4 Warburton Close, Harrow HA3 6SU

Detached house · Built 1950-1966 · 122 m² · Owner-occupied · Boiler and radiators, mains gas

Upgrade Plan

EC for £10,315 · £5,158 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£100 – £350£1132.0 yrs+3.3 pts
Floor insulation£800 – £1,200£2384.2 yrs+6.9 pts · reaches D
Heating controls£350 – £450£874.6 yrs+2.5 pts
Cavity wall insulation£500 – £1,500£1785.6 yrs+5.1 pts
Low energy lighting£90£108.6 yrs+0.3 pts
Band A condensing boiler£2,200 – £3,000£14617.8 yrs+4.2 pts
Solar water heating£4,000 – £6,000£18527.0 yrs+5.3 pts · reaches C
Solar photovoltaic panels(optional, beyond C)£9,000 – £14,000£22150+ yrs+6.4 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

£2,479
per year at grade E
£1,300
per year at grade C

The full plan saves £958 a year — a 9.3% annual return on £10,315.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2012, states £1,465 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

1 November 2021£849,400

Estimated today: £880,487 HPI-indexed estimate, not a valuation

Warburton Close: 3 sales since 1995 · £649,700 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Hujjat Primary SchoolPrimary0.4 mi
Cedars Manor SchoolPrimary0.6 mi
St Teresa's Catholic Primary School and NurseryPrimary0.7 mi
Bentley Wood High SchoolSecondary0.6 miProgress 8 +0.90 · well above average (2023/24)
Hatch End High SchoolSecondary0.7 miProgress 8 -0.03 · average (2023/24)
Salvatorian Roman Catholic CollegeSecondary1.0 miProgress 8 +0.45 · 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.

9.5
crimes a month
104
in the last 12 months
Violence and sexual offences
most common · 37% of the total

Police.uk street-level data for LSOA E01002144, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Warburton Close

How this home sits against its street.

3
graded homes
66.3
average score
C
most common grade
-21.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.