99a, Main Road, St Lawrence, Southminster, CM0 7NA

99a is a two-bedroom detached house in St. Lawrence, Southminster, Southminster (CM0 7NA). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (January 2020) shows an E (score 46), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since May 2009. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Poor to Average; while wall efficiency dropped from Good to Average and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on electricity. At 66 m² this is the 9th smallest of 30 units on EPC record in the building, where floor areas span 49–228 m². The building's EPC ratings span G to C across 30 units on file. Other recorded features include notable views.

On the market in January 2018 and unlisted since — roughly 9 years. At 66 m² it's 26.7% smaller than the typical home in the postcode (90 m² median across 29 EPCs). Today's modelled estimate of £202,000 is 27% above the 2018 sale price.