Flat 8, 55, Onslow Gardens, London SW7 3QF

Mid-Terrace flat · Pre-1900 · Boiler and radiators, electric

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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
Solid wall insulation£9,000typical

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type.

Running costs

£2,948
per year at grade G

Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.

Sold prices

11 October 2017£3,450,000

Estimated today: £3,009,803 HPI-indexed estimate, not a valuation

Onslow Gardens: 1,053 sales since 1995 · £1,445,925 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Our Lady of Victories RC Primary SchoolPrimary0.1 mi
Bousfield Primary SchoolPrimary0.3 mi
Oratory Roman Catholic Primary SchoolPrimary0.4 mi
St. Thomas More Language CollegeSecondary0.7 miAttainment 8 45.9 · no Progress 8 published
The London Oratory SchoolSecondary0.8 miProgress 8 +0.62 · well above average (2023/24)
Chelsea AcademySecondary0.9 miProgress 8 +0.23 · 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.

34.7
crimes a month
382
in the last 12 months
Anti-social behaviour
most common · 22% of the total

Police.uk street-level data for LSOA E01035713, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Onslow Gardens

How this home sits against its street.

580
graded homes
63.1
average score
D
most common grade
-62.1
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.