20 Allt Ioan, Johnstown, Carmarthen SA31 3SB

End-Terrace house · Built 1996-2002 · 55 m² · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation(optional, beyond C)£225typical£259.2 yrs+1.0 pts
Band A condensing boiler(optional, beyond C)£2,600typical£3250+ yrs+1.3 pts
Solar water heating(optional, beyond C)£5,000typical£4050+ yrs+1.7 pts
Solar photovoltaic panels(optional, beyond C)£4,500 – £9,000typical£4850+ yrs+2.0 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£811
per year at grade C
£667
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £497 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

11 August 2010£121,000
5 July 2007£124,995
17 May 2002£59,750
20 September 1999£44,500
30 January 1998£41,995

Estimated today: £197,085 HPI-indexed estimate, not a valuation

Allt Ioan: 120 sales since 1995 · £209,050 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.

14.7
crimes a month
147
in the last 12 months
Violence and sexual offences
most common · 59% of the total

Police.uk street-level data for LSOA W01000644, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Allt Ioan

How this home sits against its street.

29
graded homes
72.6
average score
C
most common grade
+0.4
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.