23 Copthorne Mews, Hayes, UB3 4BN

23 Copthorne Mews is a one-bedroom mid-terrace house in Hayes (UB3 4BN). It has a recorded floor area of 31 m² (around 334 sq ft), construction records dating it to 1967-1975 and council tax band B. The latest certificate (February 2023) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2021. Between certificates, roof efficiency went from Poor to Average; while wall efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity. At 31 m² this is the 14th smallest of 31 units on EPC record in the building, where floor areas span 29–120 m². The building's EPC ratings span E to B across 31 units on file.

Sold February 2023 for £200,000. Across the public record there are 5 sales, relatively high churn for a single property. Across 2006–2023, sale prices on this property compounded at 3% per year. On a £-per-square-foot basis, the last sale (£599/sq ft) was about 56.3% above the typical sold price in the postcode. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.