509a, Finchley Road, Camden, London, NW3 7BB

509a is a one-bedroom end-of-terrace house in Camden, London, London (NW3 7BB). It has a recorded floor area of 44 m² (around 474 sq ft) and construction records dating it to 1900-1929. At 44 m² this is the 2nd smallest of 4 units on EPC record in 509a, where floor areas span 38–46 m². On EPC score it ranks last in the building (61 versus a best of 63). The latest certificate (January 2013) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2009. Between certificates, lighting dropped from Very Good to Very Poor. The recommended improvements would push it to C (score 80). The latest certificate is from January 2013, so improvements made since then won't be reflected.

Untraded for 30 years, with the last transfer in April 1996. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £509,000 sits 239.3% above the 1996 sale of £150,000. At 44 m² it's 15.4% smaller than the typical home in the postcode (52 m² median across 29 EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.