1 William Street, Totterdown, Bristol, BS3 4TU

1 William Street is a detached house in Totterdown, Bristol, Bristol (BS3 4TU). It has a recorded floor area of 94 m² (around 1015 sq ft) and construction records dating it to 1950-1966. The latest certificate (March 2009) shows an E (score 39), well below the UK norm with real room to improve. When first surveyed in March 2009 the rating was G, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Poor and main heating went from Very Poor to Good. The latest certificate is from March 2009, so improvements made since then won't be reflected. At 94 m² this is the 11th smallest of 20 units on EPC record in the building, where floor areas span 70–129 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (39 versus a best of 72).

Untraded for 26 years, with the last transfer in March 2000. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £354,000 sits 156.5% above the 2000 sale of £138,000. On a £-per-square-foot basis, the last sale (£136/sq ft) was about 28.7% below the postcode norm. One planning record on file: change of use to residential approved in 2000. Past consents include change of use to residential, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs).