20 Douglas Close, Cardiff CF5 2QT

Semi-Detached house · Built 1976-1982 · 94 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

CB for £9,050 · £9,050 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting£50£315.7 yrs+0.2 pts
Floor insulation£6,000 – £0£7341.2 yrs+5.1 pts
Solar photovoltaic panels£5,500 – £500£6744.5 yrs+4.7 pts
Solar water heating£6,000 – £0£5750+ 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

£1,161
per year at grade C
£961
per year at grade B

The full plan saves £200 a year — a 2.2% annual return on £9,050.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £735 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

27 March 2020£247,500
25 March 2020£255,000
26 April 2011£160,000

Estimated today: £328,726 HPI-indexed estimate, not a valuation

Douglas Close: 27 sales since 1995 · £254,364 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.

4.5
crimes a month
27
in the last 12 months
Anti-social behaviour
most common · 37% of the total

Police.uk street-level data for LSOA W01001784, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Douglas Close

How this home sits against its street.

15
graded homes
68.5
average score
C
most common grade
+1.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.