11a, South East Road, Southampton, SO19 8TR

11a is a one-bedroom semi-detached house in Southampton (SO19 8TR). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (January 2025) shows a C (score 73). Earlier certificates rated it B (August 2009); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Average. At 45 m² this is the 18th smallest of 26 units on EPC record in the building, where floor areas span 19–111 m². The building's EPC ratings span E to B across 26 units on file.

Across 2015–2025, sale prices on this property compounded at 3% per year. Today's modelled estimate of £228,000 is 26.5% below the 2025 sale of £310,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£640/sq ft) was about 192.3% above the typical sold price in the postcode. At 45 m² the property is well over the postcode median (33 m² across 25 EPCs), placing it in the larger end of the local stock. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Most recent transfer was March 2025 at £310,000 — fresh data.