12b, The Avenue, Llandaff, Cardiff, CF5 2LQ

12b is a two-bedroom semi-detached house in Llandaff, Cardiff, Cardiff (CF5 2LQ). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1930-1949 and council tax band D. At 67 m² this is the smallest unit on EPC record across the building (67–300 m²). The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 33). The latest certificate (January 2025) shows a C (score 79), near the top of the C band. The recommended improvements would push it to B (score 81).

At 67 m² it sits well below the postcode median (226 m² across 8 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Today's modelled estimate of £252,000 is 22.9% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£284/sq ft) was about 18.9% above the typical sold price in the postcode. On the market in June 2012 and unlisted since — roughly 14 years.