Flat 1, 11 Marlborough Road, Cardiff, CF23 5BT

Flat 1 is a mid-terrace house in Cardiff (CF23 5BT). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1900-1929 and council tax band D. At 87 m² this is the largest unit on EPC record across the building (30–87 m²). The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (July 2010) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 71). The latest certificate is from July 2010, so improvements made since then won't be reflected.

It hasn't traded since October 2010, a hold of 16 years that's notably long for the area. Across the public record there are 5 sales, relatively high churn for a single property. At 87 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 1996–2010, sale prices on this property compounded at 9.6% per year. Today's modelled estimate of £237,000 is 41.1% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£180/sq ft) was about 20.7% below the postcode norm.