3a, Cornwall Road, Harrow, HA1 4ND

3a is a one-bedroom mid-terrace house in Harrow (HA1 4ND). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1930-1949 and council tax band C. At 52 m² this is the 3rd smallest of 21 units on EPC record in the building, where floor areas span 43–164 m². The building's EPC ratings span E to C, with this unit at the top. The property has solar panels on record, all of which lower running costs and tend to lift resale appeal. The latest certificate (July 2020) shows a C (score 75), near the top of the C band. When first surveyed in July 2010 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good and lighting went from Average to Very Good.

Held since November 1999 — that's 27 years off the open market, well above the local norm. 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 £304,000 sits 257.6% above the 1999 sale of £85,000. At 52 m² it sits well below the postcode median (97 m² across 20 EPCs), making it one of the more compact homes locally.