Provides that when the zoning of any unincorporated territory that as of January 1, 2008: (1) Is located in a home rule charter county with a population over one million;

(2) Contains no residents;

(3) Is entirely surrounded by the territory of one incorporated code city; and

(4) Is not part of the urban growth area of the surrounding city, is changed by the county to allow residential development, or is changed by the county to allow more dense residential development, the territory shall immediately be deemed as annexed to the surrounding code city and that city shall zone the annexed territory to allow, at a minimum, six dwelling units per acre.