398 High Road, Harrow HA3 6HJ

Detached house · Built 1900-1929 · 136 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

EB for £25,675 · £8,558 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Flat roof insulation£850 – £1,500£1766.7 yrs+4.9 pts · reaches D
Floor insulation£800 – £6,000£23214.7 yrs+6.4 pts
Band A condensing boiler£2,200 – £3,000£14218.3 yrs+3.9 pts
Solar photovoltaic panels£3,500 – £5,500£21521.0 yrs+5.9 pts · reaches C
Solar water heating£4,000 – £6,000£18027.8 yrs+5.0 pts
Solid wall insulation£4,000 – £14,000£25135.9 yrs+6.9 pts · reaches B

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

£2,315
per year at grade E
£1,120
per year at grade B

The full plan saves £1,195 a year — a 4.7% annual return on £25,675.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2023, states £1,497 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

11 August 2023£875,000
23 February 2006£394,000
24 August 2000£272,000
6 February 1997£162,000

Estimated today: £867,791 HPI-indexed estimate, not a valuation

High Road: 268 sales since 1995 · £484,611 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Hujjat Primary SchoolPrimary0.2 mi
Weald Rise Primary SchoolPrimary0.3 mi
Cedars Manor SchoolPrimary0.6 mi
Bentley Wood High SchoolSecondary0.6 miProgress 8 +0.90 · well above average (2023/24)
Salvatorian Roman Catholic CollegeSecondary0.7 miProgress 8 +0.45 · above average (2023/24)
The Sacred Heart Language CollegeSecondary0.7 miProgress 8 +0.56 · 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.

30.6
crimes a month
337
in the last 12 months
Shoplifting
most common · 38% of the total

Police.uk street-level data for LSOA E01002142, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

High Road

How this home sits against its street.

222
graded homes
68
average score
C
most common grade
-17.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.