20 Devon Road, Watford WD24 4HN

Semi-Detached flat · Built 1930-1949 · 60 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation(optional, beyond C)£100 – £350£872.6 yrs+2.8 pts
Solid wall insulation(optional, beyond C)£4,000 – £14,000£19745.6 yrs+6.2 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

£841
per year at grade C
£557
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2024, states £943 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

21 November 2003£135,000
3 April 2000£87,950
22 January 1999£67,995

Estimated today: £251,837 HPI-indexed estimate, not a valuation

Devon Road: 121 sales since 1995 · £400,732 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Knutsford Primary AcademyPrimary0.1 mi
Parkgate Junior SchoolPrimary0.4 mi
Highwood Primary SchoolPrimary0.6 mi
Queens' SchoolSecondary1.1 miProgress 8 +0.20 · average (2023/24)
Watford Grammar School for GirlsSecondary1.3 miProgress 8 +0.74 · well above average (2023/24)
Watford Grammar School for BoysSecondary1.5 miProgress 8 +0.72 · 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.

11.6
crimes a month
116
in the last 12 months
Anti-social behaviour
most common · 36% of the total

Police.uk street-level data for LSOA E01023895, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Devon Road

How this home sits against its street.

55
graded homes
65.7
average score
D
most common grade
+5.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.