30a, High Street, Sunninghill, Ascot, SL5 9NE

30a is a detached house in Sunninghill, Ascot, Ascot (SL5 9NE). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (August 2021) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2009. Between certificates, window efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would lift it to C (score 72), a 2-band jump. At 80 m² this is the 11th smallest of 12 units on EPC record in the building, where floor areas span 29–80 m². The building's EPC ratings span F to C across 12 units on file.

Across 2005–2018, sale prices on this property compounded at 3.5% per year. Today's modelled estimate of £459,000 is 16.5% below the 2018 sale of £550,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£639/sq ft) was about 70% above the typical sold price in the postcode. At 80 m² it's 28.5% larger than the typical home in the postcode (62 m² median across 11 EPCs). On the market in January 2018 and unlisted since — roughly 8 years.