20 Seaton Close, London SW15 3TJ

Semi-Detached house · Built 1976-1982 · 126 m² · Rented (Private) · Boiler and radiators, mains gas

Upgrade Plan

DB for £28,150 · £14,075 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing£80 – £120£1130.9 yrs+4.0 pts
Low energy lighting£50£68.5 yrs+0.2 pts
Band A condensing boiler£2,200 – £3,000£8231.6 yrs+2.9 pts
Solar water heating£4,000 – £6,000£10448.1 yrs+3.7 pts · reaches C
Solar photovoltaic panels£5,000 – £8,000£12450+ yrs+4.4 pts
Solid wall insulation£4,000 – £14,000£14550+ yrs+5.1 pts
Double glazing£3,300 – £6,500£4950+ yrs+1.7 pts · reaches B

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

£1,718
per year at grade D
£1,095
per year at grade B

The full plan saves £623 a year — a 2.2% annual return on £28,150.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2018, states £1,103 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

24 November 2005£680,000
12 July 2002£600,000
5 January 2001£510,000

Estimated today: £1,724,222 HPI-indexed estimate, not a valuation

Seaton Close: 102 sales since 1995 · £950,827 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Roehampton Church Forest Primary SchoolPrimary0.2 mi
Heathmere Primary SchoolPrimary0.4 mi
Our Lady Queen of Heaven RC SchoolPrimary0.5 mi
Ark Putney AcademySecondary0.6 miProgress 8 +0.23 · above average (2023/24)
Saint Cecilia's Church of England SchoolSecondary1.0 miProgress 8 +0.35 · above average (2023/24)
Ashcroft Technology AcademySecondary1.2 miProgress 8 +1.34 · 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.

11.9
crimes a month
131
in the last 12 months
Anti-social behaviour
most common · 34% of the total

Police.uk street-level data for LSOA E01004572, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Seaton Close

How this home sits against its street.

107
graded homes
69
average score
D
most common grade
-9.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.