Flat 23 St. Osyth Court, Barry CF62 6RT

End-Terrace flat · Built 1976-1982 · 67 m² · Boiler and radiators, mains gas

Upgrade Plan

CB for £1,449 · £1,449 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£23 – £30typical£1210.2 yrs+4.6 pts
Low energy lighting£15 – £30typical£63.6 yrs+0.2 pts
Heating controls£400typical£527.7 yrs+1.9 pts
Cavity wall insulation£1,000typical£1069.4 yrs+4.0 pts · reaches B
Band A condensing boiler(optional, beyond B)£2,600typical£8729.8 yrs+3.3 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£937
per year at grade C
£564
per year at grade B

The full plan saves £286 a year — a 19.7% annual return on £1,449.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £578 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

30 March 2020£165,000
11 June 2010£150,000
7 July 1998£60,000

Estimated today: £193,089 HPI-indexed estimate, not a valuation

Schools nearby

The DfE register covers England. Welsh schools are held in a separate Welsh Government register, which we have not ingested yet.

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.

5.4
crimes a month
54
in the last 12 months
Violence and sexual offences
most common · 50% of the total

Police.uk street-level data for LSOA W01001059, 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.