4 Lon Cowin, Bancyfelin, Carmarthen, SA33 5NF

4 Lon Cowin is a semi-detached house in Bancyfelin, Carmarthen, Carmarthen (SA33 5NF). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (October 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2015. Between certificates, wall efficiency went from Poor to Good and lighting went from Poor to Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 72). Main heating runs on oil. At 66 m² this is the 4th smallest of 15 units on EPC record in the building, where floor areas span 59–124 m². The building's EPC ratings span F to C across 15 units on file.

At 66 m² it's 21% smaller than the typical home in the postcode (84 m² median across 14 EPCs). Across 2010–2022, sale prices on this property compounded at 2.1% per year. Today's modelled estimate of £115,000 is 37.7% above the 2022 sale price. Most recent transfer: May 2022 at £83,500. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.