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Santa Maria — Zoning

Zoning under the Santa Maria local zoning and planning code, with the controlling citations.

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Quick answer

Santa Maria zoning is map-driven—unde­signated land defaults to OS (§ 12-3.02, § 12-3.03). Key caps: R-1 and R-2 limit height to 30 ft (§ 12-6.08, § 12-7.09), while R-3 allows 35 ft with front/side/rear setbacks of 20/10/10 ft (rear becomes 20 ft abutting R-1) (§ 12-8.09–§ 12-8.10). Detached ADUs need 4 ft side/rear setbacks and are typically 18–20 ft tall, with attached ADUs up to 25 ft or less if the base zone is stricter (§ 12-56.04–§ 12-56.05).

Last reviewed: July 25, 2026 · AI-generated analysis · General information, not legal advice · details

Compiled from Santa Maria's adopted code with AI research tools and grounded in the sources cited below. Verify with Santa Maria planning staff before relying on it.

Overview

Santa Maria’s zoning is codified in Title 12 — Zoning, which divides the city into mapped base districts and overlays that regulate uses and site development. The official rules are controlled by the adopted Zoning Map and its amendments, not by parcel listings or marketing materials. Any parcel’s rights start with its mapped district and any combined overlay, then the applicable development standards and special chapters apply. See the citywide context on the Santa Maria zoning & planning overview.

The adopted “Zoning Map for the City of Santa Maria, California,” as amended, is the controlling source for what you can build where; land not shown in another district defaults to OS (Open Space) (§ 12-3.02, § 12-3.03).

How Santa Maria organizes zoning

  • Districts are adopted by ordinance and shown on the official map; these districts carry uniform regulations citywide (§ 12-2.149, § 12-3.02).
  • “District” and “zone” are used interchangeably (§ 12-2.51, § 12-2.149).
  • The city enumerates residential, commercial, manufacturing, public, airport, and overlay districts (full list in § 12-3.01).
  • Development standards are set by each district chapter; some chapters specify numeric limits (e.g., heights, setbacks), others reference a range of sections to consult (§ 12-4.06, § 12-5.06, § 12-7.06, § 12-13.07, § 12-15.06, § 12-16.07).
  • ADUs/JADUs are allowed and regulated by a dedicated chapter that applies across base residential zoning and certain mixed-use areas (§ 12-2.61, § 12-56.01, § 12-56.04, § 12-56.05). For broader use rules across districts, see Santa Maria Land Use.

Zoning Map and default classification

  • Map adopted: The zoning map titled “Zoning Map for the City of Santa Maria, California,” dated March 6, 1978, as amended, is incorporated by reference (§ 12-3.02).
  • Default district: Any incorporated land not mapped in another district is automatically OS (Open Space) (§ 12-3.03).

Decision-relevant standards at a glance

These are the numerics most commonly used at intake. Always confirm parcel zoning and any overlay on the official map (§ 12-3.02).

Topic Standard Applies to Code Reference
Maximum height 30 ft R-1 (Single-Family Residential) § 12-6.08
Maximum height 30 ft R-2 (Medium-Density Residential) § 12-7.09
Maximum height 35 ft R-3 (High-Density Residential) § 12-8.09
Front setback 20 ft R-3 (with nuances for garages/blocks) § 12-8.10(a)
Side setback (interior) 10 ft R-3 § 12-8.10(b)(1)
Side setback (street side) 15 ft R-3 corner lots § 12-8.10(b)(2)
Rear setback 10 ft, or 20 ft if abutting R-1 R-3 § 12-8.10(c)(1)
ADU setbacks 4 ft side/rear (limited detached) Residential lots with ADUs § 12-56.04(1)(b)(i)
ADU height 18–20 ft detached (context-based); ≤25 ft attached (or less by underlying zone) Residential and mixed-use lots with dwellings § 12-56.05(1)(b)
PD–f freeway tower sign 75 ft max height; 400 sf/face signage PD–f overlay areas only § 12-25.03(b)(5)(E)–(F)

For dimensional items beyond these highlights, cross-check applicable district chapters and Santa Maria Development Standards. Parking requirements are separate; see Santa Maria Parking.

