Local zoning · Santa Rosa

Santa Rosa — Land Use

Q: What can I build on an R‑1 lot in Santa Rosa?

R‑1 generally allows single‑family detached homes as a permitted use (Zoning Clearance required) while duplexes/multifamily may be limited or require MUP/CUP depending on precise subzone. Check the R‑1 row in Table 2‑2 and the development standards/Division 3 for numeric setbacks and height limits — the use table and general rules are in § 20-21.030 .

Q: Where are downtown mixed‑use districts (CMU / SMU / MMU / NMU) used and what do they allow?

The Code applies CMU , SMU , MMU , and NMU in downtown areas to encourage combinations of housing, retail, services, maker spaces, and visitor-serving uses. Each district’s purpose and typical allowed mix is described in the zoning chapter; see the CMU/MMU/SMU/NMU descriptions and the downtown use tables for permit levels.

Q: Can I put a small manufacturing or maker business in a mixed‑use downtown district?

Yes — the MMU (Maker Mixed Use) district is specifically intended for artisan shops, studios, limited light industrial, and maker‑oriented uses; permitted level depends on the exact use and intensity (check the MMU table and Chapter 20‑42 if the use is listed as S).

Q: What does “P” vs “MUP” vs “CUP” mean in the use table?

“ P ” = permitted with a Zoning Clearance ( § 20-52.020 ), “ MUP ” = Minor Conditional Use Permit, and “ CUP ” = Conditional Use Permit (both in § 20‑52.050 ). Each permit has different submittal, noticing and approval standards.

Land Use under the Santa Rosa local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page summarizes how the City of Santa Rosa's Zoning Code (commonly known as Title 20) regulates what uses are allowed on land across the city, which permit level applies, and where additional local standards or combining districts modify those rules. The basic rules for allowable uses, exemptions, and the permit types (Zoning Clearance, Minor Conditional Use Permit, Conditional Use Permit, and Specific-Use standards) are set out in § 20-21.030 and related tables; exemptions are in § 20-21.040.

Notes: this page stays strictly within the Zoning Code (Title 20) land-use rules. For site design items referenced below see the city's Santa Rosa Development Standards and for vehicle requirements see Santa Rosa Parking. The first mention of “design review,” “overlay districts,” “historic preservation,” “ADUs,” “nonconforming uses,” and the California code are linked in-line to the corresponding guidance pages.

How the Zoning Code organizes land uses (short primer)

Allowable uses and the required permit level are shown in use tables in the Code (residential tables in Chapter 20-22, commercial in Chapters 20-23, industrial in 20-24). The overall rules for interpreting those tables are in § 20-21.030.
Permit types: Zoning Clearance (P), Minor Conditional Use Permit (MUP), Conditional Use Permit (CUP), or S (subject to specific-use standards found in Chapter 20-42). See § 20-52.020 and § 20-52.050.
Some activities are exempt from land-use permit requirements if they comply with code standards (see § 20-21.040).
Combining/overlay districts add rules (Chapter 20-28) and are shown on the zoning map; see Section 20-28.010.

District-by-district breakdown (selection of key zoning districts)

Note: the City’s use tables list dozens of specific uses per zone. Below are the principal districts used most often and the decision-relevant policy and use patterns found in the Code. For exact row-by-row allowances consult the use tables in Chapters 20-22, 20-23, and 20-24 (see § 20-21.030).

Residential districts (Chapter 20-22 — § 20-22.010 et seq.)

Purpose: regulate site layout, building size, and allowable residential and limited community uses. See § 20-22.010.
Districts: RR, R-1, R-2, R-3, MH, TV-R (Transit Village Residential).
Typical permitted uses (examples from Table 2-2): single‑family detached (P in R‑1, RR), duplex and multi‑family (P or MUP depending on district), accessory dwelling units (ADUs) are regulated as S (subject to the ADU rules at § 20-42.130). See Table 2-2 and § 20-42.130.
Key dimensional / development notes: the Code requires compliance with the development standards in the same chapter and Division 3 (setbacks, height limits, parking). Specific numeric setbacks, lot coverage, and floor‑area ratios are located in the development standards and in zone-specific tables; exact values for a given parcel must be read from those tables (not all numeric values are reproduced in the materials retrieved here). Verify setbacks and heights in the district table and the Development Standards chapter. Not found in retrieved materials: an exhaustive list of R‑1 numeric setbacks and lot coverage.

