Flat 3, 5 Quadrant Road, Richmond, TW9 1DH

Flat 3 is a one-bedroom mid-terrace house in Richmond (TW9 1DH). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1900-1929 and council tax band C. At 42 m² this is the smallest unit on EPC record across the building (42–53 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (November 2013) shows an E (score 46), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 58). Main heating runs on electricity. The latest certificate is from November 2013, so improvements made since then won't be reflected.

Held since May 2008 — that's 18 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. At 42 m² it's 29.4% smaller than the typical home in the postcode (60 m² median across 12 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). 3 planning records sit against the property, 0 approved, 0 refused. Across 2005–2008, sale prices on this property compounded at 7% per year. Today's modelled estimate of £385,000 is 39.7% above the 2008 sale price.