San Diego Zoning, Planning & Building Codes

Last reviewed: July 3, 2026

Overview

San Diego’s land use and zoning framework is organized as a consolidated Land Development Code (Chapters 11–15 of the Municipal Code) that sets base zones (residential, commercial, industrial, mixed‑use), supplemental overlay zones, development standards, and the permit/decision processes for discretionary and ministerial actions. Chapter 13 (Zones) contains the base zone families and numerical development tables; Chapter 14 contains citywide development standards and parking rules; Chapter 12 governs the permit types and review processes; and Chapter 11 sets the Land Development Code title and authorities. See §111.0101 for how the Land Development Code is titled and organized.

This page orients you to where the rules live in the local code, the major district families used in San Diego, the high‑level development controls you’ll run into (setbacks/height/FAR/parking), key overlays and specific plans, the typical building‑permit path, and how California housing laws (ADU/JADU, density bonus, SB 9 style urban lot splits) interact with local rules.

How San Diego’s code is organized

• The Land Development Code is Chapters 11–15 of the Municipal Code; Chapter 11 establishes the title and scope (§111.0101) and amendment procedures (§111.0107) for the LDC.
• Zoning maps, base zones, and overlay rules are in Chapter 13: Zones. The base zone development tables and use regulations are in Division/Sections under Chapter 13 (examples: §131.0401 purpose of residential zones; §131.0120 on overlay applicability).
• Permit types and decision processes (construction permit / Process One, Site Development Permits, Neighborhood Development Permits, Planned Development Permits, Conditional Use, Variances, Coastal permits) are in Chapter 12: Land Development Reviews and Chapter 11: Land Development Procedures (see §126.0101–§126.0106 for when development review applies and the findings).
• Citywide technical standards (parking, fences, signs, building spacing, environmental rules) live in Chapter 14 and are made applicable across base zones by §131.0145.

(Quick in‑text links to San Diego topic pages: the first occurrences below link to the site index)

• First mention of "zoning" — see San Diego’s zoning menu: San Diego Zoning.
• First mention of "land use" — see the land use menu: San Diego Land Use.

Zoning district families (what the zones are called)

San Diego uses descriptive base zone families rather than simple single-letter codes. Common families and examples (code names appear in Chapter 13):

• Residential families: RS (Residential–Single Unit), RT (Residential–Two Unit/Small‑lot), RX (Residential–Small Lot), RM (Residential–Multiple Unit) and subtypes (e.g., RM‑1‑2, RM‑4‑11) — see §131.0401, §131.0403, and the density tables in Chapter 13.
• Mixed‑use / commercial families: CC/CC‑x‑y (Community/Commercial center subtypes), and mixed‑use core designations used in Urban Villages (see §132.1108 for mixed‑use core development rules).
• Open space and rural: OR (Open Space/Rural) and related zones with clustering rules (§131.0250).
• Planned Districts are in Chapter 15 and may apply base zones as their regulatory base (see §131.0121).

Overlay and special district families (applied on top of base zones) include:

• Coastal Overlay Zone (COZ), Coastal Height Limit Overlay Zone (CHLOZ), Sensitive Coastal Overlay Zone (SCOZ); Parking Impact Overlay Zone (PIOZ); Transit Area/Transit Area Overlay (TAOZ); Urban Village Overlay Zone (UVOZ); Airport Land Use Compatibility Overlay (ALUCOZ); Mobilehome Park Overlay (MHPOZ); Community Plan Implementation Overlay (CPIOZ), etc. These are listed in Table 132‑01A and explained in §132.0101–§132.0104.

(Inline link: first mention of "overlay districts" points to San Diego Overlay Districts.)

Citywide development standards — what to expect (high level)

San Diego separates "where" uses are allowed (Chapter 13 base zone use tables) from "how" development must be built (Chapter 14 standards). Key places to look:

• Lot area / density and use rules: base zone tables and use tables in Chapter 13 — see residential density examples and minimum lot sizes in §131.0401–§131.0415 and Table references.
• Setbacks, lot coverage, and dimensional controls are given in the base zone development regulation tables and cross‑referenced sections (example: RT zones’ development table points to §131.0443 for front setback rules; accessory building rules are in §131.0448). For specific setback tables and numeric values look at the development regulation tables in Chapter 13 (Table 131‑04 series) and the cited sections.
• Height and Floor Area Ratio (FAR): maximum FAR and bonuses are set in Chapter 13 development tables and in sections such as §131.0546 (FAR maximums and bonuses, including mixed‑use bonuses). Urban Village rules provide an FAR/height bonus near transit (§132.1108).
• Parking rules: parking standards and reductions/shared parking are in Chapter 14, Article 2, Division 5 (referenced across Chapter 13; applicability note at §131.0145). The Parking Impact Overlay Zone amplifies requirements in high‑demand areas (§132.0802). (Inline link: first mention of "parking" goes to San Diego Parking).
• Design & transparency: mixed‑use and urban village sections include pedestrian orientation, ground‑floor transparency and articulation requirements (see §132.1108). Design review is applied via development permits and district‑specific design rules. (Inline link: first mention of "design review" goes to San Diego Design Review).

(Inline link: first mention of "development standards" goes to San Diego Development Standards.)

Specific plans, overlays, and special districts

• Specific plans must follow Government Code §65451 contents and are implemented consistent with the City’s process: the required contents and how zoning is applied through either existing base zones or new base zones are specified in §122.0107 (Required Contents of Specific Plans) — specific plans may include supplemental development regulations that supersede base zone rules where they conflict.
• The Municipal Code explicitly lists and defines multiple overlay types (Table 132‑01A) — overlays modify base zone rules and add location‑specific standards or processing rules (§132.0101–§132.0104).
• Examples of place‑based districts: Urban Villages (Urban Village Overlay and accompanying mixed‑use core rules in §132.1108–§132.1109) and the Centre City Planned District (see the Centre City divisions in Chapter 10/103).

