Occupancy Characteristics

Share of Housing Units, by Occupancy Level

Santa Clara & San Mateo Counties, California, and the United States | 2019

Data Source:

United States Census Bureau, American Community Survey PUMS


Silicon Valley Institute for Regional Studies

Data are from the United States Census Bureau, American Community Survey 1-Year Estimates Public Use Microdata. Silicon Valley includes Santa Clara and San Mateo Counties. The share of high-occupancy housing units are calculated by determining the total number of housing units with fewer than 1 bedroom per person, with the exception of married/unmarried couple households in which the couple (presumably) shares a room. The share of low-occupancy housing units are those that have more than one bedroom per person plus an extra “spare” room, excluding couples who share a room (and may also have a spare room). Available vacant units include those that are For Rent, For Sale, and Other Vacant; they do not include Rented, not occupied¬†; Sold, not occupied; For seasonal/recreational/occasional use; or For migrant workers. A housing unit is defined as vacant if no one is living in it at the time of the Census survey interview, unless its occupants are only temporarily absent. In addition, a vacant unit may be one which is entirely occupied by persons who have a usual residence elsewhere. New units not yet occupied are classified as vacant housing units if construction has reached a point where all exterior windows and doors are installed and final usable floors are in place. Vacant units are excluded if they are exposed to the elements, or if there is positive evidence that the unit is to be demolished or is condemned. Also excluded are quarters being used entirely for nonresidential purposes, such as a store or an office, or quarters used for the storage of business supplies or inventory, machinery, or agricultural products. Other Vacant housing units include those held for legal reasons such as the settlement of an estate, held for personal reasons, or held for repairs. Potentially Available housing units include For rent, For sale only, and Other Vacant.

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