11 Carlotta Way, Cardiff, CF10 5FY

11 Carlotta Way is an end-of-terrace house in Cardiff (CF10 5FY). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 2003-2006 and council tax band E. At 79 m² this is the 39th 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, with this unit at the bottom. The latest certificate (January 2025) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (January 2009); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity.

At 79 m² the property is well over the postcode median (59 m² across 48 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). Across 2014–2018, sale prices on this property compounded at 3.4% per year. Today's modelled estimate of £163,000 is 22.6% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£156/sq ft) was about 15.8% below the postcode norm. 8 years since the last transfer (January 2018).