Yes, you still need to solve the problem with 'money', or more accurately a tax. That tax is based on the assessed land value using market knowledge, but it would ideally be set to drive down the price of land to zero. However since we don't live in a world of spherical cow, tax would be set below that ideal to avoid land abandonment.

This is not even new by the way. The crisis we face is the same as in the 19th century when Land Value Tax and Georgism was proposed.