12 Heol Dewi, Brynna, Pontyclun, CF72 9SP

12 Heol Dewi is a three-bedroom semi-detached house in Brynna, Pontyclun, Pontyclun (CF72 9SP). It has a recorded floor area of 79 m² (around 854 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (November 2009) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2008. Between certificates, wall efficiency went from Average to Good and roof efficiency went from Very Poor to Average; while lighting dropped from Average to Poor. The recommended improvements would push it to C (score 72). The latest certificate is from November 2009, so improvements made since then won't be reflected.

Held since December 2009 — that's 16 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £221,000 sits 53.5% above the 2009 sale of £144,000. On a £-per-square-foot basis, the last sale (£169/sq ft) was about 33.1% above the typical sold price in the postcode.