21 Miller Close, London, HA5 3SZ

Mid-Terrace house · Built 1967-1975 · 80 m² · Rented (Social) · Electric storage heaters

Upgrade Plan

DB for £16,725 · £8,363 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£100 – £350£564.0 yrs+2.1 pts
High-retention storage heaters£1,600 – £2,400£2328.6 yrs+8.8 pts · reaches C
Solar photovoltaic panels£3,500 – £5,500£10941.4 yrs+4.1 pts
Floor insulation£4,000 – £6,000£11842.5 yrs+4.5 pts
Solar water heating£4,000 – £6,000£9150+ yrs+3.5 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

£1,848
per year at grade D
£1,243
per year at grade B

The full plan saves £605 a year — a 3.6% annual return on £16,725.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2024, states £1,890 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

28 July 1999£89,000

Estimated today: £403,766 HPI-indexed estimate, not a valuation

Miller Close: 16 sales since 1995 · £413,500 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Pinner Wood SchoolPrimary0.2 mi
Harlyn Primary SchoolPrimary0.3 mi
West Lodge Primary SchoolPrimary0.7 mi
Northwood SchoolSecondary0.5 miProgress 8 +0.76 · well above average (2023/24)
UTC HeathrowSecondary0.5 miProgress 8 -1.61 · well below average (2023/24)
Haydon SchoolSecondary0.8 miProgress 8 -0.19 · 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.

12.5
crimes a month
138
in the last 12 months
Anti-social behaviour
most common · 43% of the total

Police.uk street-level data for LSOA E01002185, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Miller Close

How this home sits against its street.

18
graded homes
66.8
average score
C
most common grade
-5.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.