21a, Ash Tree Road, Southampton, SO18 1LY

21a is a one-bedroom end-of-terrace house in Southampton (SO18 1LY). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1976-1982 and council tax band B. At 44 m² this is the 2nd smallest of 25 units on EPC record in the building, where floor areas span 40–158 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (May 2022) shows a C (score 69), just inside the C band. When first surveyed in February 2009 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Good and main heating went from Poor to Good; while wall efficiency dropped from Good to Average and lighting dropped from Very Good to Good.

It hasn't traded since October 2003, a hold of 23 years that's notably long for the area. Today's modelled estimate of £151,000 sits 92.4% above the 2003 sale of £78,500. At 44 m² it sits well below the postcode median (99 m² across 24 EPCs), making it one of the more compact homes locally. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.