Windsor House, Flat 1, Westgate Street, Cardiff, CF10 1DG

Windsor House is a semi-detached house in Cardiff (CF10 1DG). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (August 2010) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2009. Between certificates, hot-water efficiency went from Average to Good and lighting went from Poor to Average; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would push it to C (score 70). The latest certificate is from August 2010, so improvements made since then won't be reflected. At 45 m² this is the 7th smallest of 18 units on EPC record in Windsor House, where floor areas span 23–81 m². The building's EPC ratings span E to C across 18 units on file.

Most recent transfer: June 2020 at £115,000. Across the public record there are 5 sales, relatively high churn for a single property. Across 1997–2020, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £149,000 is 29.6% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£238/sq ft) was about 15.1% above the typical sold price in the postcode. At 45 m² it's 19.7% smaller than the typical home in the postcode (56 m² median across 17 EPCs).