3 Hook Lane, Northaw, Potters Bar EN6 4DA

Semi-Detached house · Built 1930-1949 · 140 m² · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Cavity wall insulation(optional, beyond D)£100 – £300£1261.6 yrs+2.5 pts
Heating controls(optional, beyond D)£350 – £450£626.5 yrs+1.2 pts
Band A condensing boiler(optional, beyond D)£1,500 – £3,500£10424.0 yrs+2.0 pts
Double glazing(optional, beyond D)£2,500 – £6,500£6150+ yrs+1.2 pts
Solar photovoltaic panels(optional, beyond D)£11,000 – £20,000£15750+ yrs+3.1 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

£2,180
per year at grade D
£1,670
per year at grade D

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2011, states £1,311 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

18 May 2004£420,000

Estimated today: £910,000 HPI-indexed estimate, not a valuation

Hook Lane: 8 sales since 1995 · £660,000 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Oakmere Primary SchoolPrimary0.5 mi
Northaw Church of England Primary SchoolPrimary0.7 mi
Ladbrooke Junior Mixed and Infant SchoolPrimary1.1 mi
Gracewood AcademySecondary1.3 miNot in the KS4 performance tables
Dame Alice Owen's SchoolSecondary2.3 miProgress 8 +0.92 · well above average (2023/24)
Chancellor's SchoolSecondary2.5 miProgress 8 +0.35 · 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.

11.3
crimes a month
113
in the last 12 months
Violence and sexual offences
most common · 25% of the total

Police.uk street-level data for LSOA E01023947, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Hook Lane

How this home sits against its street.

5
graded homes
54.8
average score
D
most common grade
+2.2
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.