101a, Rusthall Avenue, London, W4 1BN

101a is a one-bedroom mid-terrace house in London (W4 1BN). It has a recorded floor area of 70 m² (around 753 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (June 2020) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2018. Between certificates, wall efficiency went from Very Poor to Poor; while roof efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 76). At 70 m² this is the 7th smallest of 11 units on EPC record in the building, where floor areas span 35–91 m². The building's EPC ratings span E to C across 11 units on file. Other recorded features include a conservatory.

Today's modelled estimate of £708,000 is 11.5% below the 2025 sale of £800,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£1,062/sq ft) was about 137.5% above the typical sold price in the postcode. It changed hands recently, sold October 2025 for £800,000. At 70 m² it's 23.1% smaller than the typical home in the postcode (91 m² median across 41 EPCs).