20a, Satanita Road, Westcliff On Sea, SS0 8DE

20a is a one-bedroom mid-terrace house in Westcliff On Sea (SS0 8DE). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1900-1929 and council tax band A. At 40 m² this is the 19th smallest of 57 units on EPC record in the building, where floor areas span 14–240 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (May 2023) shows a C (score 73). The rating has held steady at C across 2 certificates since January 2023. Between certificates, window efficiency dropped from Good to Average.

Untraded for 29 years, with the last transfer in October 1997. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £159,000 sits 695% above the 1997 sale of £20,000. On a £-per-square-foot basis, the last sale (£46/sq ft) was about 68.7% below the postcode norm. At 40 m² it sits well below the postcode median (58 m² across 56 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 82% of similar EPCs).