The Regional Housing Needs Allocation (RHNA) is the fair share of the regional housing need for all economic segments of the community and is closely related to the Housing Element.
The most important aspect of housing element law is that each city must include an inventory of sites that can accommodate its RHNA allocation. If the inventory can’t accommodate the need, then the housing element must include a program to rezone sites to accommodate the need. However, identifying a sufficient number of sites that are properly zoned does not necessarily mean affordable housing is built there. Often nothing is built, or more often market-rate housing is built on these sites.