Flat 2, 4, Corn Hill, Porthmadog LL49 9AT

End-Terrace flat · Built before 1900 · 75 m² · Owner-Occupied · Room heaters, electric

Upgrade Plan

EB for £8,300 · £2,767 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
High-retention storage heaters£1,800 – £800£9031.4 yrs+22.0 pts · reaches C
Solid wall insulation£14,000 – £0£49514.1 yrs+12.0 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

£2,106
per year at grade E
£708
per year at grade B

The full plan saves £1,398 a year — a 16.8% annual return on £8,300.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2018, states £1,216 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

17 November 2003£86,000
9 July 1997£39,500

Estimated today: £155,825 HPI-indexed estimate, not a valuation

Corn Hill: 40 sales since 1995 · £203,529 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.

21.1
crimes a month
232
in the last 12 months
Violence and sexual offences
most common · 36% of the total

Police.uk street-level data for LSOA W01000106, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Corn Hill

How this home sits against its street.

15
graded homes
46.9
average score
D
most common grade
+2.1
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.