166b, Kingston Road, Staines Upon Thames, TW18 1BL

166b is a semi-detached house in Staines Upon Thames (TW18 1BL). It has a recorded floor area of 51 m² (around 549 sq ft) and construction records dating it to 1900-1929. The latest certificate (June 2025) shows a C (score 71). When first surveyed in March 2009 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and lighting went from Very Poor to Very Good. At 51 m² this is the 4th smallest of 16 units on EPC record in the building, where floor areas span 46–159 m². The building's EPC ratings span E to B across 16 units on file.

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. At 51 m² it's 15% smaller than the typical home in the postcode (60 m² median across 15 EPCs). Across 2004–2007, sale prices on this property compounded at 5.9% per year. Today's modelled estimate of £242,000 is 33% above the 2007 sale price.