I choose the houses based on my personal desire to stay in them for the long term. It is a matter of material, shape, and design. We prefer prefabs with custom interior decoration and furniture solutions. I search & choose such solutions on the internet. When I like it - I buy it.
Our project is a community with people who lives together and forms a strong neighbourhood. If people decide to live tiny with us, they could buy their own tiny house or rent one of our cabins. One of the criteria is the will to live with a little carbon footprint. For example, we would prefer an owner of an electric car, not a diesel SUV.