18 Adderley Road, Harrow HA3 7HT

End-Terrace house · Built 1930-1949 · 72 m² · Boiler and radiators, mains gas

Upgrade Plan

ED for £3,387 · £3,387 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£23 – £300typical£742.2 yrs+2.5 pts
Loft insulation£225typical£415.5 yrs+1.4 pts
Heating controls£400typical£3112.7 yrs+1.0 pts
Band A condensing boiler£2,600typical£5348.9 yrs+1.8 pts · reaches D
Solar water heating(optional, beyond D)£5,000typical£6750+ yrs+2.2 pts
Solar photovoltaic panels(optional, beyond D)£4,500 – £9,000typical£8050+ yrs+2.7 pts
Solid wall insulation(optional, beyond D)£9,000typical£9350+ yrs+3.1 pts
Wind turbine(optional, beyond D)£2,750 – £12,500typical£7250+ yrs+2.4 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£1,618
per year at grade E
£1,106
per year at grade D

The full plan saves £200 a year — a 5.9% annual return on £3,387.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2011, states £1,036 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

26 August 2015£447,500
10 October 2013£337,000
15 March 2007£275,000
15 September 1999£138,900
28 February 1995£78,500

Estimated today: £573,287 HPI-indexed estimate, not a valuation

Adderley Road: 73 sales since 1995 · £497,545 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Belmont SchoolPrimary0.2 mi
Weald Rise Primary SchoolPrimary0.3 mi
St Joseph's Catholic Primary SchoolPrimary0.5 mi
The Sacred Heart Language CollegeSecondary0.3 miProgress 8 +0.56 · well above average (2023/24)
Salvatorian Roman Catholic CollegeSecondary0.4 miProgress 8 +0.45 · above average (2023/24)
Bentley Wood High SchoolSecondary1.1 miProgress 8 +0.90 · well 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.

9.8
crimes a month
108
in the last 12 months
Violence and sexual offences
most common · 35% of the total

Police.uk street-level data for LSOA E01002231, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Adderley Road

How this home sits against its street.

32
graded homes
60.5
average score
D
most common grade
-10.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.