Item 28 - Urban Water Management Plan and Water Shortage Contingency Plan

Home Browse Search

Santa Ana 2020 Urban Water Management Plan arcadis.com 3-9 Based on the zoning designation collected and aggregated by Southern California Association of Governments (SCAG) around 2018, the current land use within the City’s service area can be categorized as follows:  Single family residential – 48%  Multi-family residential – 14.1%  Commercial – 10.8%  Industrial – 7.1%  Institutional/Governmental – 10.3%  Open space and parks – 8.4%  Other – 1.1% (e.g., Undevelopable or Protected Land, Water, and Vacant)  No land use designations – 0.2% 3.5.2 Projected Land Uses Moving forward, the City will continue planning for its RHNA allocation and new developments may potentially include Accessory Dwelling Units (ADUs). RHNA - State law requires jurisdictions to provide their share of the RHNA allocation. SCAG determines the housing growth needs by income for local jurisdictions through RHNA. The City’s RHNA allocation for the 2021 - 2029 is 3,095 units. This includes 586 units for very low-income households, 362 units for low-income households, 523 units for moderate-income households, and 1,624 units for above moderate-income households. Accessory Dwelling Units – ADUs are separate small dwellings embedded within residential properties. There has been an increase in the construction of ADUs in California in response to the rise in interest to provide affordable housing supply. The Legislature updated the ADU law effective January 1, 2020 to clarify and improve various provisions to promote the development of ADUs. (AB-881, "Accessory dwelling units," and AB-68, "Land use: accessory dwelling units”) These include:  allowing ADUs and Junior Accessory Dwelling Units (JADUs) to be built concurrently with a single-family dwelling. JADUs max size is 500 square feet (sf).  opening areas where ADUs can be created to include all zoning districts that allow single-family and multi-family uses  maximum size cannot be less than 850 sf for a one-bedroom ADU or 1,000 sf for more than one bedroom (California Department of Housing and Community Development, 2020) About 92% of the ADUs in California are being built in the single family zoned parcels (University of California Berkeley, 2020). The increase in ADUs implies an increase in number of people per dwelling unit which potentially translates to higher water demand. In coordination with the General Plan Advisory Group, the City identified the following five focus areas suitable for new growth and development in the October 2020 Public Hearing Draft General Plan:  South Main Street  Grand Avenue/17th Street  West Santa Ana Boulevard  55 Freeway/Dyer Road