77a, Rainsford Lane, Chelmsford, CM1 2QS

77a is a two-bedroom semi-detached house in Chelmsford (CM1 2QS). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1976-1982 and council tax band B. At 50 m² this is the 5th smallest of 21 units on EPC record in the building, where floor areas span 47–139 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 43). The latest certificate (February 2018) shows a C (score 74).

Held since November 1995 — that's 31 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 £192,000 sits 392.3% above the 1995 sale of £39,000. On a £-per-square-foot basis, the last sale (£72/sq ft) was about 69% below the postcode norm. At 50 m² it sits well below the postcode median (76 m² across 20 EPCs), making it one of the more compact homes locally.