ABSTRACT
Good land-use planning practice estimates the need for land by general land-use category. One of the issues involved in comprehensive land-use planning is the extent to which plans should incorporate a surplus or market factor adjustment. The result of the market factor adjustment is that land area estimated for land-use planning purposes is considerably in excess of land area estimated to be actually developed and occupied. The Oregon data predate Oregon's statewide land-use planning policies and thus reflect vacant land conditions in the absence of statewide planning policies. In general, as city size increases, its natural vacant land supply decreases. Total vacant buildable land in a larger city can be many times that of a smaller city. In terms of planning, one may be persuaded to allocate land such that, at the end of a planning horizon, no more than one-third of the remaining land area is buildable.
