13 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD

13 Bryn Avenue is a detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1BD). It has a recorded floor area of 110 m² (around 1184 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (April 2021) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in October 2012 the rating was G, the property has climbed 3 bands since. Between certificates, hot-water efficiency went from Very Poor to Good, lighting went from Good to Very Good and main heating went from Average to Good. The recommended improvements would lift it to B (score 89), a 2-band jump.

Across 2004–2017, sale prices on this property compounded at 2.1% per year. Today's modelled estimate of £254,000 sits 88.1% above the 2017 sale of £135,000. On a £-per-square-foot basis, the last sale (£114/sq ft) was about 20.6% above the typical sold price in the postcode. At 110 m² it's 15.8% larger than the typical home in the postcode (95 m² median across 20 EPCs). On the market in September 2017 and unlisted since — roughly 9 years.