Base Districts — district-by-district

Each subsection notes purpose/uses and key standards only where the ordinance sections provided establish them. Where details are missing, confirm with the city’s code and the official zoning map (§ 12-3.02).

OS — Open Space

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Development standards are set “in the following sections” of the OS chapter (§ 12-4.06). Specific numbers not provided here.
  • Where it applies: As mapped; also the default district for any undesignated land within city limits (§ 12-3.03). Verify with the jurisdiction.

RA — Residential Agricultural

  • Purpose/typical uses: Not found in source materials.
  • Key standards: RA chapter contains development standards (§ 12-5.06); specifics not included here. Note: the Entrada Specific Plan may apply in certain locations (§ 12-5.12).
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

RSL-1 — Residential Small Lot

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

R-1 — Single-Family Residential

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Maximum building height 30 ft (§ 12-6.08). Other standards are within the R-1 chapter (§ 12-6.01) but not provided here. ADUs/JADUs are permitted subject to citywide ADU rules; JADUs are limited to R-1 and RSL-1 zoning (§ 12-56.05(1)(a)).
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

R-2 — Medium-Density Residential

  • Purpose/typical uses: The R-2 chapter controls medium-density residential; permitted uses not included here (§ 12-7.01).
  • Key standards: Development standards are in §§ 12-7.07 through 12-7.16; maximum height 30 ft (§ 12-7.09). Specific setbacks and lot metrics not provided here.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

R-3 — High-Density Residential

  • Purpose/typical uses: Not found in source materials.
  • Key standards:
    • Height: 35 ft maximum (§ 12-8.09).
    • Setbacks: Front 20 ft with garage nuances; side (interior) 10 ft; street side on corner 15 ft; rear 10 ft, or 20 ft when adjoining R-1 (§ 12-8.10(a)–(c)).
    • Taller buildings guideline: For buildings exceeding 35 ft, consider increasing setbacks by 5 ft per additional 10 ft of height as a guideline (§ 12-8.10(d)).
    • Mixed-use: Setbacks may be reduced for mixed-use per § 12-49.09(c), as referenced (§ 12-8.10(e)).
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

RMH — Residential Mobile Home Park

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

CPO — Commercial Office and Professional Office

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

CC — Convenience Center

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

C-1 — Central Business District

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

C-2 — General Business District

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Development, uses, and structures in C-2 are subject to standards in §§ 12-13.08 through 12-13.15 (§ 12-13.07). Specific numeric standards not provided here.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

CZ — Clear Zone

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Likely near airport environs; Verify with the jurisdiction.

FS — Freeway Service District

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

M-1 — Light Manufacturing

  • Purpose/typical uses: Not found in source materials.
  • Key standards:
    • Development standards apply per §§ 12-15.07 through 12-15.13 (§ 12-15.06).
    • Must comply with county air pollution district rules (§ 12-33.302) and city-adopted noise standards (§ 12-33.306).
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

CM — Commercial and Manufacturing

  • Purpose/typical uses: Not found in source materials.
  • Key standards: CM chapter governs with development standards applying to all land/structures (§ 12-16.01, § 12-16.07). Specific numbers not provided here.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

M-2 — General Manufacturing

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials; industrial air/noise provisions will apply citywide (§ 12-33.302, § 12-33.306).
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

PF — Public Facilities and Institutional

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

SP — Specific Plan Zoning District

  • Purpose/typical uses: Not found in source materials. The code notes certain areas may be governed by specific plans (e.g., Entrada) (§ 12-5.12).
  • Key standards: Not found in source materials.
  • Where it applies: As mapped or as adopted by specific plans; Verify with the jurisdiction.

AS-I — Airport Service I Zone

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

AS-II — Airport Service II Zone

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

AS-III — Airport Service III Zone

  • Purpose/typical uses: Not found in source materials.
  • Key standards: Not found in source materials.
  • Where it applies: As mapped (§ 12-3.02). Verify with the jurisdiction.

