1 Katherines Cottages, The Street, Belchamp Otten, Sudbury, CO10 7BG

1 Katherines Cottages is a semi-detached house in Belchamp Otten, Sudbury, Sudbury (CO10 7BG). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (February 2022) shows an F (score 25), near the bottom of the EPC scale. The rating has held steady at F across 2 certificates since June 2009. Between certificates, roof efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to D (score 63), a 2-band jump. Main heating runs on dual fuel.

Held since December 1999 — that's 26 years off the open market, well above the local norm. Across 1998–1999, sale prices on this property compounded at 10.7% per year. Today's modelled estimate of £297,000 sits 296% above the 1999 sale of £75,000. On a £-per-square-foot basis, the last sale (£80/sq ft) was about 67.3% below the postcode norm. At 87 m² it's 19.2% larger than the typical home in the postcode (73 m² median across 7 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).