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Get started11 Bryn Celyn is a three-bedroom semi-detached house in Llanharry, Pontyclun, Pontyclun (CF72 9ZG). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (August 2025) shows a C (score 78), near the top of the C band. The rating has held steady at C across 2 certificates since July 2015. Between certificates, roof efficiency went from Good to Very Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83).
Sale prices here have outpaced England HPI: 4% per year against 0% for the wider region. Today's modelled estimate of £249,000 is 14.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£266/sq ft) was about 18.2% above the typical sold price in the postcode. Sold June 2021 for £218,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
11 Bryn Celyn's carbon output is low for the local stock.
11 Bryn Celyn saw 3 transfers in just over a decade — high turnover for the postcode.
£249,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.0% per year over 6 years.
£218,000
Growth on file: 4.0% per year over 6 years.
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Detailed AI analysis
11 Bryn Celyn outperforms the street on co₂ emissions by a wide margin.
Price per m²
£2,868
Street avg £2,829
Floor Area
76 m²
Street avg 78 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Tylacoch — bus stop.
Changes detected from historical EPC data
Roof insulation improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
29 June 2021Most recent
£218,000
+24.6%over 4 years28 April 2017
£175,000
6 November 2015
£175,000
Median price across the last 5 sales in CF72 9ZG: £200,000 (2025–2024).
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CO₂ Emissions
1.4 t/year
Street avg 1.8 t/year
CF72 9HS