27a, Barforth Road, Southwark, London, SE15 3PS

27a is an end-of-terrace house in Southwark, London, London (SE15 3PS). It has a recorded floor area of 40 m² (around 431 sq ft) and construction records dating it to 1900-1929. The latest certificate (April 2013) shows a D (score 57), a step below the typical UK home. Earlier certificates rated it C (March 2010); the latest reading is one band lower. Between certificates, window efficiency dropped from Average to Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 72). The latest certificate is from April 2013, so improvements made since then won't be reflected. At 40 m² this is the 2nd 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.

At 40 m² it sits well below the postcode median (84 m² across 35 EPCs), making it one of the more compact homes locally. Across 2013–2017, sale prices on this property compounded at 10.9% per year. On a £-per-square-foot basis, the last sale (£869/sq ft) was about 187% above the typical sold price in the postcode. On the market in September 2017 and unlisted since — roughly 9 years.