24 Cowen Avenue, Harrow, HA2 0LU

24 Cowen Avenue is a two-bedroom mid-terrace house in Harrow (HA2 0LU). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1950-1966 and council tax band C. At 61 m² this is the 26th smallest of 71 units on EPC record in the building, where floor areas span 44–94 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (40 versus a best of 81). The latest certificate (April 2017) shows an E (score 40), well below the UK norm with real room to improve. Earlier certificates rated it C (May 2015); the latest reading is 2 bands lower. Between certificates, hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity.

Untraded for 16 years, with the last transfer in March 2010. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2002–2010, sale prices on this property compounded at 3.1% per year. Today's modelled estimate of £261,000 sits 108.8% above the 2010 sale of £125,000. On a £-per-square-foot basis, the last sale (£190/sq ft) was about 20.3% below the postcode norm.