Overlay and Combining Districts — district-by-district

AA — Airport Approach Zone (Combining Regulations)

  • Purpose/typical controls: Not found in source materials.
  • Interaction: Applies in combination with a base zone (§ 12-3.01).
  • Verify map and any flight-path-driven limits with the jurisdiction (§ 12-3.02).

PD — Planned Development Overlay

  • Purpose: Allows tailored development consistent with the underlying district but managed through a Planned Development permit process (§ 12-25.03).
  • Permitted uses and flexibility:
    • By right in PD if also permitted in the underlying zone and approved by the Zoning Administrator, including single-family residences, minor additions, accessory structures, and emergency shelters (per cross-reference to Ch. 12-53) (§ 12-25.03(a)).
    • Residential PDs: PD/RA, PD/RSL-1, PD/R-1, PD/R-2, PD/R-3 may permit residential uses guided by the base-zone regulations; densities set by the General Plan Land Use Element (§ 12-25.03(b)(1)).
    • Commercial PDs: PD/CPO, PD/C-1, PD/C-2, PD/FS, PD/AS may permit commercial/office uses guided by base-zone rules, with Planning Commission authority to modify/delete side and rear setbacks next to any “R” district if specific findings are made (§ 12-25.03(b)(2)(A)–(D)).
    • Industrial PDs: PD/CM, PD/M-1, PD/M-2 may permit limited industrial uses guided by base-zone rules, with the same setback modification pathway and findings next to “R” districts (§ 12-25.03(b)(3)).
    • Efficiency-unit projects may be allowed in PD/C-1 and PD/C-2 subject to Ch. 12-52 and the PD permit (§ 12-25.03(b)(4)).
  • Where it applies: Only where mapped as PD in combination with a base zone (§ 12-3.01, § 12-3.02). For process and design conditions, anticipate Santa Maria Design Review and Santa Maria Variances and Exceptions issues where applicable.

PD–f — Planned Development and Freeway Tower Overlay

  • Purpose: To allow a single, high-quality “freeway tower” sign within a distinct overlay area inside PD on non-residential property (§ 12-25.03(b)(5)(A)–(D)).
  • Key standards: Max tower height 75 ft; signage up to 400 sf per face with design and landscaping expectations; channel letters required; City Council approval via PD permit; separate sign permit under Ch. 12-34 is required (§ 12-25.03(b)(5)(E)–(I), § 12-34.03).
  • Where it applies: Only in a mapped PD–f overlay, unique to each site (§ 12-25.03(b)(5)(B)–(D)). For broader sign rules, see Santa Maria Signage.

H — Historic Overlay District

  • Purpose/typical controls: Not found in source materials.
  • Interaction: Applies in combination with a base zone (§ 12-3.01).
  • Where it applies: As mapped (§ 12-3.02). See Santa Maria Historic Preservation.

Cross-cutting, citywide provisions that affect zoning

  • Industrial performance standards: All activities releasing air contaminants must comply with the county air district; industrial uses must meet city noise standards (§ 12-33.302, § 12-33.306).
  • ADUs and JADUs (citywide zoning layer):
    • Where allowed: ADUs may be permitted on residential or mixed-use lots with an existing or proposed dwelling; JADUs only on R-1 and RSL-1 lots with a single-family dwelling (§ 12-56.05(1)(a)).
    • Key ADU metrics: Detached ADUs on single-family lots up to 18 ft (or 20 ft with matching roof pitch), with 4 ft side/rear setbacks; attached ADUs up to 25 ft or the underlying zone’s height limit if lower, and no more than two stories (§ 12-56.04(1)(b); § 12-56.05(1)(b)).
    • Multi-family: Converted ADUs in non-livable areas; detached ADUs up to eight, capped by unit count, with 4 ft side/rear setbacks and context-based height caps (§ 12-56.04(1)(c)–(d); § 12-56.05(1)(b)(ii)).
    • See Santa Maria ADUs for the full city program; also note state context in California housing laws and California ADU law.
  • Map control and nonconformities: Zoning follows the official map. If an existing use/structure doesn’t meet current rules, see Santa Maria Nonconforming Uses.
  • Separate from zoning: Technical building, fire, and energy codes apply and are outside zoning; see the California Building Standards Code.

