3 Clos Elphan, St Mellons, Cardiff, CF3 2AE

3 Clos Elphan is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 2AE). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2007 onwards and council tax band H. At 47 m² this is the smallest unit on EPC record across the building (47–228 m²). The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (May 2015) shows a D (score 61), on the cusp of jumping into the C band. Main heating runs on electricity. The latest certificate is from May 2015, so improvements made since then won't be reflected.

Held since March 2004 — that's 22 years off the open market, well above the local norm. Across 2001–2004, sale prices on this property compounded at 9% per year. Today's modelled estimate of £637,000 sits 67.6% above the 2004 sale of £380,000. On a £-per-square-foot basis, the last sale (£751/sq ft) was about 194.5% above the typical sold price in the postcode. At 47 m² it sits well below the postcode median (216 m² across 5 EPCs), making it one of the more compact homes locally. One planning record on file: an extension approved in 2005. Past consents include an extension, meaningful when judging how the property has evolved.