Marlborough House, Flat 11, Westgate Street, Cardiff, CF10 1DE

Marlborough House is a three-bedroom mid-terrace house in Cardiff (CF10 1DE). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1930-1949 and council tax band F. At 87 m² this is the 14th smallest of 15 units on EPC record in Marlborough House, where floor areas span 26–90 m². The building's EPC ratings span G to C, with this unit at the top. Other recorded features include a balcony. The latest certificate (July 2021) shows a C (score 77), near the top of the C band. The rating has held steady at C across 2 certificates since April 2010. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would push it to B (score 81).

Across 2001–2016, sale prices on this property compounded at 0.9% per year. Today's modelled estimate of £207,000 sits 51.6% above the 2016 sale of £136,500. On a £-per-square-foot basis, the last sale (£146/sq ft) was about 21% below the postcode norm. At 87 m² it's 27% larger than the typical home in the postcode (69 m² median across 14 EPCs). Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Last changed hands 10 years ago, in January 2016.