Rockstone Court, Flat 10, Rockstone Lane, Southampton, SO14 6HZ

Rockstone Court is a two-bedroom semi-detached house in Southampton (SO14 6HZ). It has a recorded floor area of 52 m² (around 560 sq ft) and construction records dating it to 1983-1990. The latest certificate (July 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2009. Between certificates, hot-water efficiency went from Very Poor to Poor and main heating went from Poor to Average. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity. At 52 m² this is the 7th smallest of 9 units on EPC record in Rockstone Court, where floor areas span 43–55 m². The building's EPC ratings span E to C across 9 units on file. Our model identifies extension potential, subject to local planning policy.

Untraded for 17 years, with the last transfer in September 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. One planning record on file: new windows approved in 2025. Past consents include new windows, meaningful when judging how the property has evolved. Across 2005–2009, sale prices on this property compounded at 15.4% per year. Today's modelled estimate of £148,000 is 33.3% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£198/sq ft) was about 23.8% below the postcode norm.