Seems to me a strong solution is high density housing, being that should generate the most affordable and fastest growth in housing units. This density should be focused on infill in the urban core, not only because it is compatible with urban living and existing density (to address NIMBY concerns) but because the urban core has the best opportunity to provide walkable communities, adding another layer of affordability with "transit." Imagine the savings derived from ditching an automobile for most purposes

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I believe the State is complicit in the affordable housing shortage due to development friendly Florida encouraging urban sprawl that allows developers to easily plow down virgin forests and farmland to access "cheap" land with few impediments. This will do little to solve an affordable housing crisis due to much lower density and the expense of being automobile dependent, likely over ever increasing distances. If we had disciplined growth management, i.e. did more to prevent rezoning of farmland and forests into subdivisions, it would be more attractive to build increased density in urban cores than sprawl in exurban areas further and further out.
Too add, we are effectively subsidizing urban sprawl far more than affordable housing by building roads, utilities, other infrastructure, schools and other governmental support functions at only a fraction of the cost to developers who benefit from same. If that same investment was made in the urban core to level the playing field for building affordable housing, I believe this problem would be much less of an issue.