For example, would you just tax "new" purchases more heavily? Or scale it into existing homes? Give caveats for fixed-income (elderly and disabled)?
Politically, this seems like a tough road, even if it's the best choice. You have to essentially convince people to vote against their own economic self-interest. I think current tax policy around homes is curious because it's one of the few areas that there is a rather clear consensus around economists that it's bad policy that incentivizes the wrong actions, yet we can't seem to change them.