4a, Holbeck Row, Southwark, London, SE15 1QA

4a is a one-bedroom mid-terrace house in Southwark, London, London (SE15 1QA). It has a recorded floor area of 42 m² (around 452 sq ft) and construction records dating it to before 1900. At 42 m² this is the smallest unit on EPC record across the building (42–241 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (February 2013) shows a C (score 69), just inside the C band. The latest certificate is from February 2013, so improvements made since then won't be reflected.

Today's modelled estimate of £346,000 sits 68.8% above the 2013 sale of £205,000. On a £-per-square-foot basis, the last sale (£453/sq ft) was about 91.5% above the typical sold price in the postcode. At 42 m² it sits well below the postcode median (101 m² across 22 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 77% of similar EPCs). Last sold in July 2013, so it's been off the market for around 13 years.