Gwernan, Harlech LL46 2PY

Detached house · Built before 1900 · 225 m² · Owner-Occupied · Boiler and radiators, oil

Upgrade Plan

FC for £28,200 · £9,400 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Room-in-roof insulation£1,500 – £2,700£4904.3 yrs+10.5 pts · reaches E
Band A condensing boiler£2,200 – £3,000£21811.9 yrs+4.7 pts
Solar photovoltaic panels£3,500 – £5,500£32913.7 yrs+7.0 pts · reaches D
Floor insulation£4,000 – £6,000£35514.1 yrs+7.6 pts
Solar water heating£4,000 – £6,000£27618.1 yrs+5.9 pts
Solid wall insulation£4,000 – £14,000£38423.4 yrs+8.2 pts · reaches C

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

£3,661
per year at grade F
£1,609
per year at grade C

The full plan saves £2,052 a year — a 7.3% annual return on £28,200.

Energy costs as modelled on the certificate, not a bill.

Sold prices

16 October 2025£375,000
23 June 2017£280,000
23 August 2013£265,000

Estimated today: £388,595 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.

10.4
crimes a month
104
in the last 12 months
Violence and sexual offences
most common · 40% of the total

Police.uk street-level data for LSOA W01000074, 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.