8 Northumberland Gardens, Isleworth TW7 5NT

Not Recorded flat · Built 1950-1966 · 57 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Cavity wall insulation(optional, beyond C)£900 – £1,500£1289.4 yrs+4.3 pts
Loft insulation(optional, beyond C)£900 – £1,200£8112.9 yrs+2.7 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges. Savings are restated at the fuel prices assumed in July 2026. Points per measure are estimated from 19.9 million certificates and rescaled to this home’s own certificate delta; the total is the register’s figure.

Running costs

£851
per year at grade C
£642
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2025, states £787 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

11 April 2008£240,000
6 September 2002£173,500
19 September 2001£128,050

Estimated today: £355,048 HPI-indexed estimate, not a valuation

Northumberland Gardens: 27 sales since 1995 · £341,857 average over 10 years

Schools nearby

The schools’ own performance — Progress 8 shows value added, not just raw results.

SchoolPhaseDistanceProgress
Marlborough Primary SchoolPrimary0.2 mi
The Smallberry Green Primary SchoolPrimary0.5 mi
Nishkam School West LondonAll-through0.5 miProgress 8 +0.92 · well above average (2023/24)
The Green School for GirlsSecondary0.2 miProgress 8 +0.64 · well above average (2023/24)
The Green School for BoysSecondary0.3 miProgress 8 +0.20 · average (2023/24)
Bolder AcademySecondary0.5 miProgress 8 +0.36 · above average (2023/24)

Schools from the DfE register, performance from the KS4 performance tables. Progress 8 is a GCSE measure, so primaries have none. Distance is straight-line from the postcode, not a catchment: admission is decided by the school, not by us.

Area context

Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.

8.6
crimes a month
86
in the last 12 months
Anti-social behaviour
most common · 29% of the total

Police.uk street-level data for LSOA E01002679, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Northumberland Gardens

How this home sits against its street.

12
graded homes
65.7
average score
C
most common grade
+4.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.