21 Longworth Avenue, Chesterton, Cambridge, CB4 1GU

21 Longworth Avenue is a three-bedroom detached house in Chesterton, Cambridge, Cambridge (CB4 1GU). It has a recorded floor area of 83 m² (around 893 sq ft), construction records dating it to 2007 onwards and council tax band E. The latest certificate (July 2020) shows a C (score 78), near the top of the C band. The rating has held steady at C across 2 certificates since April 2010. Between certificates, lighting went from Poor to Very Good; while window efficiency dropped from Good to Average. At 83 m² this is the 18th smallest of 60 units on EPC record in the building, where floor areas span 63–166 m². The building's EPC ratings span D to A across 60 units on file.

Across 2003–2013, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £461,000 sits 67.6% above the 2013 sale of £275,000. On a £-per-square-foot basis, the last sale (£308/sq ft) was about 17.2% above the typical sold price in the postcode. At 83 m² it sits well below the postcode median (139 m² across 59 EPCs), making it one of the more compact homes locally. On the market in October 2013 and unlisted since — roughly 13 years.