Concrete submarine is a website that has an information for their floating homes square meter prices. You can check here http://portugalgoldenvisass.com/4-preferrable-investment-options-for-portugal-golden-visa/ for Investment Options for Portugal Golden Visa. They have a detail of see structure with given double ideas in link. You can also book your slots for more information
Thanks for offering to me about for starting work of real estate i dont started because i cant invested at any other business. so you will contact to any other person who can invested.
I think you want to know cost about for floating real estate. but i dont know because this not related to and my filed so you can go on google and search same as it is.