3 Castle Lofts, Castle Street, Swansea, SA1 1HF

3 Castle Lofts is a one-bedroom mid-terrace house in Swansea (SA1 1HF). It has a recorded floor area of 64 m² (around 689 sq ft) and construction records dating it to 1976-1982. The latest certificate (May 2026) shows a C (score 73). The rating has held steady at C across 2 certificates since June 2019. Between certificates, wall efficiency went from Poor to Average; while hot-water efficiency dropped from Good to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 84). Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition. At 64 m² this is the 2nd smallest of 8 units on EPC record in the building, where floor areas span 55–104 m². The building's EPC ratings span D to B across 8 units on file.

Untraded for 21 years, with the last transfer in March 2005. Across 2002–2005, sale prices on this property compounded at 9.8% per year. Today's modelled estimate of £142,000 is 42% above the 2005 sale price. On a £-per-square-foot basis, the last sale (£145/sq ft) was about 31.3% above the typical sold price in the postcode.