21 Abernethy Quay, Maritime Quarter, Swansea, SA1 1UF

21 Abernethy Quay is a mid-terrace house in Maritime Quarter, Swansea, Swansea (SA1 1UF). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1983-1990 and council tax band D. At 41 m² this is the smallest unit on EPC record across the building (41–99 m²). The building's EPC ratings span D to B across 40 units on file. The latest certificate (February 2019) shows a C (score 70). Earlier certificates rated it B (February 2009); the latest reading is one band lower. Between certificates, hot-water efficiency dropped from Very Good to Good and lighting dropped from Good to Very Poor.

At 41 m² it sits well below the postcode median (60 m² across 39 EPCs), making it one of the more compact homes locally. Last sale on file: £130,000 in April 2023. Across the public record there are 5 sales, relatively high churn for a single property. On a £-per-square-foot basis, the last sale (£295/sq ft) was about 41.9% above the typical sold price in the postcode.