135 Penarth Road, Cardiff, CF11 6JU

135 Penarth Road is a one-bedroom mid-terrace house in Cardiff (CF11 6JU). It has a recorded floor area of 31 m² (around 334 sq ft), construction records dating it to 1900-1929 and council tax band B. At 31 m² this is the smallest unit on EPC record across the building (31–147 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (48 versus a best of 78). The home occupies a corner plot. The latest certificate (August 2019) shows an E (score 48), well below the UK norm with real room to improve. The rating has held steady at E across 4 certificates since August 2015. Between certificates, hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity.

Untraded for 20 years, with the last transfer in April 2006. At 31 m² it sits well below the postcode median (69 m² across 19 EPCs), making it one of the more compact homes locally. Across 2001–2006, sale prices on this property compounded at 12.9% per year. Today's modelled estimate of £124,000 is 30.5% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£285/sq ft) was about 315.8% above the typical sold price in the postcode.