21 Crosswell Close, Southampton SO19 8HE

Detached flat · Built 1976-1982 · 41 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation(optional, beyond C)£4,000 – £6,000£8350+ yrs+4.0 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

£683
per year at grade C
£600
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £411 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

12 March 2026£176,500
2 May 2023£168,000
24 August 2007£121,000
30 April 2007£94,950
30 September 1997£36,000

Estimated today: £177,655 HPI-indexed estimate, not a valuation

Crosswell Close: 17 sales since 1995

Schools nearby

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

SchoolPhaseDistanceProgress
Thornhill Primary SchoolPrimary0.3 mi
Valentine Primary School & NurseryPrimary0.6 mi
Sholing Junior SchoolPrimary0.6 mi
Oasis Academy SholingSecondary0.6 miProgress 8 -0.66 · well below average (2023/24)
Woodlands Community CollegeSecondary1.0 miProgress 8 -0.89 · well below average (2023/24)
Oasis Academy MayfieldSecondary1.0 miProgress 8 -0.37 · 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.

7.8
crimes a month
86
in the last 12 months
Violence and sexual offences
most common · 49% of the total

Police.uk street-level data for LSOA E01017257, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Crosswell Close

How this home sits against its street.

4
graded homes
67.5
average score
C
most common grade
+3.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.