The Household Relocation Model is similar in form to the Employment Relocation Model described above. The same algorithm is used, but with rates or coefficients applicable to each household type. For households, relocation probabilities are estimated from the Census Current Population Survey, which provides a national database on which annual relocation rates are computed by type of household. This will reflect differential relocation rates for renters and owners, and households at different life stages.
Application of the Household Relocation Model requires subtracting mover households by type from the housing stock by cell, and adding them to the pool of new households by type estimated in the Demographic Transition Model. In the database, this is accomplished by setting the location field for the moving households to a null value. The combination of new and moving households serves as a population of households to be located by the Household Location Choice Model. Housing vacancy is updated as movers are subtracted, making the housing available for occupation in the household location and housing type choice model.