290a, Leigh Road, Leigh On Sea, SS9 1BW

290a is a one-bedroom mid-terrace house in Leigh On Sea (SS9 1BW). It has a recorded floor area of 29 m² (around 312 sq ft), construction records dating it to 1900-1929 and council tax band A. At 29 m² this is the smallest unit on EPC record across the building (29–57 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (55 versus a best of 71). The latest certificate (September 2025) shows a D (score 55), a step below the typical UK home. The rating has held steady at D across 2 certificates since December 2011. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 72). Main heating runs on electricity.

Across 1996–2015, sale prices on this property compounded at 9% per year. Today's modelled estimate of £166,000 sits 62.7% above the 2015 sale of £102,000. On a £-per-square-foot basis, the last sale (£327/sq ft) was about 98.6% above the typical sold price in the postcode. At 29 m² it sits well below the postcode median (48 m² across 10 EPCs), making it one of the more compact homes locally. Last sold in April 2015, so it's been off the market for around 11 years.