21 Algar Road, Isleworth, TW7 7AD
About 21 Algar Road
21 Algar Road is a two-bedroom semi-detached house in Isleworth (TW7 7AD). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (July 2022) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in November 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good. The recommended improvements would lift it to B (score 87), a 2-band jump. Period features are noted in the property record. Our model identifies extension potential, subject to local planning policy.
5 planning records sit against the property, 1 approved, 3 refused. Past consents include an extension, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. At 74 m² it's 19.4% larger than the typical home in the postcode (62 m² median across 10 EPCs). Across 1997–2023, sale prices on this property compounded at 7.9% per year. On a £-per-square-foot basis, the last sale (£803/sq ft) was about 138.3% above the typical sold price in the postcode. Sold January 2023 for £640,000.
Know exactly what you're buying at 21 Algar Road
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
- Private gardenWest-facing
Building
- Period featuresYes
- RefurbishedYes
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Single glazing replaced with double or better glazing
More low energy lighting installed
Planning history
A a part-single-part-two-storey rear extension application was refused at 21 Algar Road in 2022.
- May 2022ExtensionFullIn report
Extension: Part single, part two storey · Rear of property
Demolition of existing rear and outrigger extension and erection of a part single part double storey rear extension
- Documents
- 8 docs on file
- Reference
- P/2022/0637
- Jan 2022DemolitionFullIn report
Extension: Part single, part two storey · Rear of property
Erection of part single part two storey rear extension following the demolition of the existing extensions
Extension- Documents
- 12 docs on file
- Reference
- P/2021/4499
We flagged 2 things worth checking at 21 Algar Road
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
Latest sale on 21 Algar Road was the highest on Land Registry record across the postcode.
£646,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 26 years.
£640,000
Growth on file: 7.9% per year over 26 years.
Sales timeline
13 January 2023Most recent
£640,000
+16.4%over 5 years17 February 2017
£550,000
+46.7%over 4 years16 August 2012
£375,000
+92.3%over 12 years1 September 1999
£195,000
+113.2%over 2 years15 May 1997
£91,450
Median price across the last 5 sales in TW7 7AD: £455,000 (2022–2012).
Nearby sales in TW7 7AD
Everything we know about 21 Algar Road, 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 Road homes
21 Algar Road outperforms the street on price per m² by a wide margin.
Price per m²
£8,649
Street avg £5,019
Floor Area
74 m²
Street avg 68 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.5 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
South Street (TW7) — bus stop.
Closest school
0.1 km
St Mary's Catholic Primary School, Isleworth. 44 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
43.6dB