Windsor House, Flat 17, Westgate Street, Cardiff, CF10 1DG

Windsor House is a mid-terrace house in Cardiff (CF10 1DG). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (January 2023) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2009. Between certificates, window efficiency went from Poor to Average and lighting went from Average to Very Good. The recommended improvements would push it to C (score 76). At 24 m² this is the 2nd 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.

Held since March 2002 — that's 24 years off the open market, well above the local norm. Across 1997–2002, sale prices on this property compounded at 15.6% per year. Today's modelled estimate of £133,000 sits 174.2% above the 2002 sale of £48,500. At 24 m² it sits well below the postcode median (56 m² across 17 EPCs), making it one of the more compact homes locally.