So interesting to read about this. I am working on a (side) project to plan and launch a small community of houses built on water, pretty much in a similar way

So interesting to read about this. I am working on a (side) project to plan and launch a small community of houses built on water, pretty much in a similar way. (in my case, the candidate site is the Venice lagoon in Italy). The main advantage is that you can remove most of the senseless regulatory constraints - and if you do it right, there's mostly just upside. Building costs are slightly higher, but you also get other benefits, such as protection from earthquakes. Granted, this has to be done in a water area that is not subject to unusual weather situations. It is not for everybody, sure. But it is something probably worth experimenting with.