9 Waterloo Road, Cardiff, CF23 5AD

9 Waterloo Road is a two-bedroom mid-terrace house in Cardiff (CF23 5AD). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1900-1929 and council tax band D. At 74 m² this is the 2nd smallest of 6 units on EPC record in the building, where floor areas span 63–170 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (73 versus a worst of 52). The latest certificate (June 2025) shows a C (score 73). The rating has held steady at C across 5 certificates since April 2009. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good.

Untraded for 20 years, with the last transfer in February 2006. At 74 m² it sits well below the postcode median (146 m² across 5 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the top 10% of properties in this postcode. Across 2004–2006, sale prices on this property compounded at 35% per year. Today's modelled estimate of £228,000 is 26.7% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£226/sq ft) was about 15.8% above the typical sold price in the postcode.