12a, Barforth Road, Southwark, London, SE15 3PS

12a is an end-of-terrace house in Southwark, London, London (SE15 3PS). It has a recorded floor area of 86 m² (around 926 sq ft) and construction records dating it to 1900-1929. The latest certificate (November 2017) shows an E (score 53), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since June 2009. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Average to Good. The recommended improvements would lift it to C (score 70), a 2-band jump. At 86 m² this is the 20th smallest of 36 units on EPC record in the building, where floor areas span 39–195 m². The building's EPC ratings span G to C across 36 units on file.

Last sale on file: £525,000 in February 2019. Across the public record there are 4 sales, relatively high churn for a single property. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Across 2002–2019, sale prices on this property compounded at 10.5% per year. On a £-per-square-foot basis, the last sale (£567/sq ft) was about 82.8% above the typical sold price in the postcode.