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Get started21 Nant Y Dwrgi is a semi-detached house in Llanharan, Pontyclun, Pontyclun (CF72 9GR). It has a recorded floor area of 106 m² (around 1141 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (February 2026) shows a C (score 78), near the top of the C band. The rating has held steady at C across 2 certificates since October 2014. Between certificates, roof efficiency went from Average to Very Good and lighting went from Average to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83). This certificate was lodged in the last six months, so the rating reflects current condition.
Sale prices here have lagged England HPI: -2.1% per year against 0% for the wider region. Today's modelled estimate of £223,000 sits 78.4% above the 2015 sale of £125,000. On a £-per-square-foot basis, the last sale (£110/sq ft) was about 31.7% below the postcode norm. Last sold in June 2015, so it's been off the market for around 11 years.
The EPC has just been inspected, so the rating reflects current condition.
£223,000
Modelled from EPC, postcode comparables and a sale-price growth of -2.1% per year over 9 years.
£125,000
Growth on file: -2.1% per year over 9 years.
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On price per m², 21 Nant Y Dwrgi runs well behind the street norm.
Price per m²
£1,179
Street avg £1,834
Floor Area
106 m²
Street avg 103 m²
Habitable Rooms
6 rooms
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Llanharan Rail Station — railway station.
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
22 June 2015Most recent
£125,000
-16.7%over 8 years29 September 2006
£149,995
Median price across the last 5 sales in CF72 9GR: £220,000 (2025–2023).
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Street avg 6 rooms
CO₂ Emissions
2.1 t/year
Street avg 2.5 t/year