115a, Walm Lane, Brent, London, NW2 4QE

115a is a mid-terrace house in Brent, London, London (NW2 4QE). It has a recorded floor area of 18 m² (around 194 sq ft), construction records dating it to 1930-1949 and council tax band A. At 18 m² this is the smallest unit on EPC record across the building (18–215 m²). The building's EPC ratings span F to B across 11 units on file. The latest certificate (May 2020) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in July 2014 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Poor to Good and lighting went from Good to Very Good. The recommended improvements would push it to C (score 72).

Untraded for 20 years, with the last transfer in December 2005. Across 2003–2005, sale prices here grew 0% per year, broadly in step with London's 0% HPI growth. Today's modelled estimate of £424,000 sits 69.6% above the 2005 sale of £250,000. On a £-per-square-foot basis, the last sale (£1,290/sq ft) was about 204% above the typical sold price in the postcode. At 18 m² it sits well below the postcode median (30 m² across 28 EPCs), making it one of the more compact homes locally. 3 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved.