1 Pendyffryn, Talysarn, Caernarfon LL54 6LB

Semi-Detached house · Built before 1900 · 69 m² · Owner-Occupied · No system present: electric heaters assumed

Upgrade Plan

GB for £25,258 · £5,052 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£2930.1 yrs+9.7 pts
Low energy lighting£10£150.7 yrs+0.5 pts
Loft insulation£100 – £350£1631.4 yrs+5.4 pts · reaches F
High-retention storage heaters£1,200 – £1,800£6752.2 yrs+22.4 pts · reaches E
Solar photovoltaic panels£3,500 – £5,500£31714.2 yrs+10.5 pts
Floor insulation£4,000 – £6,000£34314.6 yrs+11.4 pts · reaches D
Solar water heating£4,000 – £6,000£26618.8 yrs+8.8 pts · reaches C
Solid wall insulation£4,000 – £14,000£37024.3 yrs+12.3 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

£3,128
per year at grade G
£686
per year at grade B

The full plan saves £2,442 a year — a 9.7% annual return on £25,258.

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

25 June 2021£100,000
4 October 1996£25,500

Estimated today: £117,986 HPI-indexed estimate, not a valuation

Pendyffryn: 4 sales since 1995 · £96,667 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.

8.2
crimes a month
82
in the last 12 months
Violence and sexual offences
most common · 33% of the total

Police.uk street-level data for LSOA W01000112, 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.