11a, Gibbon Road, Kingston Upon Thames, KT2 6AD

11a is a five-bedroom detached house in Kingston Upon Thames (KT2 6AD). It has a recorded floor area of 106 m² (around 1141 sq ft), construction records dating it to 1900-1929 and council tax band F. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal. Other recorded features include a basement. Our model identifies extension potential, subject to local planning policy. The latest certificate (February 2016) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2011. Between certificates, roof efficiency went from Poor to Average, window efficiency went from Poor to Average and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 83), a 3-band jump. The latest certificate is from February 2016, so improvements made since then won't be reflected.

Held since April 2000 — that's 26 years off the open market, well above the local norm. Across 1999–2000, sale prices on this property compounded at 40.3% per year. Today's modelled estimate of £1,084,000 sits 294.2% above the 2000 sale of £275,000. On a £-per-square-foot basis, the last sale (£241/sq ft) was about 50.3% below the postcode norm. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, a basement excavation and a loft conversion, meaningful when judging how the property has evolved.