Harlech House, Flat 9, Heol Isaf, Radyr, Cardiff, CF15 8AP

Harlech House is a two-bedroom semi-detached house in Radyr, Cardiff, Cardiff (CF15 8AP). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1976-1982 and council tax band D. At 75 m² this is the largest unit on EPC record across Harlech House (70–75 m²). The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (62 versus a best of 81). Other recorded features include a loft. The latest certificate (November 2013) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79). The latest certificate is from November 2013, so improvements made since then won't be reflected.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold November 2022 for £162,000. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1999–2022, sale prices on this property compounded at 4.7% per year. Today's modelled estimate of £186,000 is 14.8% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£201/sq ft) was about 21.9% above the typical sold price in the postcode.