18 Calthorpe Gardens, Sutton, SM1 3DF

18 Calthorpe Gardens is a two-bedroom semi-detached house in Sutton (SM1 3DF). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1950-1966 and council tax band C. At 57 m² this is the 2nd smallest of 29 units on EPC record in the building, where floor areas span 43–103 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (January 2015) shows a C (score 70). When first surveyed in March 2010 the rating was F, the property has climbed 3 bands since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Average to Good and hot-water efficiency went from Average to Very Good. The latest certificate is from January 2015, so improvements made since then won't be reflected.

At 57 m² it's 18.6% smaller than the typical home in the postcode (70 m² median across 28 EPCs). Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Across 2010–2020, sale prices on this property compounded at 6.8% per year. Today's modelled estimate of £365,000 is 14.1% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£522/sq ft) was about 86.1% above the typical sold price in the postcode. Last sale on file: £320,000 in February 2020.