143 Gladstone Road, Watford WD17 2RA

Semi-Detached maisonette · Built 1900-1929 · 64 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

D → C for £1,000 · £1,000 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation—£800 – £1,200£1377.3 yrs+4.5 pts · reaches C
Double glazing(optional, beyond C)—£1,000 – £1,400£5024.2 yrs+1.6 pts
Solid wall insulation(optional, beyond C)—£4,000 – £14,000£14850+ yrs+4.9 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

£1,027
per year at grade D
£692
per year at grade C

The full plan saves £137 a year — a 13.7% annual return on £1,000.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £607 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

7 February 2025£325,000
23 November 2017£307,000

Estimated today: £316,815 HPI-indexed estimate, not a valuation

Schools nearby

No school in the register within reach of this postcode.

Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.