Published zoning research
Municipal zoning overview
San Diego’s zoning framework is governed by the City of San Diego Municipal Code, especially Chapters 10 through 15, with zoning districts, general regulations, development procedures, and planned districts organized across those chapters. The source set also includes San Diego County materials, but those County rules apply only to unincorporated areas and not to property inside the City of San Diego. Based on the provided city sources, the city has a broad zoning system with multiple zone families, overlay regulations such as the Coastal Overlay Zone and historic review triggers, and a permit structure that includes preliminary review and Planning Commission hearings for some discretionary land use matters.
Last researched May 2026
Zoning Districts in San Diego, CA
City of San Diego zone families under Chapter 13
The City organizes zoning by chapter and zone groups rather than a single short district list in the provided materials. The municipal code page confirms Chapter 13 contains the city’s zones, and the ADU bulletin says ADUs are generally allowed in zones that permit residential uses.
Allowed uses: Residential uses in zones that permit residential uses, Accessory dwelling units as allowable limited uses in zones identified by the use regulation tables
Recent Zoning Changes
The clearest recent city zoning changes in the provided sources relate to ADU and JADU regulations. The January 2026 city bulletin states that Coastal Commission certification on Sept. 12, 2024 made Housing Action Package 1.0 ADU setback and landscape rules effective in the Coastal Overlay Zone, while later ordinances including Housing Action Package 2.0, the 2024 Land Development Code Update, and 2025 ADU/JADU amendments are not yet effective in the Coastal Overlay Zone until Coastal Commission certification occurs.
ADU, Rental & Special Use Rules in San Diego, CA
ADU
ADUs are attached or detached residential dwelling units allowed as limited uses in zones where the use regulation tables allow them, generally where residential uses are permitted.
- Must be 1,200 square feet in size or less
- Must provide complete independent living facilities
- Must be located on a lot with a proposed or existing single-dwelling unit or multiple-dwelling units
- Multiple ADUs, including Bonus ADUs, must comply with base zone rules on structure height, lot coverage, and maximum floor area ratio
- Some ADU rules differ in the Coastal Overlay Zone depending on Coastal Commission certification status
JADU
The bulletin confirms city JADU rules exist and notes that some newer amendments are not yet effective in the Coastal Overlay Zone.
- A newer ordinance states a JADU home may only be constructed within an existing or proposed single dwelling unit, or an attached garage
- The January 2026 bulletin says that specific newer rule is not yet effective within the Coastal Overlay Zone pending certification
Overlay Districts in San Diego, CA
Coastal Overlay Zone
A city overlay area where some land development regulations, including newer ADU and JADU amendments, do not become effective until certified by the California Coastal Commission.
Historic resource or historic district review area
The city preliminary review page indicates historic review may be required for sites with designated historic resources, sites within designated historic districts, and sites containing structures of 45 years or more.
San Diego, CA Zoning FAQ
Are ADUs allowed in San Diego, CA?
ADUs are attached or detached residential dwelling units allowed as limited uses in zones where the use regulation tables allow them, generally where residential uses are permitted.
What zoning districts are in San Diego, CA?
San Diego, CA includes districts such as City of San Diego zone families under Chapter 13.
Are there flood zones or overlay districts in San Diego, CA?
The provided city-specific source set identifies coastal certification issues and historic-resource review as practical development constraints. Floodplain risk is clearly a regional concern, but the floodplain source supplied in the research is a County unincorporated-area plan rather than city zoning text, so it shou…
Have there been recent zoning changes in San Diego, CA?
The clearest recent city zoning changes in the provided sources relate to ADU and JADU regulations. The January 2026 city bulletin states that Coastal Commission certification on Sept.
Common questions about San Diego, CA zoning
Zoning Guides
- How to Check Zoning Before You Buy→
- Zoning Due Diligence Checklist→
- ADU Zoning Laws Explained→
- Variance vs. Special Use Permit→
- Zoning Red Flags Investors Miss→
- What Is a Nonconforming Use?→
New to zoning research? Learn what a zoning report covers, how to check the zoning of any property, or run zoning due diligence before your next deal.
More California Zoning Reports
- Anaheim, CA Zoning→
- Bakersfield, CA Zoning→
- Fontana, CA Zoning→
- Fremont, CA Zoning→
- Fresno, CA Zoning→
- Huntington Beach, CA Zoning→
- Irvine, CA Zoning→
- Long Beach, CA Zoning→
- Los Angeles, CA Zoning→
- Modesto, CA Zoning→
- Moreno Valley, CA Zoning→
- Oxnard, CA Zoning→
Full investor analysis
Deal-fit, approval path & risk flags for San Diego, CA
Get the complete report with feasibility by project type, approval complexity, constraint flags, and policy direction — generated from San Diego, CA's own zoning code and board records. First town report is free.
Get the full San Diego, CA report free →Sources
- Municipal Code | City of San Diego Official Website — Confirmed the city’s zoning code structure, including Chapters 10 through 15 and that the municipal code is updated as ordinances are adopted.
- Accessory Dwelling Unit/Junior Accessory Dwelling Unit | City of San Diego Official Website — Primary source for ADU/JADU use rules, size cap, applicability, and recent effective-date differences in the Coastal Overlay Zone.
- Preliminary Review | City of San Diego Official Website — Provided the city’s pre-application review process, 20-business-day timing, SB 330 option, and historic review triggers.
- Planning Commission | City of San Diego Official Website — Provided Planning Commission meeting schedule, hearing format, and public participation procedures.
- Previously Conforming Uses – Fact Sheet - City of San Diego — Primary source for city rules on previously conforming uses, structures, discontinuance, repair, expansion, and rebuilding.
- Zoning Ordinance — County source only; used to distinguish unincorporated county zoning from city zoning and avoid mixing jurisdictions.
- Zoning Ordinance Summary — County source only; useful for jurisdictional distinction but not used for city zoning conclusions.
- Planning Commission Hearings — County hearing page; included only to note that it applies to unincorporated county projects, not city parcels.
- Appeal Procedure for Use Permits and Variances — County appeal procedure; not used for city entitlement conclusions.
- Building Division Home — County building permit page; not used for city approval process analysis except to distinguish county jurisdiction.
- Microsoft Word - FMP_8_7_07_final_.doc — County floodplain management plan; relevant only as regional background and not as direct City of San Diego zoning authority.
This summary is AI-generated from public municipal sources and is not legal, engineering, or land-use advice. Always verify zoning with San Diego, CA officials before making decisions.