworth (TW7 6NB). It has a recorded floor area of 37 m² (around 398 sq ft) and construction records dating it to 1991-1995. The latest certificate (July 2018) shows an E (score 43), well below the UK norm with real room to improve. Earlier certificates rated it C (February 2010); the latest reading is 2 bands lower. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity.
At 37 m² it's 19.6% smaller than the typical home in the postcode (46 m² median across 21 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One historical planning record sits against the property in 2023.
Know exactly what you're buying at 13b
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
Energy performance
13b sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Changed to a more efficient fuel source
Hot water system changed
More low energy lighting installed
Planning history
A recent planning application at 13b was refused — worth checking the council file.
- Sept 2023OutlineIn report
Certificate of lawfulness for the existing use of a self-contained flat at rear of 13 St John's Road
Retrospective- Documents
- 19 docs on file
- Reference
- P/2023/2511
We flagged 3 things worth checking at 13b
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
- A planning decision worth checking
30-day money-back guarantee
Sales history & valuation
13b has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£288,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in TW7 6NB: £221,000 (2022–2008).
Nearby sales in TW7 6NB
25b, St Johns Road, Isleworth, TW7 6NB
Sold Jun 2022
£200,00025a, St Johns Road, Isleworth, TW7 6NB
Sold Jun 2022
£221,000Flat A, 23 St Johns Road, Isleworth, TW7 6NB
Sold Jun 2022
£520,0001 Floriston Villas, St Johns Road, Isleworth, TW7 6NB
Sold Jan 2021
£1,00015a, St Johns Road, Isleworth, TW7 6NB
Sold Apr 2008
£240,000
Everything we know about 13b, 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
- A planning decision worth checking

Versus other St Johns Road homes
On co₂ emissions, 13b stands well clear of the street.
EPC Rating
43 (E)
Street avg 50 (E)
Floor Area
37 m²
Street avg 39 m²
CO₂ Emissions
2.7 t/year
Street avg 4.2 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Similar properties nearby
1 Church Street
TW7 6BL
1 Hardy House, Union Lane
TW7 6GU
1 Bridge Wharf Road
TW7 6BS
1 Bourne Close
TW7 6HD
1 Christabel Close
TW7 6EJ
1 Hawkfield Court, Woodlands Grove
TW7 6NU
1 Chase Court, Amhurst Gardens
TW7 6AH
1 Gisbey House, Union Lane
TW7 6GH
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
Isleworth Station / Rennels Way — bus stop.
Closest school
0.3 km
West Thames College. 47 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
53.6dB

Night-time· 23:00 – 07:00
43.3dB