51 Watermark, Ferry Road, Cardiff, CF11 0JU

51 Watermark is a mid-terrace house in Cardiff (CF11 0JU). It has a recorded floor area of 131 m² (around 1410 sq ft) and construction records dating it to 2007 onwards. The latest certificate (September 2022) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 3 certificates since January 2009. Between certificates, lighting went from Poor to Good; while window efficiency dropped from Good to Average. At 131 m² this is the 46th smallest of 50 units on EPC record in the building, where floor areas span 27–201 m². The building's EPC ratings span C to B, with this unit at the top.

At 131 m² the property is well over the postcode median (68 m² across 49 EPCs), placing it in the larger end of the local stock. Across 2009–2022, sale prices on this property compounded at -7.7% per year. Today's modelled estimate of £207,000 is 38% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£106/sq ft) was about 56.1% below the postcode norm. Sold November 2022 for £150,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.