Apartment 3, 57 Palmerston Road, Sutton, SM1 4QL

Apartment 3 is a one-bedroom detached house in Sutton (SM1 4QL). It has a recorded floor area of 29 m² (around 312 sq ft) and council tax band B. At 29 m² this is the smallest unit on EPC record across the building (29–47 m²). The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (66 versus a best of 81). Other recorded features include a balcony. The latest certificate (June 2017) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it B (October 2015); the latest reading is 2 bands lower. Between certificates, hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. Main heating runs on electricity: electricity, unspecified tariff.

At 29 m² it sits well below the postcode median (68 m² across 15 EPCs), making it one of the more compact homes locally. On a £-per-square-foot basis, the last sale (£689/sq ft) was about 29.6% above the typical sold price in the postcode. Last sold in December 2015, so it's been off the market for around 10 years.