121 Wivenhoe Close, London SE15 3QL

Enclosed Mid-Terrace flat · Built 1976-1982 · 45 m² · Rented (social) · Community scheme

Upgrade Plan

CB for £7,033 · £7,033 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£440.5 yrs+2.0 pts
Draughtproofing£80 – £120£442.3 yrs+2.0 pts
Low energy lighting£10£24.4 yrs+0.1 pts
Floor insulation£800 – £1,200£5219.3 yrs+2.3 pts
Cavity wall insulation£500 – £1,500£3925.8 yrs+1.7 pts
Double glazing£3,300 – £6,500£1950+ yrs+0.8 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

£686
per year at grade C
£486
per year at grade B

The full plan saves £200 a year — a 2.8% annual return on £7,033.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2012, states £405 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

No sale recorded for this address since 1995.

Schools nearby

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

SchoolPhaseDistanceProgress
Rye Oak Primary SchoolPrimary0.1 mi
Bellenden Primary SchoolPrimary0.2 mi
St John's and St Clement's Church of England Primary SchoolPrimary0.4 mi
The St Thomas the Apostle CollegeSecondary0.5 miProgress 8 +1.45 · well above average (2023/24)
Harris Academy PeckhamSecondary0.6 miProgress 8 +0.29 · above average (2023/24)
Harris Boys' Academy East DulwichSecondary0.6 miProgress 8 +0.98 · 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.

27.5
crimes a month
302
in the last 12 months
Violence and sexual offences
most common · 22% of the total

Police.uk street-level data for LSOA E01004068, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.