13 Denys Close, Dinas Powys CF64 4JR

Mid-Terrace house · Built 1950-1966 · 67 m² · Owner-occupied · Boiler and radiators, mains gas

Upgrade Plan

CB for £4,780 · £4,780 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Low energy lighting£30£213.7 yrs+0.2 pts
Floor insulation£800 – £1,200£5019.9 yrs+4.6 pts
Cavity wall insulation£500 – £1,500£3826.7 yrs+3.5 pts
Wind turbine£1,500 – £4,000£4250+ yrs+3.8 pts · reaches B
Solar water heating(optional, beyond B)£4,000 – £6,000£3950+ yrs+3.6 pts
Solar photovoltaic panels(optional, beyond B)£9,000 – £14,000£4650+ yrs+4.3 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

£898
per year at grade C
£681
per year at grade B

The full plan saves £132 a year — a 2.8% annual return on £4,780.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2013, states £582 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

27 April 2012£157,000

Estimated today: £283,457 HPI-indexed estimate, not a valuation

Denys Close: 30 sales since 1995 · £232,364 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.

3.3
crimes a month
30
in the last 12 months
Violence and sexual offences
most common · 40% of the total

Police.uk street-level data for LSOA W01001090, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Denys Close

How this home sits against its street.

18
graded homes
67.7
average score
C
most common grade
+1.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.