The proposed structure is that the land remains leasehold while the house or building interest is dealt with separately. How that applies to a particular buyer should be confirmed from the actual title and lease documents, not from a general property description. An independent Thai lawyer should verify exactly what you would acquire and how it will be recorded.
Thai Life Beach House Q&A
Can a Foreign Buyer Own the House?
Useful next steps
Use this answer as a practical starting point for this exact property. The owner can confirm current price, availability, inclusions and viewing details; legal, leasehold, tax and inspection matters should be independently verified.
