17a, Leigh Hall Road, Leigh On Sea, SS9 1RL

17a is a one-bedroom semi-detached house in Leigh On Sea (SS9 1RL). It has a recorded floor area of 66 m² (around 710 sq ft) and construction records dating it to 1900-1929. The latest certificate (March 2019) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in February 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Good; while hot-water efficiency dropped from Very Good to Good and lighting dropped from Poor to Very Poor. The recommended improvements would push it to C (score 75). At 66 m² this is the 16th smallest of 32 units on EPC record in the building, where floor areas span 45–152 m². The building's EPC ratings span F to C across 32 units on file.

It hasn't traded since November 1997, a hold of 29 years that's notably long for the area. 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 £330,000 sits 557.4% above the 1997 sale of £50,200. On a £-per-square-foot basis, the last sale (£71/sq ft) was about 67% below the postcode norm.