2 Castle Ashby, Northampton NN7 1LF

Semi-Detached house · Built before 1900 · 128 m² · Electric storage heaters

Upgrade Plan

FE for £20,996 · £20,996 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£1390.2 yrs+1.8 pts
Loft insulation£100 – £300£772.6 yrs+1.0 pts
Low energy lighting£23£73.2 yrs+0.1 pts
High-retention storage heaters£1,000 – £2,500£3205.5 yrs+4.0 pts
Wind turbine£1,500 – £4,000£13520.4 yrs+1.7 pts
Double glazing£1,000 – £1,500£5921.3 yrs+0.7 pts
Solar water heating£4,000 – £6,000£12639.7 yrs+1.6 pts
Solid wall insulation£5,500 – £14,500£17650+ yrs+2.2 pts · reaches E
Solar photovoltaic panels(optional, beyond E)£11,000 – £20,000£15050+ yrs+1.9 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

£4,871
per year at grade F
£3,682
per year at grade E

The full plan saves £1,039 a year — a 4.9% annual return on £20,996.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2011, states £2,229 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
Yardley Hastings Primary SchoolPrimary1.4 mi
Grendon Church of England Primary SchoolPrimary1.5 mi
Denton Primary SchoolPrimary1.5 mi
Wollaston SchoolSecondary4.0 miProgress 8 0.00 · average (2023/24)
Northampton AcademySecondary4.4 miProgress 8 +0.87 · well above average (2023/24)
Weston Favell AcademySecondary5.0 miProgress 8 -0.13 · 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.

6.4
crimes a month
58
in the last 12 months
Violence and sexual offences
most common · 28% of the total

Police.uk street-level data for LSOA E01027308, 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.