Flat 2, 11 Marlborough Road, Cardiff, CF23 5BT

Flat 2 is a two-bedroom mid-terrace house in Cardiff (CF23 5BT). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (December 2021) shows a D (score 56), a step below the typical UK home. When first surveyed in September 2010 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Good to Very Good. The recommended improvements would push it to C (score 73). Main heating runs on electricity. At 69 m² this is the 2nd smallest of 3 units on EPC record in the building, where floor areas span 30–87 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 (56 versus a best of 70).

Held since January 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 69 m² the property is well over the postcode median (36 m² across 51 EPCs), placing it in the larger end of the local stock. Across 1995–2007, sale prices on this property compounded at 9.6% per year. Today's modelled estimate of £189,000 is 38% above the 2007 sale price.