17 Petersfield Mansions, Petersfield, Cambridge, CB1 1BB

17 Petersfield Mansions is a one-bedroom mid-terrace house in Cambridge (CB1 1BB). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (July 2022) shows a C (score 77), near the top of the C band. The rating has held steady at C across 2 certificates since April 2010. Between certificates, hot-water efficiency went from Poor to Average and lighting went from Average to Very Good; while main heating dropped from Good to Poor. Main heating runs on electricity. At 42 m² this is the 6th smallest of 65 units on EPC record in the building, where floor areas span 38–185 m². The building's EPC ratings span E to B across 65 units on file.

Untraded for 30 years, with the last transfer in October 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 £297,000 sits 257.8% above the 1996 sale of £83,000. On a £-per-square-foot basis, the last sale (£184/sq ft) was about 21% below the postcode norm. At 42 m² it's 27.3% smaller than the typical home in the postcode (58 m² median across 68 EPCs).