This would actually be better addressed to Aboriginal Affairs and Northern Development Canada. They deal with all of the treaty aspects with respect to first nations. We just deliver housing services on reserve.
The big issue on reserve with respect to the provision of market housing is the ownership and tenure of the land and the ability to pledge that as security. It's probably a little more complicated, but the Department of Aboriginal Affairs and Northern Development could give you a much more fulsome description of the treaty process and the consequential implications of that.