4 Hartington Court, Hartington Grove, Cambridge, CB1 7TZ

4 Hartington Court is a one-bedroom semi-detached house in Cambridge (CB1 7TZ). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1967-1975 and council tax band B. At 40 m² this is the smallest unit on EPC record across the building (40–57 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (62 versus a best of 72). Other recorded features include a balcony. The latest certificate (December 2018) shows a D (score 62), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2008); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Very Good to Good.

It hasn't traded since August 2006, a hold of 20 years that's notably long for the area. Today's modelled estimate of £237,000 sits 58% above the 2006 sale of £150,000. On a £-per-square-foot basis, the last sale (£348/sq ft) was about 50% above the typical sold price in the postcode.