17a, Rockleigh Avenue, Leigh On Sea, SS9 1LA

17a is a two-bedroom mid-terrace house in Leigh On Sea (SS9 1LA). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 1900-1929. The latest certificate (March 2020) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since February 2010. Between certificates, main heating went from Average to Good; while lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 79). At 60 m² this is the 13th 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.

Across 2000–2014, sale prices on this property compounded at 7.5% per year. Today's modelled estimate of £287,000 sits 55.1% above the 2014 sale of £185,000. On a £-per-square-foot basis, the last sale (£286/sq ft) was about 41.5% above the typical sold price in the postcode. At 60 m² it sits well below the postcode median (91 m² across 33 EPCs), making it one of the more compact homes locally. Last sold in December 2014, so it's been off the market for around 11 years.