Checklist

  • Confirm the parcel’s base district and any overlays on the official Zoning Map (§ 12-3.02).
  • If the parcel is undesignated, treat it as OS pending confirmation (§ 12-3.03).
  • Identify applicable district development standards (heights, setbacks, site limits) in the chapter cited for your district (e.g., R-3 setbacks in § 12-8.10; R-1 height in § 12-6.08).
  • If proposing an ADU/JADU, check citywide eligibility, height, and setback rules (§ 12-56.04, § 12-56.05).
  • For PD overlays, confirm permitted uses and any setback modifications and findings required (§ 12-25.03).
  • For signage near freeways, verify whether a PD–f overlay exists and the tower sign constraints (§ 12-25.03(b)(5); § 12-34.03).
  • For industrial uses, document compliance with air pollution and noise standards (§ 12-33.302, § 12-33.306).
  • Check whether a specific plan (e.g., Entrada) or airport-related zone affects the site (§ 12-5.12; § 12-3.01).
  • Validate parking, landscaping, and design review triggers separately from zoning entitlements (see Santa Maria Parking, Santa Maria Landscaping and Screening, and Santa Maria Design Review).

Risks & Ambiguities

Issue Why it matters What to verify
Missing permitted use lists for many districts Use allowances determine if a project is even eligible Not found in source materials; obtain the full district use tables from the city
PD overlay flexibility PD can modify side/rear setbacks next to “R” districts Confirm PD permit conditions and adopted findings pathway (§ 12-25.03(b)(2)–(3))
R-3 mixed-use setback reductions Reference allows reductions Whether § 12-49.09(c) applies and by how much (§ 12-8.10(e))
Airport-related zones (AA, AS I–III, CZ) Height and safety surfaces may restrict development Applicable airport overlays and any FAA-related surfaces; Not found in source materials
Specific Plan areas May supersede base standards Whether a Specific Plan (e.g., Entrada) governs the site (§ 12-5.12)
Industrial performance limits Air/noise constraints can shape site design Applicable thresholds under county air rules and city noise standards (§ 12-33.302, § 12-33.306)
ADU height allowances Limits differ by context and proximity to transit/stories Which ADU height tier applies (§ 12-56.05(1)(b)); confirm JADU limits for R-1/RSL-1 (§ 12-56.05(1)(a))

Plain-English Summary

Santa Maria assigns each parcel to a mapped zoning district that sets what you can build and basic limits like height and setbacks. Single-family lots in R-1 cap at 30 ft building height, medium-density R-2 also caps at 30 ft, and high-density R-3 allows 35 ft with defined front/side/rear setbacks (§ 12-6.08, § 12-7.09, § 12-8.09–§ 12-8.10). Citywide ADU rules add options on residential lots, and PD overlays can tailor standards. Always start by checking the official zoning map and any overlays (§ 12-3.02).

Source References

  • Zoning map adoption and default district: § 12-3.02; § 12-3.03
  • Definitions and applicability: § 12-2.01; § 12-2.51; § 12-2.149
  • Districts enumerated: § 12-3.01
  • OS development standards applicability: § 12-4.06
  • RA regulations and development standards; Entrada note: § 12-5.01; § 12-5.06; § 12-5.12
  • R-1 regulations and height: § 12-6.01; § 12-6.08
  • R-2 regulations; development standards; height: § 12-7.01; § 12-7.06; § 12-7.09
  • R-3 height and setbacks; mixed-use reference: § 12-8.09; § 12-8.10
  • C-2 development standards applicability: § 12-13.07; §§ 12-13.08–12-13.15
  • M-1 development standards applicability: § 12-15.06; §§ 12-15.07–12-15.13
  • CM regulations and development standards applicability: § 12-16.01; § 12-16.07
  • PD and PD–f overlays: § 12-25.03; § 12-34.03
  • Industrial performance standards: § 12-33.302; § 12-33.306
  • ADU definitions and program: § 12-2.61; § 12-56.01; § 12-56.04; § 12-56.05

