1 Sylvan Close, Cardiff CF5 3QD

End-Terrace house · Built 1983-1990 · 125 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

DB for £19,520 · £9,760 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting£20£54.4 yrs+0.2 pts
Heating controls£350 – £450£3710.7 yrs+1.6 pts
Band A condensing boiler£2,200 – £3,000£6341.1 yrs+2.6 pts · reaches C
Floor insulation£4,000 – £6,000£10348.6 yrs+4.3 pts
Solar water heating£4,000 – £6,000£8050+ yrs+3.3 pts
Solar photovoltaic panels£5,000 – £8,000£9550+ yrs+4.0 pts · reaches B

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

£1,515
per year at grade D
£1,132
per year at grade B

The full plan saves £383 a year — a 2.0% annual return on £19,520.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2018, states £973 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

3 July 2020£233,800
21 July 2006£172,500
9 July 2004£132,000

Estimated today: £309,345 HPI-indexed estimate, not a valuation

Sylvan Close: 5 sales since 1995 · £233,800 average over 10 years

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.

7.8
crimes a month
78
in the last 12 months
Violence and sexual offences
most common · 24% of the total

Police.uk street-level data for LSOA W01001747, 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.