54a, Hamble Lane, Hamble, Southampton, SO31 4JS

54a is a detached house in Hamble, Southampton, Southampton (SO31 4JS). It has a recorded floor area of 121 m² (around 1302 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (June 2018) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in October 2009 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Very Poor to Average and main heating went from Average to Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 69). At 121 m² this is the 42nd smallest of 48 units on EPC record in the building, where floor areas span 43–346 m². The building's EPC ratings span E to B across 48 units on file.

Untraded for 25 years, with the last transfer in September 2001. At 121 m² the property is well over the postcode median (81 m² across 47 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). Today's modelled estimate of £360,000 sits 63.6% above the 2001 sale of £220,000. On a £-per-square-foot basis, the last sale (£169/sq ft) was about 46.9% below the postcode norm.