2011 Housing Planning Study - Inventory Report

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HOUSING TRENDS Here we turn to the long-range view of Hawaii housing stock estimates. The exercise was aimed at reconciling tax map and Census data as much as it was to develop a way to look at annual changes in housing stock. TOTAL HOUSING UNITS The total number of housing units in Hawaii, regardless of their current use or availability to solve housing problems, has not been an issue in Housing Policy Studies of the past. The special-purpose inventories attempted to gather data only on the units that could be identified as being "in the market'. Total housing units includes all residential units including hotel and motels, visitor condominiums, bed-and-breakfast units, temporary visitor rentals, migrant worker housing, residential institutions, and others. Typically, the Census begins with total units, then classifies those as occupied or vacant, and then by types of occupied and vacant residential units. Figure 2 shows a modeled set of "total housing units figures taken from the Census in 1990, 2000 and 2010, and from the American Community Survey from 2002 through 2009. Figure 2: Total Housing Units, 1990-2010 550,000 Kauai Maui 500,000 Hawaii Honolulu 450,000 —State 400,000 350,000 300,000 250,000 200,000 0 0 W m 0 0 W m 0 of m m m m m m m m m 0 0 0 0 0 0 0 0 0 0 . M m m m m m m m m m 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N N N N N N N N Source: ACS Details shown in Appendix. The results are as expected. The total number of residential units in the state grew by about twelve percent in the nineties and then by another seven percent in the last decade. The growth rate for the nineties can only be spread linearly across that decade. ASCS data allows us to see the pattern of growth between 2000 and 2010. It grew slowly in the first four years, Hawari Housing Planning Study,2011 —Inventory Report Page 14 0 SMS, Inc. November,2011