23a, Kettering Street, Wandsworth, London, SW16 6QA

23a is a two-bedroom mid-terrace house in Wandsworth, London, London (SW16 6QA). It has a recorded floor area of 138 m² (around 1485 sq ft), construction records dating it to 1900-1929 and council tax band B. At 138 m² this is the largest unit on EPC record across the building (31–138 m²). The building's EPC ratings span E to C, with this unit at the top. Period features are noted in the property record. The latest certificate (January 2022) shows a C (score 70). When first surveyed in November 2008 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Good to Poor. The recommended improvements would push it to B (score 83). Main heating runs on electricity.

At 138 m² the property is well over the postcode median (59 m² across 53 EPCs), placing it in the larger end of the local stock. Across 1999–2013, sale prices on this property compounded at 7.7% per year. Today's modelled estimate of £618,000 sits 160.2% above the 2013 sale of £237,500. On a £-per-square-foot basis, the last sale (£160/sq ft) was about 32.8% below the postcode norm. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension and solar panel installation, meaningful when judging how the property has evolved. On the market in April 2013 and unlisted since — roughly 13 years.