9 Blenheim Close, Upper Cambourne, Cambridge, CB23 6AP

9 Blenheim Close is a two-bedroom semi-detached house in Upper Cambourne, Cambridge, Cambridge (CB23 6AP). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 2003-2006 and council tax band B. At 52 m² this is the smallest unit on EPC record across the building (52–163 m²). The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (October 2019) shows a C (score 76), near the top of the C band. Earlier certificates rated it B (November 2009); the latest reading is one band lower. Between certificates, roof efficiency went from Good to Very Good and lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good.

At 52 m² it sits well below the postcode median (108 m² across 45 EPCs), making it one of the more compact homes locally. Across 2009–2016, sale prices on this property compounded at 4.3% per year. Today's modelled estimate of £225,000 is 15.4% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£348/sq ft) was about 43.6% above the typical sold price in the postcode. Last changed hands 10 years ago, in March 2016.