6 The Square, Llanharan, Pontyclun CF72 9NR

Mid-Terrace house · Built before 1900 · 150 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

DB for £18,715 · £9,358 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing£80 – £120£1360.7 yrs+4.0 pts
Heating controls£350 – £450£596.8 yrs+1.7 pts
Low energy lighting£115£716.3 yrs+0.2 pts
Band A condensing boiler£2,200 – £3,000£9926.2 yrs+2.9 pts · reaches C
Solar photovoltaic panels£5,000 – £8,000£14943.5 yrs+4.4 pts
Solid wall insulation£4,000 – £14,000£17450+ yrs+5.1 pts · reaches B
Double glazing(optional, beyond B)£3,300 – £6,500£5850+ yrs+1.7 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

£1,820
per year at grade D
£1,137
per year at grade B

The full plan saves £625 a year — a 3.3% annual return on £18,715.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2015, states £1,269 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

11 August 2023£300,000
29 June 2022£250,000
24 October 2018£200,000
18 January 2002£53,500

Estimated today: £340,768 HPI-indexed estimate, not a valuation

The Square: 13 sales since 1995 · £233,750 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.

36.3
crimes a month
399
in the last 12 months
Violence and sexual offences
most common · 50% of the total

Police.uk street-level data for LSOA W01001190, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

The Square

How this home sits against its street.

16
graded homes
56.9
average score
D
most common grade
+6.1
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.