13 Porter Street, Southwark, London, SE1 9HD

13 Porter Street is a one-bedroom mid-terrace house in Southwark, London, London (SE1 9HD). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1983-1990 and council tax band C. At 53 m² this is the smallest unit on EPC record across the building (53–132 m²). On EPC score it ranks first in the building (78 versus a worst of 71). Other recorded features include a balcony. The latest certificate (July 2021) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (December 2010); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Average; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81).

Untraded for 18 years, with the last transfer in May 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £508,000 sits 63.9% above the 2008 sale of £310,000. On a £-per-square-foot basis, the last sale (£543/sq ft) was about 19.2% below the postcode norm. At 53 m² it sits well below the postcode median (78 m² across 7 EPCs), making it one of the more compact homes locally.