Commercial / Mixed‑Use districts (Chapter 20-23)

Purpose: Provide retail, office, service and mixed-residential opportunities at different scales.
Downtown-focused mixed‑use districts (descriptions and intent found in the Code):
- CMU (Core Mixed Use): high-intensity downtown core, encourages residential over ground-floor retail/entertainment, high‑rise residential allowed in mixed-use projects. See CMU description.
- SMU (Station Mixed Use): near SMART station; visitor-serving uses, hotels, restaurants; supports multifamily.
- MMU (Maker Mixed Use): maker/artisan uses, micro‑breweries/distilleries, light industrial/artisan production; live/work encouraged.
- NMU (Neighborhood Mixed Use): neighborhood-serving retail and housing (smaller scale).
Typical permit regimes: many retail and restaurant uses in downtown mixed‑use districts are P, MUP, or CUP depending on scale and whether alcohol/late hours are involved. See the commercial use table and specific use sections (Chapter 20-42) for restaurants, outdoor dining, and alcohol sales.

Key downtown development standards (examples from the North Station area tables):

Ground-floor retail ceiling height minimum 15 ft in Transit Village and Retail zones; retail depth 25 ft; transparency (windows) requirements (e.g., 80% main frontage for Retail/Business Services in some areas). Building heights in Transit Village: min 2 stories (25 ft), max 5 stories (55 ft). Encroachments: balconies, bay windows, chimneys may encroach up to 2.5 ft; awnings/canopies up to 8 ft into public right-of-way. These design standards are shown in the North Santa Rosa Station Area tables and implementing combining district provisions (see the -SA combining district).

(First mention links: development standards link to Santa Rosa Development Standards. Design-related approvals later are subject to Santa Rosa Design Review.)

Industrial / Business districts (Chapter 20-24)

Districts: BP (Business Park), IL (Light Industrial), IG (General Industrial).
Purpose and typical uses:
- BP: campus-like headquarters, R&D, light assembly, limited retail/ancillary hotel and residential uses; no outdoor storage.
- IL: light industrial and commercial service uses that may be incompatible with residential.
- IG: heavier industry, warehousing, 24-hour operations; uses that may create noise, odor, or heavy truck traffic.
Permits: Table 2-10 lists allowed uses and permit levels for industrial districts; re-occupancy can be allowed by Zoning Clearance when the Director finds the new use is similar or less intensive. See Table 2-10 and related re-occupancy rules.

Special Purpose districts (examples)

OSR / OSC / PI (Open Space / Conservation / Public Institutional): special-purpose tables list medical facilities, child care centers and institutional uses with permit levels shown in Table 2-12. Refer to Table 2-12.

Combining / Overlay districts (Chapter 20-28, examples)

The Code applies additional standards through combining districts (for example -G Gateway, -SA North Station Area, -H Historic) that modify allowed uses or development standards; where combined, the combining district is appended as a suffix to the primary district on the zoning map. See § 20-28.010 and the Gateway and North Station Area combining district text (for -G and -SA). Visit the city's Santa Rosa Overlay Districts page for mapping.

How permits and special-use rules operate (practical)

If a table marks a use as P, the use requires a Zoning Clearance (administrative). See § 20-52.020.
MUP uses require a Minor Conditional Use Permit; CUP uses require a Conditional Use Permit; both are governed by procedural rules in § 20-52.050.
Many specific activities (restaurants with outdoor dining, child care centers, mobile food vendors, cannabis retail limits) are subject to additional site-specific standards in Chapter 20-42 (see, e.g., § 20-42.050, § 20-42.110, § 20-42.160, § 20-46).
Some uses are expressly exempt from land-use permit requirements if they meet dimensional and other code standards (see § 20-21.040). Examples: certain fences, interior remodeling, small accessory structures, small mobile food operations and Microenterprise Home Kitchen Operations (MEHKO) with county permits.

(First mention links: when a land use or permit triggers site plan or design control it can also require Santa Rosa Design Review. Appeals and adjustments are handled through the City's appeals process and Santa Rosa Variances and Exceptions.)

