Flat 3, 1 Rockleaze, Bristol, BS9 1ND

Flat 3 is a two-bedroom semi-detached house in Bristol (BS9 1ND). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to before 1900 and council tax band C. At 54 m² this is the smallest unit on EPC record across the building (54–118 m²). The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (53 versus a best of 66). Other recorded features include notable views. The latest certificate (August 2018) shows an E (score 53), well below the UK norm with real room to improve. When first surveyed in December 2010 the rating was F, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Very Good, window efficiency went from Very Poor to Average and lighting went from Good to Very Good; while hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 75), a 2-band jump.

Today's modelled estimate of £292,000 sits 62.2% above the 2013 sale of £180,000. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 24.8% above the typical sold price in the postcode. At 54 m² it sits well below the postcode median (138 m² across 7 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Last changed hands 13 years ago, in August 2013.