<|start_header_id|>assistant<|end_header_id|> Here is a summary of the property description in a single paragraph: Twyn Uchaf offers a unique opportunity to build a contemporary four-bedroom home on the West coast of Wales, with breathtaking sea views and approximately 2,350 sq ft of internal living space. Designed by renowned architect Rural Office, the property combines architectural pedigree, design integrity, and a stunning natural setting to create a truly remarkable opportunity. The design takes inspiration from the surrounding coast and countryside, with a natural slate roof, timber cladding, and wild landscaping that echoes the dunes and heathland of the Welsh coast. The plot lies within the UNESCO Dyfi Biosphere, an area of outstanding ecological and cultural importance, and is just a short walk from the Dyfi National Nature Reserve, Ynyslas Beach, and the ancient, petrified forest. The site benefits from full planning permission for a holiday home, with estimated build costs ranging from £450,000, and the design can be tailored to suit individual preferences and specifications.