21 Mariners Way, Cambridge, CB4 1BN

21 Mariners Way is a two-bedroom semi-detached house in Cambridge (CB4 1BN). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1991-1995 and council tax band D. At 79 m² this is the 2nd smallest of 14 units on EPC record in the building, where floor areas span 73–140 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (October 2023) shows a C (score 74). The rating has held steady at C across 2 certificates since April 2013. Between certificates, hot-water efficiency went from Average to Good.

Held since March 2006 — that's 20 years off the open market, well above the local norm. Across 1999–2006, sale prices on this property compounded at 9.4% per year. Today's modelled estimate of £393,000 sits 74.7% above the 2006 sale of £225,000. On a £-per-square-foot basis, the last sale (£265/sq ft) was about 15.7% above the typical sold price in the postcode. At 79 m² it sits well below the postcode median (117 m² across 13 EPCs), making it one of the more compact homes locally.