(Inline link: first mention of "historic" or preservation topics — use San Diego Historic Preservation where designations trigger special permit paths.)

Building permits & review — the practical path

• Ministerial construction permits for development that complies with the base zone and applicable plans are generally issued following a Construction Permit (Process One) where no discretionary findings are required (see §131.0123 regarding development consistent with the land use plan but not the base zone and the use of Process One for construction permits).
• When a project needs discretionary review (design or environmental/site‑specific conditions), the Land Development Code defines multiple development permits and decision processes: Neighborhood Use Permits, Conditional Use Permits, Neighborhood Development Permits, Site Development Permits, Planned Development Permits, Coastal Development Permits, Variances — see §126.0101–§126.0106 for when development review applies and the required findings in §126.0105.
• Zoning and rezoning actions follow the Process Five (City Council hearing after Planning Commission) rules outlined in §123.0105–§123.0108.
• The City’s Land Development Manual (procedural and submittal guidance) is referenced by the code and maintained by the City Manager; see §111.0106 and related editorial notes for the Manual.

(Inline link: first mention of "California Building Standards Code" links to California Building Standards Code. The Building Regulations that the city applies are organized inside Chapter 14 (Article 5 onward) and cross‑reference Title 24 / State code for technical building standards. )

State housing law in San Diego — how state rules interact with the local code

San Diego’s Land Development Code cross‑references, accommodates, and is required to comply with California housing laws for ADUs, ministerial lot splits (SB 9), and density bonuses. Local implementation details appear in both local chapters and via state law constraints:

• ADUs / JADUs: The City controls accessory building and accessory‑use rules (habitable accessory building rules in §131.0448) while state ADU law sets permissive minimums and timelines. The state ADU summary in the uploaded California ADU handbook notes that jurisdictions cannot impose standards that prevent at least an 800 sq ft ADU with 4‑ft side/rear setbacks and imposes 60‑day completeness timelines for ministerial ADU permits (Gov. Code cross‑references summarized in the handbook). Use the local accessory building provisions together with state ADU law when planning an ADU.

(Inline link: first mention of "ADUs" links to San Diego ADUs.)

• Density bonus / affordable housing: San Diego has an Affordable Housing Density Bonus framework in Chapter 14 (Article 3, Division 7) and supplemental findings for off‑site affordable units are required by §126.0605/§126.0606 (findings for planned development/density bonus usage). Local calculations for density and when the density bonus applies are set out in Chapter 11/13 cross‑references (see §11.3 density calculation examples and Chapter 14 references).

• SB 9 / urban lot splits: The code references local Multi‑Dwelling Unit and Urban Lot Split Regulations in Chapter 14, Article 3, Division 13 via the residential use sections (see §131.0420), and the Subdivision/Map procedures in Chapter 11/12 apply to tentative maps and parcel maps (§125.0420 and §125.0430). The exact local ministerial procedures implementing SB 9 (lot split ministerial approval language) were not found verbatim in the retrieved excerpts — verify the City’s urban lot split (Section 143.1315 and Chapter 14 Division 13) text for SB 9‑specific ministerial rules.

(Inline link: first mention of "California housing laws" links to California housing laws. For ADU‑specific state law guidance see California ADU law.)

Practical takeaways / best next steps

• If your project fits the base zone and applicable specific plan/overlay standards exactly, expect a ministerial construction permit path (Process One) — see §131.0123.
• If you need to change uses, density, or deviate from standards (setback, height, parking), plan for a discretionary permit (Neighborhood Use/Development, Site Development, Planned Development, or a variance) and the corresponding findings in §126.0105.
• Look up the base‑zone development tables and the overlay map designation for your parcel (Official Zoning Map and Table 132‑01A §132.0102) before design work; overlays often change height, parking, or coastal rules.

Information Gaps / Verify with the City

• The uploaded excerpts do not show the full text of the City’s implementation language for SB 9 (ministerial lot split/ministerial duplex approvals). The code references Urban Lot Split regulations (Chapter 14, Article 3, Division 13) but the specific SB 9 ministerial process language was not found in retrieved material — verify Section 143.1315 and related local ordinances.
• For the most current numeric tables (full setback tables, FAR tables, parking ratios) consult the official Chapter 13 and Chapter 14 tables and the City’s Official Zoning Map; the snippets above point to those sections but do not reproduce every numeric table here (see Table 131‑04 series and §131.0546 for FAR rules).

Source References

• Land Development Code title and Land Development Manual references — §111.0101, §111.0106.
• Specific plans required contents and how they implement zoning — §122.0107.
• Zoning/rezoning procedures and decision process — §123.0101–§123.0109.
• Development review/permit rules and findings — §126.0101–§126.0106, §126.0605–§126.0606.
• Zones and base zone applicability / overlay applicability — §131.0120–§131.0145; Residential zone purposes and density tables §131.0401–§131.0448; FAR rules §131.0546.
• Overlay types and Parking Impact Overlay Zone — §132.0101–§132.0104, §132.0802.
• Urban Village / mixed‑use core rules — §132.1108–§132.1109.
• Accessory building / accessory uses rules in residential zones — §131.0448.
• Subdivision and map procedures relevant to lot splits — §125.0420–§125.0430.
• California ADU law summary and timing/limits (state guidance reference provided in uploaded handbook).