2 Islyn, Cwmystradllyn, Garndolbenmaen LL51 9AZ

Semi-Detached house · Built 1950-1966 · 111 m² · Owner-occupied · Boiler and radiators, dual fuel (mineral and wood)

Upgrade Plan

EC for £10,410 · £5,205 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£100 – £350£733.1 yrs+3.6 pts
Low energy lighting£35£75.2 yrs+0.3 pts
Floor insulation£800 – £1,200£1536.6 yrs+7.6 pts
Heating controls£350 – £450£567.2 yrs+2.8 pts · reaches D
Cavity wall insulation£500 – £1,500£1148.8 yrs+5.6 pts
Wind turbine£1,500 – £4,000£12721.7 yrs+6.3 pts
Solar water heating£4,000 – £6,000£11842.2 yrs+5.9 pts · reaches C
Solar photovoltaic panels(optional, beyond C)£9,000 – £14,000£14150+ yrs+7.0 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

£1,646
per year at grade E
£858
per year at grade C

The full plan saves £647 a year — a 6.2% annual return on £10,410.

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

20 January 2014£125,000
17 May 2002£54,000
29 November 1996£39,000

Estimated today: £202,132 HPI-indexed estimate, not a valuation

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.

3.7
crimes a month
22
in the last 12 months
Violence and sexual offences
most common · 45% of the total

Police.uk street-level data for LSOA W01000066, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.