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

1 Lock Keepers Court is a two-bedroom end-of-terrace house in Cardiff (CF10 3EZ). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 2003-2006 and council tax band E. At 76 m² this is the largest unit on EPC record across 1 Lock Keepers Court (61–76 m²). The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (October 2025) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2018. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while window efficiency dropped from Good to Poor. Main heating runs on electricity.

Held since June 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. Across 2004–2007, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £225,000 sits 54.2% above the 2007 sale of £145,950. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).