4 Castle Street, Wellingborough NN8 1LS

Detached flat · Built 1983-1990 · 49 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

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MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting(optional, beyond C)£210 – £245£546.0 yrs+0.2 pts
Floor insulation(optional, beyond C)£5,000 – £10,000£11350+ yrs+3.8 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

£851
per year at grade C
£733
per year at grade C

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

Sold prices

9 December 2011£70,000
18 February 1999£31,000
25 August 1995£31,000

Estimated today: £117,500 HPI-indexed estimate, not a valuation

Castle Street: 99 sales since 1995 · £259,596 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
All Saints CEVA Primary School and NurseryPrimaryunder 0.1 mi
Park Junior School, WellingboroughPrimary0.4 mi
Victoria Primary AcademyPrimary0.5 mi
Wrenn SchoolSecondary0.3 miProgress 8 -0.02 · average (2023/24)
Sir Christopher Hatton AcademySecondary0.7 miProgress 8 +0.37 · above average (2023/24)
Weavers AcademySecondary1.2 miProgress 8 -0.39 · below 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.

24.1
crimes a month
265
in the last 12 months
Violence and sexual offences
most common · 34% of the total

Police.uk street-level data for LSOA E01027314, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Castle Street

How this home sits against its street.

56
graded homes
62.5
average score
C
most common grade
+7.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.