Real estate probably won't be a part of the post-scarcity economy, otherwise I'd bet on just buying a home in 30 years while forgetting what a mortgage was for.
Hahahaha. Ha.
There's going to be plenty of scarcity to go around for the rest of our lives. And unless you're already in the top 1%, or unless you believe full-on socialism will ever catch on in a country run by and for the benefit of capitalists and corporatists, you can personally expect to see a lot more of it once everything worth doing has been automated.