First, a land developer purchases the rights
to build on a lot from private owners or from the county at Fair Market Value (currently estimated at $10,000 per unit).
Then, the developer can redistribute the
population density for an area without a net change in county-wide density numbers.
This allows for a build-up of population
in a focused region where infrastructure can be cheaper and more easily managed.
The downside to all of this is that
the transfer fees associated with the project become astronomical, which in turn stymies civic development.