12 Cowley Close, Southampton, SO16 9WD

12 Cowley Close is a two-bedroom detached house in Southampton (SO16 9WD). It has a recorded floor area of 42 m² (around 448 sq ft), construction records dating it to 1983-1990 and council tax band A. At 42 m² this is the 13th smallest of 42 units on EPC record in the building, where floor areas span 36–133 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (48 versus a best of 84). Period features are noted in the property record. The latest certificate (July 2011) shows an E (score 48), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2010. Between certificates, window efficiency went from Average to Good; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity. The latest certificate is from July 2011, so improvements made since then won't be reflected.

At 42 m² it sits well below the postcode median (62 m² across 41 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2002–2019, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £161,000 is 19.3% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£301/sq ft) was about 32.3% above the typical sold price in the postcode. Sold May 2019 for £135,000.