4 Tummel Close, Cardiff CF23 6LR

Detached house · 1950-1966 · Boiler and radiators, mains gas

Upgrade Plan

FC for £15,964 · £5,321 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£23 – £300typical£1521.1 yrs+6.7 pts · reaches E
Heating controls£400typical£656.2 yrs+2.9 pts
Low energy lighting£30 – £75typical£86.8 yrs+0.3 pts
Cavity wall insulation£1,000typical£1337.5 yrs+5.9 pts
Band A condensing boiler£2,600typical£10923.8 yrs+4.8 pts · reaches D
Solar water heating£5,000typical£13836.3 yrs+6.1 pts
Solar photovoltaic panels£4,500 – £9,000typical£16441.1 yrs+7.3 pts · reaches C

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

£1,428
per year at grade F
£660
per year at grade C

The full plan saves £768 a year — a 4.8% annual return on £15,964.

Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.

Sold prices

28 August 2009£282,500

Estimated today: £529,168 HPI-indexed estimate, not a valuation

Tummel Close: 4 sales since 1995 · £651,250 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.

11.7
crimes a month
105
in the last 12 months
Violence and sexual offences
most common · 23% of the total

Police.uk street-level data for LSOA W01001733, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Tummel Close

How this home sits against its street.

5
graded homes
56.8
average score
D
most common grade
-18.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.