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

2 Gelli Street is a detached house in Port Tennant, Swansea, Swansea (SA1 8NJ). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to 1900-1929. The latest certificate (December 2022) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in February 2016 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 73). At 54 m² this is the 3rd smallest of 38 units on EPC record in the building, where floor areas span 43–106 m². The building's EPC ratings span E to C across 38 units on file.

At 54 m² it sits well below the postcode median (81 m² across 37 EPCs), making it one of the more compact homes locally. Last sale on file: £100,000 in April 2020. Across the public record there are 5 sales, relatively high churn for a single property. Across 2001–2020, sale prices on this property compounded at 8.8% per year. Today's modelled estimate of £117,000 is 17% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£172/sq ft) was about 78.5% above the typical sold price in the postcode. One historical planning record sits against the property in 2025.