21 Windsor Close, Collingham, Newark NG23 7PR

End-Terrace bungalow · 1950-1966 · Boiler and radiators, mains gas

Upgrade Plan

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MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation(optional, beyond D)£23 – £30typical£102.8 yrs+0.7 pts
Loft insulation(optional, beyond D)£225typical£542.4 yrs+0.4 pts
Wind turbine(optional, beyond D)£2,750typical£950+ yrs+0.6 pts
Solar water heating(optional, beyond D)£5,000typical£950+ yrs+0.6 pts
Solar photovoltaic panels(optional, beyond D)£4,500 – £9,000typical£1050+ yrs+0.7 pts

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. 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

£529
per year at grade D
£486
per year at grade D

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

No sale recorded for this address since 1995.

Windsor Close: 25 sales since 1995 · £170,200 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
John Blow Primary SchoolPrimaryunder 0.1 mi
Swinderby All Saints Church of England Primary SchoolPrimary2.3 mi
Muskham Primary SchoolPrimary3.0 mi
Magnus Church of England AcademySecondary5.8 miProgress 8 -0.50 · below average (2023/24)
The Newark AcademySecondary5.9 miProgress 8 +0.40 · above average (2023/24)
The Suthers SchoolSecondary7.3 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.

7.8
crimes a month
86
in the last 12 months
Violence and sexual offences
most common · 40% of the total

Police.uk street-level data for LSOA E01028316, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Windsor Close

How this home sits against its street.

38
graded homes
71.7
average score
C
most common grade
-9.7
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.