Seniors would like to build without basements

Warren has some questions about the feasibility of slab-on-grade construction in the Niagara region. As Paul Duffy pointed out, there’s really no reason why we can’t build this way in Canada. What are your thoughts on basement-free buildings?

I have formed a group here in Niagara on the Lake that wish to downsize from there large homes and build a community of about 10 to 15 1,400 to 1,500 sq ft homes with no basements. I am having some difficulty in convincing them that there is a void in the system for this type of housing. We are all seniors and do not want the next step in our lives to be herded into a 900 sq ft assisted living block where one can not bring many of there life long treasures with them ( paintings, furniture, etc). Do you have any factual data to support my position?
Surely there is new technology that makes it more cost efficient, to say nothing for ongoing costs, because you are not heating a basement you hardly use. Appreciate your input. Cheers, Warren