5a, Commercial Street, Ystradgynlais, Swansea, SA9 1HD

5a is a mid-terrace house in Ystradgynlais, Swansea, Swansea (SA9 1HD). It has a recorded floor area of 65 m² (around 700 sq ft) and construction records dating it to before 1900. The latest certificate (August 2017) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (August 2012); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to D (score 60). At 65 m² this is the 2nd smallest of 8 units on EPC record in the building, where floor areas span 59–132 m². The building's EPC ratings span F to C across 8 units on file.

Today's modelled estimate of £150,000 sits 233.7% above the 2017 sale of £44,950. On a £-per-square-foot basis, the last sale (£64/sq ft) was about 32.9% below the postcode norm. At 65 m² it sits well below the postcode median (100 m² across 7 EPCs), making it one of the more compact homes locally. Last changed hands 9 years ago, in September 2017.