17 Gwilym Road, Cwmllynfell, Swansea, SA9 2GH

17 Gwilym Road is a semi-detached house in Cwmllynfell, Swansea, Swansea (SA9 2GH). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (March 2020) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in January 2014 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Average, roof efficiency went from Very Poor to Very Good and hot-water efficiency went from Very Poor to Average; while main heating dropped from Good to Average. The recommended improvements would push it to C (score 77). Main heating runs on oil.

Across 2020–2022, sale prices on this property compounded at 24.6% per year. Today's modelled estimate of £164,000 is 31.7% below the 2022 sale of £240,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£206/sq ft) was about 161.8% above the typical sold price in the postcode. At 108 m² it's 24.1% larger than the typical home in the postcode (87 m² median across 21 EPCs). Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Sold February 2022 for £240,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One historical planning record sits against the property in 2000.