121 Lansdowne Road, Cardiff CF5 1PS

Semi-Detached house · Built 1900-1929 · 93 m² · Owner-Occupied · Room heaters, mains gas

Upgrade Plan

FB for £18,875 · £4,719 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing£80 – £120£1920.5 yrs+5.6 pts
Loft insulation£100 – £350£1082.1 yrs+3.1 pts · reaches E
Floor insulation£800 – £1,200£2284.4 yrs+6.6 pts
Low energy lighting£50£105.0 yrs+0.3 pts
Cavity wall insulation£500 – £1,500£1705.9 yrs+4.9 pts
Change of heating system£3,000 – £7,000£6497.7 yrs+18.8 pts · reaches C
Solar water heating£4,000 – £6,000£17728.3 yrs+5.1 pts
Solar photovoltaic panels£5,000 – £8,000£21130.9 yrs+6.1 pts · reaches B
Double glazing(optional, beyond B)£3,300 – £6,500£8250+ yrs+2.4 pts

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

£2,734
per year at grade F
£907
per year at grade B

The full plan saves £1,745 a year — a 9.2% annual return on £18,875.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £1,724 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

21 June 2019£195,500

Estimated today: £263,733 HPI-indexed estimate, not a valuation

Lansdowne Road: 331 sales since 1995 · £241,883 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.

9.4
crimes a month
103
in the last 12 months
Violence and sexual offences
most common · 48% of the total

Police.uk street-level data for LSOA W01002023, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Lansdowne Road

How this home sits against its street.

184
graded homes
60.8
average score
D
most common grade
-28.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.