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8 Sidmouth Avenue, Isleworth, TW7 4DW

Extendable2 planning records
Property type
Mid terrace
Bedrooms
3
Bathrooms
2
Floor area
72 m²
780 sq ft
Energy rating
D
Score 67
Council tax
Band D
Tenure
Private Rental
Overview

About 8 Sidmouth Avenue

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

8 Sidmouth Avenue is a three-bedroom mid-terrace house in Isleworth (TW7 4DW). It has a recorded floor area of 72 m² (around 780 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (March 2012) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 69). The latest certificate is from March 2012, so improvements made since then won't be reflected. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.

2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 2006–2021, sale prices on this property compounded at 5.4% per year. On a £-per-square-foot basis, the last sale (£750/sq ft) was about 70.2% above the typical sold price in the postcode. At 72 m² it's 18.6% smaller than the typical home in the postcode (89 m² median across 25 EPCs). Last sale on file: £585,000 in June 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you offer

Know exactly what you're buying at 8 Sidmouth Avenue

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

Already flagged here

Signs of HMO activity in the areaLarger development activity nearby
£14.99
Trusted by UK homebuyers

Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms3
  • Bathrooms2
  • EnsuiteYes

Outside

  • Private gardenRear
  • GarageYes
  • Cul-de-sacYes

Building

  • RefurbishedYes
  • Extension potentialPossible
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

8 Sidmouth Avenue's EPC is over a decade old — improvements since won't be reflected.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 03 Mar 2022

EPC Rating

A
B
C
D
D67
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.9 t/year
Occupancy
Rented
Planning

Planning history

Applications and permits filed against 8 Sidmouth Avenue, Isleworth, TW7 4DW, sourced from the PlanIt planning register.

Multiple extension applications run across more than a decade of planning history at 8 Sidmouth Avenue.

  1. Jan 2026
    ExtensionOutline
    In report

    Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows to the house.

    Documents
    8 docs on file
    Reference
    P/2025/3413
    View planning record
  2. Apr 2016
    ExtensionOutline
    In report

    Extension: Single storey · Rear of property

    Certificate of lawfulness for erection of a single storey rear extension to the house

    Reference
    P/2016/0699
    View planning record
Before you offer

We flagged 2 things worth checking at 8 Sidmouth Avenue

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
£14.99

30-day money-back guarantee

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

8 Sidmouth Avenue has more than doubled in price since the earliest registered sale in 2006.

Current estimate

£612,000

Modelled from EPC, postcode comparables and a sale-price growth of 5.4% per year over 15 years.

See how we calculated this
Last sold (2021)

£585,000

Growth on file: 5.4% per year over 15 years.

Sales timeline

  1. 28 June 2021Most recent

    £585,000

    +125.0%over 15 years
  2. 10 March 2006

    £260,000

Median price across the last 5 sales in TW7 4DW: £575,000 (2024–2022).

Before you offer

Everything we know about 8 Sidmouth Avenue, 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
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Sidmouth Avenue homes

Four headline reads against 23 similar houses on this street, drawn from the latest EPC and Land Registry data.

8 Sidmouth Avenue is notably below the street on floor area.

Price per m²

£8,078

Street avg £5,810

Strongly above

Floor Area

72 m²

Street avg 97 m²

Strongly below

Habitable Rooms

5 rooms

Street avg 5 rooms

On par

CO₂ Emissions

2.9 t/year

Street avg 4.7 t/year

Strongly above
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Isleworth district page.

Rail-style transport is unusually close for this postcode.

Crime

3/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

West Thames College — bus stop.

Closest school

0.2 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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around TW7 4DW from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for TW7 4DW

Daytime· 07:00 – 23:00

53.7dB

Low
Night-time road noise heatmap for TW7 4DW

Night-time· 23:00 – 07:00

43.3dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 8 Sidmouth Avenue, Isleworth, TW7 4DW. Each answer is also embedded as structured data for search engines.