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In some areas it may be possible to increase average density of single family home developments using land value tax plus an occupancy deduction to discourage leapfrog development and excess vacancies, to bring commuter neighborhoods closer to the urban core, with infrastructure on grid or other cost minimizing geometry.

In inner city areas where wages make up a substantially smaller fraction of gross receipts in comparison wealthy suburbs, the excess burden of state and local sales taxes on workers is substantially higher. Replacing state and local sales tax with land value tax may reveal exurban sprawl was motivated by desire to avoid austerity rather than desire for more space, and that middle class really doesn't mind living a bit closer to cities.

It should be possible to design multi-story buildings which don't unexpectedly collapse in 21st century. Perhaps public sector urban building associations can construct and maintain high quality vertical apartment cores and elevators, but auction long term leaseholds which allow owners to privately renovate and mortgage improvements for their floor or unit similar to private condos. Partial local public ownership of building associations could then be used to assert leasehold fees are always sufficient to cover regular inspections and repairs. Partial public ownership could also be used to force a sale if owners have not occupied the property in several years, died, or emigrated in order to ensure increase housing availability.