4 Coldstream Terrace, Cardiff, CF11 6LJ

4 Coldstream Terrace is a one-bedroom mid-terrace house in Cardiff (CF11 6LJ). It has a recorded floor area of 28 m² (around 304 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (October 2008) shows a G (score 5), near the bottom of the EPC scale. The recommended improvements would lift it to E (score 41), a 2-band jump. Main heating runs on electricity. The latest certificate is from October 2008, so improvements made since then won't be reflected. At 28 m² this is the 2nd smallest of 32 units on EPC record in the building, where floor areas span 24–280 m². The building's EPC ratings span G to C, with this unit at the bottom. On EPC score it ranks last in the building (5 versus a best of 79).

Held since November 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 28 m² it sits well below the postcode median (55 m² across 31 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 1999–2009, sale prices on this property compounded at 17.3% per year. On a £-per-square-foot basis, the last sale (£988/sq ft) was about 1269.9% above the typical sold price in the postcode.