15a, Williams Road, Bosham, Chichester, PO18 8JR

15a is a detached house in Bosham, Chichester, Chichester (PO18 8JR). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (June 2018) shows an E (score 39), well below the UK norm with real room to improve. When first surveyed in May 2010 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Poor to Very Good; while roof efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity.

Sold March 2020 for £168,000. Across the public record there are 4 sales, relatively high churn for a single property. At 50 m² it's 16.7% smaller than the typical home in the postcode (60 m² median across 25 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Across 2015–2020, sale prices on this property compounded at 55.5% per year. Today's modelled estimate of £201,000 is 19.6% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£312/sq ft) was about 31.8% above the typical sold price in the postcode.