23 St. Marys Road, Watford WD18 0EE

Mid-Terrace house · Built 1900-1929 · 70 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Flat roof insulation(optional, beyond C)—£900 – £1,200£4623.0 yrs+2.5 pts
Solid wall insulation(optional, beyond C)—£7,500 – £11,000£6550+ yrs+3.5 pts
Solar photovoltaic panels(optional, beyond C)—£8,000 – £10,000£5650+ yrs+3.0 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

£1,046
per year at grade C
£880
per year at grade C

Energy costs as modelled on the certificate, not a bill.

Sold prices

15 May 2024£350,000
20 May 2015£280,000
4 January 2010£195,000
31 October 2005£176,000
17 January 2000£94,000

Estimated today: £365,315 HPI-indexed estimate, not a valuation

St Marys Road: 171 sales since 1995 · £351,110 average over 10 years

Schools nearby

No school in the register within reach of this postcode.

St Marys Road

How this home sits against its street.

66
graded homes
61.4
average score
D
most common grade
+8.6
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.