30 Heol St. Denys, Lisvane, Cardiff CF14 0RU

Detached house · Built 1976-1982 · 164 m² · Boiler and radiators, mains gas

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This certificate lists these measures but records the same score with and without them, so there is no saving or rating gain to attribute to any one of them. That usually means the assessment was incomplete — here the assessor recorded no heating system at all. The costs below are real; a fresh assessment would be the way to find the gain.

MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting£30 – £75typical
Solar photovoltaic panels£4,500 – £9,000typical

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.

Running costs

£1,586
per year at grade C
£1,550
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £972 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

1 October 2015£476,000
12 October 2012£365,000
19 May 1995£146,000

Estimated today: £709,129 HPI-indexed estimate, not a valuation

Heol St Denys: 37 sales since 1995 · £574,750 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.

5.8
crimes a month
23
in the last 12 months
Vehicle crime
most common · 22% of the total

Police.uk street-level data for LSOA W01001778, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Heol St Denys

How this home sits against its street.

17
graded homes
65.1
average score
D
most common grade
+5.9
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.