3a, Gladstone Terrace, Grantham, NG31 8BW

3a is a two-bedroom end-of-terrace house in Grantham (NG31 8BW). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1900-1929 and council tax band A. At 68 m² this is the 19th smallest of 40 units on EPC record in the building, where floor areas span 27–307 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (November 2023) shows a C (score 71). When first surveyed in February 2009 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

Held since February 2001 — that's 25 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. At 68 m² it's 17.2% smaller than the typical home in the postcode (82 m² median across 39 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £139,000 sits 91.7% above the 2001 sale of £72,500.