Quick reference table — selected uses and where they show up (decision-relevant excerpt)

District / Use example	Typical permit level (example)	Key conditions or where to check	Code Reference
Single‑family detached in R‑1	P (Zoning Clearance) in many contexts	Check lot‑specific standards, setbacks and PD overlays	Table 2-2; § 20-21.030
Accessory Dwelling Unit (ADU)	S (subject to ADU rules)	ADU-specific standards apply; see ADU chapter	§ 20-42.130; see Santa Rosa ADUs
Restaurant w/ outdoor dining in mixed‑use downtown	MUP often required	Outdoor dining standards and alcohol rules may apply	Table 2-2; § 20-42.160
Maker/Light industrial (MMU / IL)	P / MUP / CUP depending on intensity	Check performance and nuisance standards; BP disallows outdoor storage	Table 2-10; BP district description § 20-24.x
Cannabis retail	Often CUP or special restrictions (600 ft school setback)	Special distance rules and public review; see cannabis section	§ 20-46; table notes (600 ft limit)
Child Day Care Center	MUP / P depending on district	See specific use rules in § 20-42.050	§ 20-42.050; Table 2-12

Checklist (what an applicant must satisfy for most new uses)

Confirm the property's primary zoning and any combining/overlay districts on the zoning map (see Chapter 20-20 and § 20-28.010).
Look up the use in the correct use table (Chapter 20‑22/23/24) to determine P / MUP / CUP / S or not allowed (see § 20-21.030).
If use is S or refers to a Chapter 20‑42 section, read and design to those specific use standards (e.g., § 20-42.050, § 20-42.160, § 20-42.130).
Meet the district development standards (setbacks, height, FAR/coverage) contained in the applicable district tables and Division 3; consult the Santa Rosa Development Standards.
Confirm parking and loading requirements per the Parking chapter and provide required spaces (see Santa Rosa Parking).
Determine if the project also needs design review, historic‑preservation review, or other discretionary approvals; factor into schedule.
If proposing a use not listed, consider asking the Director for a "similar and compatible" determination (findings in § 20-21.030.A.3).

Risks & Ambiguities

Issue	Why it matters	What to verify
Zone‑specific numeric setbacks, height, FAR, lot coverage	These numeric standards determine buildable area and project feasibility	The district tables and Division 3 hold numbers — verify the exact table row and any combining district modifications. Not found in retrieved materials: a complete list of numeric setbacks per zone; verify with the Code or the Planning Department.
Use labeled “S” (See specific use regs)	S means additional standards may trigger design changes or extra approvals	Read the Chapter 20‑42 specific use sections referenced in the use table row (e.g., § 20-42.050, § 20-42.130).
Combining districts (e.g., -SA, -G, -H)	They can override or add standards to the base zone	Confirm whether the parcel is mapped into a combining district and read that combining district’s text (Chapter 20‑28).
Director’s “similar and compatible” determinations	Can be used to allow unlisted uses but are discretionary	Verify required findings in § 20-21.030.A.3 and whether referral to Commission may happen.
Exempt activities (e.g., MEHKO, small food vendors)	Exemption avoids land-use permit but still requires compliance with other agencies	Check the exemption criteria in § 20-21.040 and any county health or business licensing requirements.

Plain-English Summary

Santa Rosa’s Zoning Code groups each parcel into a specific zone and then lists, in use tables, exactly which activities are allowed there and whether they need a simple administrative clearance, a minor or full conditional-use permit, or special standards; combining districts and Chapter 20‑42 rules add special controls that can change what’s allowed. Always read the specific table row for your parcel and the linked special-use and development-standard sections before planning construction.

Information Gaps

The retrieved materials do not contain a single compiled list of numeric setbacks, maximum lot coverage, or FAR values for each district (verify those specific numeric development standards in the applicable District table and Division 3). Not found in retrieved materials.
Exact mapping of combining/overlay district boundaries for individual parcels is not included here — verify by consulting the City’s zoning map or Planning Department. Not found in retrieved materials.

