21a, Oxford Road, Haringey, London, N4 3HA

21a is a mid-terrace house in Haringey, London, London (N4 3HA). It has a recorded floor area of 59 m² (around 635 sq ft) and construction records dating it to 1900-1929. At 59 m² this is the 13th smallest of 29 units on EPC record in the building, where floor areas span 15–234 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (February 2025) shows a C (score 75), near the top of the C band. When first surveyed in December 2008 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Very Good.

Untraded for 15 years, with the last transfer in March 2011. Across 2001–2011, sale prices on this property compounded at 7.7% per year. Today's modelled estimate of £540,000 sits 54.3% above the 2011 sale of £350,000. On a £-per-square-foot basis, the last sale (£551/sq ft) was about 79.7% above the typical sold price in the postcode. One planning record on file: an extension approved in 2008. Past consents include an extension, meaningful when judging how the property has evolved.