21 Chanctonbury Gardens, Sutton, SM2 6RG

21 Chanctonbury Gardens is a one-bedroom end-of-terrace house in Sutton (SM2 6RG). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (December 2018) shows an E (score 53), well below the UK norm with real room to improve. When first surveyed in November 2016 the rating was F, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity. At 47 m² this is the 2nd smallest of 18 units on EPC record in the building, where floor areas span 41–55 m². The building's EPC ratings span E to C, with this unit at the bottom.

Sale prices here have outpaced Sutton HPI: 6.2% per year against 0.1% for the wider region. On a £-per-square-foot basis, the last sale (£490/sq ft) was about 77.1% above the typical sold price in the postcode. Most recent transfer was October 2025 at £248,000 — fresh data. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs).