Flat 3, 43 Semilong Road, Northampton, NN2 6BT

Flat 3 is a mid-terrace house in Northampton (NN2 6BT). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to before 1900 and council tax band A. At 52 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 35–59 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (74 versus a worst of 48). The latest certificate (August 2022) shows a C (score 74). When first surveyed in November 2012 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Average to Very Good.

Held since June 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 £122,000 sits 510% above the 1999 sale of £20,000. On a £-per-square-foot basis, the last sale (£36/sq ft) was about 71.1% below the postcode norm. At 52 m² it's 28.4% larger than the typical home in the postcode (41 m² median across 38 EPCs).