21 The Polygon, Southampton SO15 2BP

End-Terrace flat · 2020 · 88 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

This certificate lists no outstanding recommendations.

Running costs

£1,390
per year at grade D

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2021, states £840 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

22 January 2021£270,000
28 September 2018£600,000

Estimated today: £288,438 HPI-indexed estimate, not a valuation

The Polygon: 93 sales since 1995 · £243,174 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Springhill Catholic Primary SchoolPrimary0.3 mi
Banister Primary SchoolPrimary0.5 mi
Freemantle Church of England Community AcademyPrimary0.7 mi
St Anne's Catholic SchoolSecondary0.4 miProgress 8 +0.72 · well above average (2023/24)
Upper Shirley High SchoolSecondary1.4 miProgress 8 +0.09 · average (2023/24)
Regents Park Community CollegeSecondary1.6 miNot in the KS4 performance tables

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.

28
crimes a month
308
in the last 12 months
Violence and sexual offences
most common · 37% of the total

Police.uk street-level data for LSOA E01017136, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

The Polygon

How this home sits against its street.

68
graded homes
62.5
average score
D
most common grade
-2.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.