121 Hayes Apartments, The Hayes, Cardiff, CF10 1BL

121 Hayes Apartments is a one-bedroom mid-terrace house in Cardiff (CF10 1BL). It has a recorded floor area of 45 m² (around 479 sq ft) and council tax band E. The latest certificate (March 2010) returns a B (score 83), comfortably above the UK average. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from March 2010, so improvements made since then won't be reflected. At 45 m² this is the 13th smallest of 67 units on EPC record in the building, where floor areas span 39–79 m². The building's EPC ratings span D to B, with this unit at the top.

At 45 m² it sits well below the postcode median (65 m² across 66 EPCs), making it one of the more compact homes locally. Across 2010–2019, sale prices on this property compounded at 4.8% per year. On a £-per-square-foot basis, the last sale (£394/sq ft) was about 47% above the typical sold price in the postcode. Last sale on file: £189,000 in April 2019.