297b, Alexandra Avenue, Harrow, HA2 9DX

297b is a two-bedroom mid-terrace house in Harrow (HA2 9DX). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (January 2020) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in January 2009 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Good, lighting went from Good to Very Good and main heating went from Very Poor to Good; while wall efficiency dropped from Poor to Very Poor and roof efficiency dropped from Good to Very Poor. At 61 m² this is the 34th smallest of 69 units on EPC record in the building, where floor areas span 42–78 m². The building's EPC ratings span E to B across 69 units on file. Other recorded features include a balcony.

Held since August 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £294,000 sits 50.8% above the 2007 sale of £194,950.