6a, Church Street, Treherbert, Treorchy, CF42 5PU

6a is a detached house in Treherbert, Treorchy, Treorchy (CF42 5PU). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (July 2020) shows a G (score 5), near the bottom of the EPC scale. The rating has held steady at G across 2 certificates since June 2018. Between certificates, window efficiency went from Very Poor to Good and main heating went from Very Poor to Average. The recommended improvements would lift it to C (score 80), a 4-band jump. Main heating runs on electricity.

At 45 m² it sits well below the postcode median (100 m² across 14 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2005–2025, sale prices on this property compounded at 3.7% per year. Today's modelled estimate of £115,000 sits 130% above the 2025 sale of £50,000. On a £-per-square-foot basis, the last sale (£103/sq ft) was about 62% above the typical sold price in the postcode. Most recent transfer was July 2025 at £50,000 — fresh data. Across the public record there are 4 sales, relatively high churn for a single property.