4 Well Walk, London NW3 1LD

Mid-Terrace house · Built before 1900 · 168 m² · Owner-Occupied · Boiler and radiators, LPG

Upgrade Plan

FC for £21,175 · £7,058 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing£80 – £120£2190.5 yrs+5.9 pts
Floor insulation£800 – £1,200£2603.8 yrs+7.0 pts · reaches E
Heating controls£350 – £450£954.2 yrs+2.6 pts
Flat roof insulation£850 – £1,500£1985.9 yrs+5.3 pts
Solar photovoltaic panels£3,500 – £5,500£24118.7 yrs+6.5 pts · reaches D
Solar water heating£4,000 – £6,000£20224.8 yrs+5.5 pts
Solid wall insulation£4,000 – £14,000£28132.0 yrs+7.6 pts · reaches C
Double glazing(optional, beyond C)£3,300 – £6,500£9450+ yrs+2.5 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

£3,044
per year at grade F
£1,453
per year at grade C

The full plan saves £1,497 a year — a 7.1% annual return on £21,175.

Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.

Sold prices

20 December 2023£3,025,000
26 August 2010£1,000,000

Estimated today: £3,148,975 HPI-indexed estimate, not a valuation

Well Walk: 120 sales since 1995 · £1,731,648 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
New End Primary SchoolPrimaryunder 0.1 mi
Christ Church Primary School, HampsteadPrimary0.1 mi
Hampstead Parochial Church of England Primary SchoolPrimary0.2 mi
William Ellis SchoolSecondary1.0 miProgress 8 -0.17 · average (2023/24)
Parliament Hill SchoolSecondary1.1 miProgress 8 +0.50 · above average (2023/24)
La Sainte Union Catholic Secondary SchoolSecondary1.1 miProgress 8 +0.18 · 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.

14.9
crimes a month
149
in the last 12 months
Shoplifting
most common · 19% of the total

Police.uk street-level data for LSOA E01000894, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Well Walk

How this home sits against its street.

82
graded homes
61.2
average score
D
most common grade
-32.2
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.