Sources

Source passages

  • Santa Maria Zoning Code (§ 12-3.02) Medium relevance
  • Santa Maria Zoning Code (§ 12-2.51) Medium relevance
  • Santa Maria Zoning Code (§ 12-2.01) Medium relevance
  • Santa Maria Zoning Code (§ 12-16.07) Medium relevance
  • Santa Maria Zoning Code (§ 12-6.08) Medium relevance
  • Santa Maria Zoning Code (§ 12-7.01) Medium relevance
  • Santa Maria Zoning Code (§ 12-25.03) Medium relevance
  • Santa Maria Zoning Code (§ 12-33.302) Medium relevance
  • Santa Maria Zoning Code (§ 12-5.01) Medium relevance
  • Santa Maria Zoning Code (§ 12-2.61) Medium relevance
  • Santa Maria Zoning Code (§ 12-2.149) Medium relevance
  • Santa Maria Zoning Code (§ 12-13.07) Medium relevance
  • Santa Maria Zoning Code (§ 12-7.09) Medium relevance
  • Santa Maria Zoning Code (§ 12-6.01) Medium relevance
  • Santa Maria Zoning Code (§ 12-33.306) Medium relevance
  • Santa Maria Zoning Code (§ 12-5.06) Medium relevance

Cited sections

Frequently asked questions

What can I build on an R-1 lot in Santa Maria?

R-1 sets the single-family framework, with a maximum building height of 30 ft (§ 12-6.08). Specific permitted uses and other dimensional standards are not included in the source materials; verify the full R-1 chapter (§ 12-6.01) with the city. ADUs and JADUs are allowed subject to the citywide ADU rules, with JADUs limited to R-1 and RSL-1 lots (§ 12-56.05(1)(a)).

What are the R-3 setbacks and height in Santa Maria?

In R-3, maximum height is 35 ft (§ 12-8.09). Setbacks are generally: front 20 ft, interior side 10 ft, street side on corners 15 ft, and rear 10 ft (or 20 ft if abutting R-1) (§ 12-8.10). There’s also a guideline to increase setbacks when buildings exceed 35 ft (add 5 ft per 10 ft of added height) (§ 12-8.10(d)).

Can I reduce setbacks for a mixed-use project in R-3?

Possibly. R-3 allows setback reductions for mixed-use projects per a cross-referenced section (§ 12-49.09(c)), as stated in § 12-8.10(e). The exact reduction parameters are not in the source materials; verify the mixed-use standard with the city.

How do Planned Development (PD) overlays affect my project?

PD overlays let the city tailor development while using the base district as a guide (§ 12-25.03). In PD/C or PD/M settings, the Planning Commission may modify or delete side and rear setbacks next to “R” districts if it makes specific findings about privacy, shadows, noise, and design quality (§ 12-25.03(b)(2)–(3)). Densities for residential PDs are tied to the General Plan Land Use Element (§ 12-25.03(b)(1)).

Are freeway tower signs allowed in Santa Maria?

Only in a mapped PD–f overlay on non-residential PD property. Each overlay may allow one tower up to 75 ft tall with signage up to 400 sf per face, subject to City Council approval via a PD permit and a separate Sign Permit (§ 12-25.03(b)(5)(A)–(I); § 12-34.03).

Where can I build an ADU and how tall can it be?

ADUs are allowed on residential or mixed-use lots with an existing or proposed dwelling (§ 12-56.05(1)(a)). Detached ADUs on single-family lots can be up to 18 ft (or 20 ft with matching roof pitch) with 4 ft side/rear setbacks; attached ADUs can be up to 25 ft or the underlying zone’s cap if lower, and no more than two stories (§ 12-56.04(1)(b); § 12-56.05(1)(b)).

What rules apply to industrial projects regarding noise and air?

Any activity that releases air contaminants must meet county air district regulations, and industrial uses must comply with city-adopted noise standards (§ 12-33.302; § 12-33.306). These performance standards can influence equipment selection, building orientation, and site buffering.

What if my parcel seems “un-zoned” on a map printout?

By ordinance, any incorporated land not designated on the map is deemed OS (Open Space) until mapped otherwise (§ 12-3.03). Always rely on the official, current Zoning Map as adopted and amended (§ 12-3.02) and verify with the city.

General information, not legal advice.

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