7 Oaktree Close, Colden Common, Winchester SO21 1UT

Mid-Terrace house · Built 1976-1982 · 61 m² · Owner-occupied · Boiler and radiators, mains gas

Upgrade Plan

DB for £5,018 · £2,509 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£410.5 yrs+3.3 pts · reaches C
Low energy lighting£20£29.4 yrs+0.2 pts
Loft insulation£100 – £350£239.7 yrs+1.8 pts
Floor insulation£800 – £1,200£4920.6 yrs+3.8 pts
Cavity wall insulation£500 – £1,500£3627.6 yrs+2.9 pts
Wind turbine£1,500 – £4,000£4050+ yrs+3.2 pts · reaches B
Band A condensing boiler(optional, beyond B)£2,200 – £3,000£3050+ yrs+2.4 pts
Solar water heating(optional, beyond B)£4,000 – £6,000£3850+ yrs+3.0 pts
Solar photovoltaic panels(optional, beyond B)£9,000 – £14,000£4550+ yrs+3.5 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

£887
per year at grade D
£583
per year at grade B

The full plan saves £192 a year — a 3.8% annual return on £5,018.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2014, states £615 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

No sale recorded for this address since 1995.

Oaktree Close: 30 sales since 1995

Schools nearby

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

SchoolPhaseDistanceProgress
Colden Common Primary SchoolPrimaryunder 0.1 mi
Otterbourne Church of England Primary SchoolPrimary1.3 mi
Twyford St Mary's Church of England Primary SchoolPrimary1.6 mi
Thornden SchoolSecondary1.8 miProgress 8 +0.74 · well above average (2023/24)
Crestwood Community SchoolSecondary1.9 miProgress 8 -0.73 · well below average (2023/24)
The Toynbee SchoolSecondary2.5 miProgress 8 +0.20 · 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.

7.3
crimes a month
73
in the last 12 months
Violence and sexual offences
most common · 47% of the total

Police.uk street-level data for LSOA E01023228, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Oaktree Close

How this home sits against its street.

8
graded homes
70
average score
C
most common grade
-3.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.