Maybe instead of a credit for occupying a property you own, add a tax on income from rental properties that is earmarked for the kind of infrastructure that an area needs to accommodate a growing population including mass transit. There would have to be some protections in place to prevent landlords from passing that cost directly to tenants but I’m not smart enough to know how to do that.

I think landlord income should be taxed differently from actual income. We tax people differently for investment income (and it’s lower). We could make up a separate category for this as well.