23 Lock Keepers Court, Blackweir Terrace, Cardiff, CF10 3EZ

23 Lock Keepers Court is a two-bedroom mid-terrace house in Cardiff (CF10 3EZ). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 2003-2006 and council tax band E. The latest certificate (October 2019) returns a B (score 81), comfortably above the UK average. When first surveyed in September 2009 the rating was C, the property has climbed 1 band since. Between certificates, main heating went from Very Poor to Poor; while hot-water efficiency dropped from Very Good to Poor. Main heating runs on electricity. At 66 m² this is the 14th smallest of 36 units on EPC record in the building, where floor areas span 37–84 m². The building's EPC ratings span D to B, with this unit at the top.

Last sale on file: £175,000 in July 2022. 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. Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). Across 2004–2022, sale prices on this property compounded at 1.2% per year. On a £-per-square-foot basis, the last sale (£246/sq ft) was about 22.9% above the typical sold price in the postcode.