9 Constantine Terrace, Caernarfon LL55 2HL

Mid-Terrace house · Built 1900-1929 · 101 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

CB for £10,300 · £10,300 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Flat roof insulation£900 – £1,200£7713.6 yrs+3.8 pts
Solid wall insulation£7,500 – £11,000£11050+ yrs+5.5 pts · reaches B
Solar photovoltaic panels(optional, beyond B)£8,000 – £10,000£9450+ yrs+4.7 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

£1,348
per year at grade C
£1,066
per year at grade B

The full plan saves £188 a year — a 1.8% annual return on £10,300.

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

Sold prices

9 April 2010£110,000
8 August 2006£105,000
4 April 2003£63,500
30 November 2001£46,000

Estimated today: £180,739 HPI-indexed estimate, not a valuation

Constantine Terrace: 23 sales since 1995 · £113,375 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.

35.2
crimes a month
387
in the last 12 months
Violence and sexual offences
most common · 39% of the total

Police.uk street-level data for LSOA W01000111, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Constantine Terrace

How this home sits against its street.

12
graded homes
57.1
average score
D
most common grade
+15.9
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.