25a, Rockleigh Avenue, Leigh On Sea, SS9 1LA

25a is a one-bedroom detached house in Leigh On Sea (SS9 1LA). It has a recorded floor area of 45 m² (around 482 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (March 2010) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 65). The latest certificate is from March 2010, so improvements made since then won't be reflected. At 45 m² this is the 4th smallest of 34 units on EPC record in the building, where floor areas span 42–206 m². The building's EPC ratings span F to C across 34 units on file.

Held since July 2004 — that's 22 years off the open market, well above the local norm. Across the public record there are 5 sales, relatively high churn for a single property. Across 1995–2004, sale prices on this property compounded at 14.9% per year. Today's modelled estimate of £215,000 sits 80.7% above the 2004 sale of £119,000. At 45 m² it sits well below the postcode median (91 m² across 33 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs).