11a, Charlton Road, Southampton, SO15 5FL

11a is a one-bedroom end-of-terrace house in Southampton (SO15 5FL). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1900-1929 and council tax band A. At 51 m² this is the 2nd smallest of 34 units on EPC record in the building, where floor areas span 49–124 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (January 2019) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 73).

Untraded for 18 years, with the last transfer in March 2008. Across the public record there are 4 sales, relatively high churn for a single property. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 51 m² it sits well below the postcode median (90 m² across 33 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. Across 1997–2008, sale prices on this property compounded at 14.1% per year. Today's modelled estimate of £142,000 is 10.9% above the 2008 sale price. On a £-per-square-foot basis, the last sale (£233/sq ft) was about 35.4% above the typical sold price in the postcode.