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housing unit per 3.12 Orange County residents and one housing unit per 1.50 jobs by
2020. A growing population requires approximately one housing unit per 3.28 residents
or 1.5 jobs according to the Regional Planning Department at UC Berkeley. The
projected housing production by 2020 will continue to satisfy the growing population.
Given the forecast growth in population, this projected growth in housing is sufficient to
house all the population of Orange County by 2020.
Housing growth will occur throughout the County and there will be fewer large areas
without housing. The largest concentration of housing growth between 2008 and 2020
will occur in Brea; the middle section of the County straddling the I-5 Freeway in Irvine;
Tustin’s Legacy development; and Rancho Mission Viejo in unincorporated South
County. Additionally, TAZs with 3,000 or greater housing units are expected to grow in
numbers, signaling increased densification (see Figure 19).
Overall, the County is projected to experience an even spread of housing unit growth
between 2008 and 2020. During this time, the majority of TAZs will experience an
increase of between 1-99 housing units. Figure 20 does show many TAZs that will
experience no growth or loss of units that can be explained by the fact that much of
Orange County developable land has already been built on and, therefore, is limited in the
number of units that can be added. This is especially true where the housing stock is
newer and/or within planned communities. It is likely that future developments will be
more dense (likely multi-unit structures) to offset the limited land supply.
Orange County housing unit density in 2020, measured in units per TAZ acre, shows
pockets of increasing densification centered around all the transit options but mainly
around the Metrolink rail line (see Figures 21 and 22).
By 2035, housing totals in Orange County are projected to grow to 1,174,912. This
constitutes an increase of 74,652 units between 2020 and 2035. In 2035, the only TAZs
with no housing units are areas of permanently dedicated open space and parkland. The
densest TAZs, holding 3,000 housing units or more, become much more prevalent in
2035 and are most notably found in Brea, Fullerton, Anaheim, Tustin, Irvine, Lake
Forest, Newport Beach, San Juan Capistrano, Yorba Linda, and unincorporated south
county communities of Ladera Ranch and Rancho Mission Viejo (Figure 23).
As shown in Figures 24 and 25, from 2020 to 2035, the majority of high-growth TAZs
which grow by 1,000 units or more and by 100% or more, effectively double the housing
units in those areas. These include TAZs in Anaheim, La Habra, Orange, Fullerton,
Irvine, Tustin, and the future Rancho Mission Viejo community in unincorporated South
County.
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