Float home living in the Lower Mainland

Here in Metro Vancouver, our land has natural and planned boundaries where homes can’t be built, such as parks and the agricultural land reserve. We’re also hemmed in by mountains, the U.S. border and bodies of water. In fact, the Lower Mainland is surrounded by water in the form of rivers, oceans and lakes.
Are we ignoring this abundant supply of water that can offer more affordable home options in desirable locations? I’m not talking about a derelict sailboat bobbing on ancho