13a, Salisbury Road, Cosham, Portsmouth, PO6 2PL

13a is an end-of-terrace house in Cosham, Portsmouth, Portsmouth (PO6 2PL). It has a recorded floor area of 72 m² (around 775 sq ft) and construction records dating it to 1900-1929. At 72 m² this is the smallest unit on EPC record across the building (72–150 m²). The building's EPC ratings span E to C across 20 units on file. The latest certificate (June 2013) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 75). The latest certificate is from June 2013, so improvements made since then won't be reflected.

Untraded for 22 years, with the last transfer in April 2004. Across the public record there are 4 sales, relatively high churn for a single property. Across 1996–2004, sale prices on this property compounded at 15.8% per year. Today's modelled estimate of £189,000 sits 50% above the 2004 sale of £126,000. On a £-per-square-foot basis, the last sale (£163/sq ft) was about 22.4% below the postcode norm. At 72 m² it sits well below the postcode median (110 m² across 19 EPCs), making it one of the more compact homes locally.