21 Carlotta Way, Cardiff, CF10 5FY

21 Carlotta Way is a one-bedroom mid-terrace house in Cardiff (CF10 5FY). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (February 2020) shows a C (score 71). When first surveyed in September 2009 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Average and lighting went from Good to Very Good; while window efficiency dropped from Good to Average and main heating dropped from Poor to Very Poor. The recommended improvements would push it to B (score 82). Main heating runs on electricity. At 47 m² this is the 10th smallest of 49 units on EPC record in the building, where floor areas span 41–90 m². The building's EPC ratings span D to B across 49 units on file.

It changed hands recently, sold August 2025 for £113,500. Across 2002–2025, sale prices on this property compounded at 1.5% per year. Today's modelled estimate of £128,000 is 12.8% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£224/sq ft) was about 20.8% above the typical sold price in the postcode. At 47 m² it's 24.2% smaller than the typical home in the postcode (62 m² median across 48 EPCs).