9 The Avenue, Llandaff, Cardiff, CF5 2LP

9 The Avenue is a two-bedroom detached house in Llandaff, Cardiff, Cardiff (CF5 2LP). It has a recorded floor area of 106 m² (around 1141 sq ft) and construction records dating it to 1900-1929. At 106 m² this is the 7th smallest of 12 units on EPC record in the building, where floor areas span 52–275 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (April 2021) shows an E (score 49), well below the UK norm with real room to improve. Earlier certificates rated it C (October 2008); the latest reading is 2 bands lower. Between certificates, lighting went from Poor to Very Good; while wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 56).

Held since November 2002 — that's 24 years off the open market, well above the local norm. Across 1998–2002, sale prices on this property compounded at 17.3% per year. Today's modelled estimate of £751,000 is 25.2% above the 2002 sale price. On a £-per-square-foot basis, the last sale (£526/sq ft) was about 68.8% above the typical sold price in the postcode. One historical planning record sits against the property in 2014.