17 Waterloo Gardens, Penylan, Cardiff, Cardiff CF23 5AA

Mid-Terrace house · Built before 1900 · 135 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

CB for £14,500 · £14,500 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation£800 – £1,200£8012.5 yrs+4.0 pts
Solar photovoltaic panels£3,500 – £5,500£7450+ yrs+3.7 pts
Solid wall insulation£4,000 – £14,000£8750+ yrs+4.3 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

£1,318
per year at grade C
£1,077
per year at grade B

The full plan saves £241 a year — a 1.7% annual return on £14,500.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2020, states £833 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

18 May 2023£550,000
4 May 2012£315,000
18 January 2010£100,000
5 September 2007£63,000

Estimated today: £583,214 HPI-indexed estimate, not a valuation

Waterloo Gardens: 72 sales since 1995 · £403,417 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.

36
crimes a month
396
in the last 12 months
Shoplifting
most common · 20% of the total

Police.uk street-level data for LSOA W01001825, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Waterloo Gardens

How this home sits against its street.

36
graded homes
60.2
average score
D
most common grade
+12.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.