335 St. Leonards Road, Windsor SL4 3DS

Mid-Terrace house · Built 1900-1929 · 85 m² · Boiler and radiators, mains gas, Electric underfloor heating

Upgrade Plan

EC for £15,130 · £7,565 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing£80 – £120£721.4 yrs+3.9 pts · reaches D
Low energy lighting£30£48.0 yrs+0.2 pts
Floor insulation£800 – £1,200£8611.7 yrs+4.6 pts
Solar water heating£4,000 – £6,000£6650+ yrs+3.5 pts
Solid wall insulation£4,000 – £14,000£9350+ yrs+4.9 pts · reaches C
Solar photovoltaic panels(optional, beyond C)£9,000 – £14,000£7950+ yrs+4.2 pts
Double glazing(optional, beyond C)£3,300 – £6,500£3150+ yrs+1.7 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

£1,597
per year at grade E
£1,166
per year at grade C

The full plan saves £321 a year — a 2.1% annual return on £15,130.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2012, states £947 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

14 December 2016£435,000
6 February 2015£374,000
27 November 2012£325,000
13 June 2005£262,500
30 April 2003£234,950
11 December 1998£110,000

Estimated today: £526,661 HPI-indexed estimate, not a valuation

St Leonards Road: 666 sales since 1995 · £453,387 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Oakfield First SchoolPrimary0.2 mi
Clewer Green CofE First SchoolPrimary0.4 mi
St Edward's Catholic First SchoolPrimary0.7 mi
Windsor Girls' SchoolSecondary0.2 miProgress 8 +0.12 · average (2023/24)
The Windsor Boys' SchoolSecondary0.8 miProgress 8 +0.14 · average (2023/24)
Churchmead Church of England (VA) SchoolSecondary2.1 miProgress 8 0.00 · 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.

8.5
crimes a month
85
in the last 12 months
Violence and sexual offences
most common · 42% of the total

Police.uk street-level data for LSOA E01016595, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

St Leonards Road

How this home sits against its street.

353
graded homes
66.1
average score
D
most common grade
-12.1
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.