3 Hayes Apartments, The Hayes, Cardiff, CF10 1AQ

3 Hayes Apartments is a one-bedroom mid-terrace house in Cardiff (CF10 1AQ). It has a recorded floor area of 72 m² (around 771 sq ft), construction records dating it to 2007 onwards and council tax band F. At 72 m² this is the 3rd smallest of 5 units on EPC record in 3 Hayes Apartments, where floor areas span 51–73 m². The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (79 versus a best of 85). The latest certificate (March 2011) shows a C (score 79), near the top of the C band. Earlier certificates rated it B (January 2011); the latest reading is one band lower. Between certificates, main heating went from Very Poor to Average; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Good. Main heating runs on electricity. The latest certificate is from March 2011, so improvements made since then won't be reflected.

Held since December 2010 — that's 15 years off the open market, well above the local norm. At 72 m² the property is well over the postcode median (50 m² across 48 EPCs), placing it in the larger end of the local stock.