26 Carmarthen Street, Llandeilo, SA19 6AN

26 Carmarthen Street is a three-bedroom mid-terrace house in Llandeilo (SA19 6AN). It has a recorded floor area of 188 m² (around 2024 sq ft), construction records dating it to before 1900 and council tax band D. It is a listed building, which means external alterations are tightly controlled but it may qualify for heritage tax reliefs. Other recorded features include a basement. The latest certificate (October 2025) shows a C (score 75), near the top of the C band. When first surveyed in April 2011 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and roof efficiency went from Very Poor to Average; while lighting dropped from Very Good to Good.

At 188 m² the property is well over the postcode median (134 m² across 6 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Across 2006–2011, sale prices on this property compounded at 3.1% per year. Today's modelled estimate of £294,000 sits 78.2% above the 2011 sale of £165,000. On a £-per-square-foot basis, the last sale (£82/sq ft) was about 40.4% above the typical sold price in the postcode. On the market in August 2011 and unlisted since — roughly 15 years.