3 Trem yr Eifl, Rhostryfan, Caernarfon LL54 7LH

Detached house · Built 1996-2002 · 114 m² · Unknown · Boiler and radiators, LPG

Upgrade Plan

E → C for £19,175 · £9,588 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation—£100 – £350£326.9 yrs+2.0 pts · reaches D
Floor insulation—£800 – £1,200£6814.7 yrs+4.1 pts
Heating controls—£350 – £450£2516.1 yrs+1.5 pts
Low energy lighting—£50£316.8 yrs+0.2 pts
High-performance doors—£1,500 – £500£5518.3 yrs+3.3 pts
Solar water heating—£4,000 – £6,000£5350+ yrs+3.2 pts
Solar photovoltaic panels—£9,000 – £14,000£6350+ yrs+3.8 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

£1,356
per year at grade E
£1,057
per year at grade C

The full plan saves £299 a year — a 1.6% annual return on £19,175.

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

8 December 2015£153,000
18 September 2013£120,000
12 September 2003£135,000

Estimated today: £236,747 HPI-indexed estimate, not a valuation

Trem Yr Eifl: 9 sales since 1995

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.

5.1
crimes a month
51
in the last 12 months
Violence and sexual offences
most common · 43% of the total

Police.uk street-level data for LSOA W01000088, 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.