20b Medwin Street, London SW4 7RS

Flat · Built before 1900 · 38 m² · Boiler and radiators, mains gas

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This certificate lists these measures but records the same score with and without them, so there is no saving or rating gain to attribute to any one of them. That usually means the assessment was incomplete — here the assessor recorded no heating system at all. The costs below are real; a fresh assessment would be the way to find the gain.

MeasureGrantNet costSaving / yrPaybackGrade effect
Double glazing£2,500 – £6,500
Solid wall insulation£5,500 – £14,500

Grants verified 20 August 2026. Costs are the register’s indicative ranges.

Running costs

£662
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2011, states £398 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

12 September 2014£420,000

Estimated today: £448,450 HPI-indexed estimate, not a valuation

Medwin Street: 40 sales since 1995 · £521,954 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Stockwell Primary SchoolPrimary0.4 mi
Corpus Christi Catholic Primary SchoolPrimary0.4 mi
St Andrew's Church of England Primary SchoolPrimary0.4 mi
Trinity AcademySecondary0.4 miProgress 8 -0.18 · average (2023/24)
Minerva Virtual AcademySecondary0.4 miNot in the KS4 performance tables
Ark Evelyn Grace AcademySecondary0.8 miProgress 8 -0.46 · below 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.

10.7
crimes a month
107
in the last 12 months
Anti-social behaviour
most common · 23% of the total

Police.uk street-level data for LSOA E01003056, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Medwin Street

How this home sits against its street.

51
graded homes
69.6
average score
C
most common grade
+1.4
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.