Thx Khun Tina for your quick response. On the 1yr warranty for structure, lets just think of a scenario where, after 2yrs the roof starts leaking during the rainy season... According to the contract that would be my responsibility, which just does not feel right. I do know (because I have seen with my own eyes) the very high quality of the work which Khun Manu does. This is a large part of why I decided to buy. For these reasons I don't expect a problem but would be more comfortable with a longer warranty for building structures.