Source References

Allowable uses and how to read the use tables: § 20-21.030
Exemptions from land use permit requirements: § 20-21.040
Residential zoning districts and Table 2-2 explanatory text: Chapter 20-22 (see § 20-22.010 and Table 2-2)
Specific-use standards referenced in the tables (examples): § 20-42.050 (child day care), § 20-42.130 (ADUs), § 20-42.160 (outdoor dining), § 20-42.110 (outdoor display), and § 20-46 (cannabis).
Permit procedures (Zoning Clearance, MUP, CUP): § 20-52.020 and § 20-52.050.
Combining districts (purpose, mapping and applicability): Chapter 20-28 (e.g., § 20-28.010 and specific combining district text such as North Station Area -SA).
North Santa Rosa Station Area development standards (example numeric standards and encroachments): Station area tables (Tables 2-15 through 2-17) and related combining district text.

Additional internal guidance pages (linked in-line above):

Sources

Retrieved passages

Santa Rosa Zoning Code (Chapter 20-62) High relevance
Santa Rosa Zoning Code High relevance
Santa Rosa Zoning Code (§ 1) High relevance
Santa Rosa Zoning Code High relevance
Santa Rosa Zoning Code (Section 20-21.030) High relevance
Santa Rosa Zoning Code High relevance
Santa Rosa Zoning Code (§ 1) High relevance
Santa Rosa Zoning Code (Section 20-52.020) High relevance

Cited sections

Official Santa Rosa code library

Frequently asked questions

What can I build on an R‑1 lot in Santa Rosa?

R‑1 generally allows single‑family detached homes as a permitted use (Zoning Clearance required) while duplexes/multifamily may be limited or require MUP/CUP depending on precise subzone. Check the R‑1 row in Table 2‑2 and the development standards/Division 3 for numeric setbacks and height limits — the use table and general rules are in § 20-21.030.

Do I need a permit to operate a day‑care center?

Child care operations are listed in the use tables: small family day care homes are typically P in many residential zones, while child day care centers usually require MUP or P depending on the district. The specific use rules are in § 20-42.050 and you must check the district’s table (see Table 2‑2 / Table 2‑12).

What are Santa Rosa’s rules for ADUs?

ADUs are treated as an S (subject to specific standards) and are regulated by the ADU provisions at § 20-42.130; those rules control size, location, and when an ADU is allowed in residential zones. See Chapter 20‑42 for the full standards.

Where are downtown mixed‑use districts (CMU / SMU / MMU / NMU) used and what do they allow?

The Code applies CMU, SMU, MMU, and NMU in downtown areas to encourage combinations of housing, retail, services, maker spaces, and visitor-serving uses. Each district’s purpose and typical allowed mix is described in the zoning chapter; see the CMU/MMU/SMU/NMU descriptions and the downtown use tables for permit levels.

Can I put a small manufacturing or maker business in a mixed‑use downtown district?

Yes — the MMU (Maker Mixed Use) district is specifically intended for artisan shops, studios, limited light industrial, and maker‑oriented uses; permitted level depends on the exact use and intensity (check the MMU table and Chapter 20‑42 if the use is listed as S).

What if a use I want isn’t listed in the tables?

The Director can find a proposed unlisted use “similar and compatible” with a listed use and allow it only after making the findings in § 20-21.030.A.3; such determinations can be referred to the Planning Commission and are appealable.

Are there special distance limits for cannabis retail?

Yes — cannabis retail has special siting restrictions such as minimum setbacks (for example a 600‑foot minimum to certain sensitive uses is noted in the use table footnotes). Confirm the cannabis-specific rules in § 20‑46 and the use table footnotes.

Do I automatically need design review for a use that’s allowed?

Not always. A use allowed by Zoning Clearance may still require design review depending on the project type or if the decision authority finds it necessary. Design Review rules and applicability are in § 20-52.030; discretionary permits like MUP/CUP often incorporate design review. See Santa Rosa Design Review.

What does “P” vs “MUP” vs “CUP” mean in the use table?

“P” = permitted with a Zoning Clearance (§ 20-52.020), “MUP” = Minor Conditional Use Permit, and “CUP” = Conditional Use Permit (both in § 20‑52.050). Each permit has different submittal, noticing and approval standards.

Where do I find the exact setbacks, lot coverage and height for my site?

Numeric development standards live in the district tables, Division 3 development standards, and any applicable combining district (e.g., North Station Area tables). The zoning map will show the applicable zone(s); check Chapter 20‑22/23/24, Division 3, and the combining district text in Chapter 20‑28. If not in the materials you have, “verify with the jurisdiction.”

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