37 Gelli Street, Port Tennant, Swansea, SA1 8NJ

37 Gelli Street is a three-bedroom mid-terrace house in Port Tennant, Swansea, Swansea (SA1 8NJ). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (August 2014) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 4 certificates since August 2010. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Average; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would lift it to B (score 85), a 2-band jump. The latest certificate is from August 2014, so improvements made since then won't be reflected.

Across 2011–2021, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £155,000 is 13.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£170/sq ft) was about 76.1% above the typical sold price in the postcode. Most recent transfer: October 2021 at £137,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.