89a, Cavendish Road, Cambridge, CB1 3AE

89a is an end-of-terrace house in Cambridge (CB1 3AE). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (September 2025) shows a D (score 59), a step below the typical UK home. When first surveyed in May 2011 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and main heating went from Average to Good; while window efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 71). Main heating runs on electricity. At 46 m² this is the 4th smallest of 65 units on EPC record in the building, where floor areas span 28–133 m². The building's EPC ratings span G to C across 65 units on file.

It hasn't traded since October 2005, a hold of 21 years that's notably long for the area. At 46 m² it sits well below the postcode median (73 m² across 64 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £390,000 is 47.2% above the 2005 sale price. On a £-per-square-foot basis, the last sale (£535/sq ft) was about 108% above the typical sold price in the postcode.