23b High Street, London W3 6ND

End-Terrace flat · Built 1950-1966 · 60 m² · Rented (Private) · Boiler and underfloor heating, mains gas

Upgrade Plan

DC for £9,000 · £9,000 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Solid wall insulation£4,000 – £14,000£18149.7 yrs+7.0 pts · reaches C

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

£788
per year at grade D
£607
per year at grade C

The full plan saves £181 a year — a 2.0% annual return on £9,000.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2023, states £651 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

19 March 2025£307,000
30 November 2012£240,000
1 December 2003£197,500
25 September 2000£139,000

Estimated today: £300,999 HPI-indexed estimate, not a valuation

High Street: 2,535 sales since 1995 · £402,690 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Ark Priory Primary AcademyPrimary0.1 mi
Ark Byron Primary AcademyPrimary0.3 mi
Derwentwater Primary SchoolPrimary0.3 mi
Ark Soane AcademySecondary0.5 miNot in the KS4 performance tables
Ark Acton AcademySecondary0.6 miProgress 8 +0.20 · average (2023/24)
Twyford Church of England High SchoolSecondary0.7 miProgress 8 +1.08 · 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.

21.2
crimes a month
233
in the last 12 months
Anti-social behaviour
most common · 40% of the total

Police.uk street-level data for LSOA E01001355, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

High Street

How this home sits against its street.

2,740
graded homes
72.5
average score
B
most common grade
-4.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.