Flat, 18 Westgate, Grantham NG31 6LT

Semi-Detached flat · Built before 1900 · 87 m² · Rented (Private) · Room heaters, electric

Upgrade Plan

GC for £15,523 · £3,881 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£5080.0 yrs+9.2 pts · reaches F
Draughtproofing£80 – £120£5010.2 yrs+9.1 pts
High-retention storage heaters£1,200 – £1,800£1,1701.3 yrs+21.2 pts · reaches D
Solid wall insulation£4,000 – £14,000£64214.0 yrs+11.6 pts
Double glazing£3,300 – £6,500£21522.8 yrs+3.9 pts · reaches C

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

£4,638
per year at grade G
£1,602
per year at grade C

The full plan saves £3,036 a year — a 19.6% annual return on £15,523.

Energy costs as modelled on the certificate, not a bill.

Sold prices

No sale recorded for this address since 1995.

Westgate: 20 sales since 1995 · £129,500 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
St Wulfram's National Church of England Primary SchoolPrimary0.2 mi
Huntingtower Community Primary AcademyPrimary0.5 mi
The Isaac Newton Primary SchoolPrimary0.5 mi
Charles Read AcademySecondary0.2 miProgress 8 +0.58 · well above average (2023/24)
The King's School, GranthamSecondary0.3 miProgress 8 +1.10 · well above average (2023/24)
Kesteven and Grantham Girls' SchoolSecondary0.4 miProgress 8 +1.04 · 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.

92.9
crimes a month
1,022
in the last 12 months
Violence and sexual offences
most common · 27% of the total

Police.uk street-level data for LSOA E01026323, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Westgate

How this home sits against its street.

50
graded homes
57.1
average score
D
most common grade
-41.1
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.