9b, Glyn Coed Road, Cardiff, CF23 7DX

9b is a one-bedroom semi-detached house in Cardiff (CF23 7DX). It has a recorded floor area of 39 m² (around 420 sq ft), construction records dating it to 1967-1975 and council tax band B. At 39 m² this is the smallest unit on EPC record across the building (39–90 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (60 versus a best of 75). The latest certificate (June 2019) shows a D (score 60), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2008); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Good; while wall efficiency dropped from Average to Poor and roof efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 73).

Across 2002–2006, sale prices on this property compounded at 65.4% per year. Today's modelled estimate of £258,000 is 19.9% below the 2006 sale of £322,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£767/sq ft) was about 302.2% above the typical sold price in the postcode. Held since January 2006 — that's 20 years off the open market, well above the local norm. Across the public record there are 6 sales, relatively high churn for a single property. At 39 m² it sits well below the postcode median (61 m² across 7 EPCs), making it one of the more compact homes locally. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.