Local zoning · San Luis Obispo County

San Luis Obispo County — Zoning

Zoning under the San Luis Obispo County local zoning and planning code, with the controlling citations.

Ask a question free See coverage

Last reviewed: July 6, 2026

Overview

San Luis Obispo County regulates zoning for the unincorporated areas through Title 22 of the County Code, the Land Use Ordinance. It organizes land into mapped Land Use Categories (e.g., Agriculture, Residential Single-Family, Commercial Retail) and applies countywide development standards, with additional planning-area standards layered where needed. Title 22 applies inland; properties in the Coastal Zone fall under Title 23 (Coastal Zone Land Use Ordinance) instead (§ 22.01.050; see the “Applicability” rule below) .

The most important rule: If your parcel is in the Coastal Zone, Title 23 governs; otherwise, Title 22 governs the unincorporated areas (§ 22.01.050). Always verify which ordinance applies before you design or permit a project .

The County’s Official Land Use Maps (on file with the Department of Planning & Building) assign base categories and any combining designations to each parcel (§ 22.01.030; Table 2‑1) . Allowable uses and permit levels are set in § 22.06.030 and may be further limited or refined by planning area standards in Article 9 (§ 22.06.020.B) .

Link-outs for deeper dives: land use categories and mapping are summarized on our San Luis Obispo County Land Use page; dimensional rules live under Development Standards; off‑street Parking and Design Review have their own pages; and area‑ or resource‑based overlays are covered under Overlay Districts.

How SLO County organizes zoning

  • Title 22 adopts and implements the General Plan by map and text, incorporating the Official Land Use Maps and the framework for Land Use Categories and Combining Designations (§ 22.01.010; § 22.01.030) .
  • Land Use Categories and map symbols include: AG (Agriculture), RL (Rural Lands), RR (Residential Rural), RS (Residential Suburban), RSF (Residential Single‑Family), RMF (Residential Multi‑Family), OP (Office & Professional), CR (Commercial Retail), CS (Commercial Service), IND (Industrial), OS (Open Space), REC (Recreation), and PF (Public Facilities). Special purpose: DRSP (Dana Reserve Specific Plan). Combining designations include AR, FH, GSA, H, MRA, RE, SRA, TDCR, TDCS, among others (Table 2‑1; § 22.04.020) .
  • Allowable uses and their permit levels (Zoning Clearance, Site Plan Review, Minor Use Permit, Conditional Use Permit) are defined in § 22.06.030, with keys used in the ordinance tables (P, SP, MUP, CUP, A1, A2) (§ 22.06.010–.020) .

Countywide development standards you’ll use often

  • Front, side, and rear setbacks are established in § 22.10.140. Baselines include: residential front setback 25 ft (with adjustments for shallow lots and block averaging); commercial/office front setback 10 ft (0–5 ft in central business districts); industrial front setback 25 ft; multi‑family front setback 20 ft; residential rear setback 10 ft on sites <1 acre and 30 ft on sites ≥1 acre; urban/village side setbacks generally 10% of lot width, capped at 5 ft on small lots (§ 22.10.140.D–H) .
  • Maximum building heights by category (measured per § 22.10.090.B) include: Residential Single‑Family/Rural/Suburban 35 ft; Multi‑Family 40–45 ft by intensity; Commercial 40–45 ft (CBD up to 45 ft); Office & Professional 40 ft; Industrial 45 ft; Recreation 40 ft; Open Space 25 ft; Public Facilities 45 ft (§ 22.10.090.C) .
  • Multi‑family intensity and density: intensity factors (low/medium/high) determine units per acre (15/30/42), maximum floor area, and minimum open area (§ 22.10.130.B.2) .
  • Parking can’t occupy required front setbacks (limited exceptions for qualifying RMF projects) (§ 22.18.030) . See our Parking page for geometry and ratios.

Decision snapshot: frequently referenced standards

Topic Countywide baseline Notes Code Reference
Residential front setback 25 ft typical Shallow-lot reduction to 20 ft; block-averaging may allow down to 10 ft; multi‑family 20 ft § 22.10.140.D
Commercial/Office front setback 10 ft 0–5 ft in designated CBD segments; area plans may refine § 22.10.140.D.3; SLO area/CBD examples
Industrial front setback 25 ft Interior/flag lots follow side setback rules § 22.10.140.D.4
Side setback (urban/village) 10% lot width, 3–5 ft typical cap Larger sites ≥1 acre require 30 ft; adjustments possible § 22.10.140.E.1.a
Rear setback (residential) 10 ft (<1 acre) / 30 ft (≥1 acre) Accessory structures have specific allowances § 22.10.140.F.1
Height — RSF/RR/RS 35 ft Residential exceptions allow up to 45 ft with added setbacks § 22.10.090.C; § 22.10.090.C.2.b
Height — RMF 40–45 ft By intensity level § 22.10.090.C.1
Height — Commercial/OP 40–45 ft CBD up to 45 ft § 22.10.090.C.1
Height — IND 45 ft Exceptions for towers/equipment § 22.10.090.C.1–2

Note: These are countywide baselines; planning-area standards in Article 9 may be stricter and control where they conflict (§ 22.06.020.B; § 22.90.020) . See our Development Standards page for practical application tips.

District-by-district guide (unincorporated areas)

Agriculture (AG)

  • Purpose in practice: Working lands with crop and grazing uses; scattered rural homes.
  • Typical allowed uses: Single‑family dwellings (P), home occupations (P), residential accessory uses (P); crop production and grazing (A1); animal keeping (A2); agricultural accessory structures (P); caretaker quarters (P) (§ 22.06.030 tables) .
  • Key dimensional standards: Front setback 25 ft for residential; side/rear as in § 22.10.140; height generally 35 ft (§§ 22.10.140; 22.10.090.C.1) .
  • Where it applies: As mapped on Official Land Use Maps (§ 22.01.030) .

Rural Lands (RL)

  • Purpose in practice: Very low-intensity resource/conservation areas with limited development.
  • Typical allowed uses: Per § 22.06.030 (planning-area standards may remove some Industry/Processing uses). Example: the San Luis Obispo Sub‑area limits RL to uses listed in § 22.06.030 and excludes certain industrial categories (§ 22.98.062.A) . Not found in retrieved materials: a complete RL allowable‑use matrix.
  • Key dimensional standards: Countywide setbacks apply; height 35 ft (§§ 22.10.140; 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Residential, Rural (RR)

  • Purpose in practice: Large‑lot rural residential buffers around ag/open lands.
  • Typical allowed uses: One primary single‑family dwelling per legal parcel, unless a planning-area standard sets different density (§ 22.10.130.A.3) . Some planning areas set minimum parcel sizes (e.g., 10 acres in parts of the SLO Sub‑area) (§ 22.98.062.B.2) .
  • Key dimensional standards: Residential setbacks per § 22.10.140; height 35 ft (§ 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Residential, Suburban (RS)

  • Purpose in practice: Semi‑rural lots with suburban pattern and rural edges.
  • Typical allowed uses: Per § 22.06.030; planning-area standards may exclude specific uses (e.g., mobile home parks excluded in some RS areas) (§ 22.96.060.F.1) .
  • Key dimensional standards: Residential setbacks per § 22.10.140; height 35 ft (§ 22.10.090.C.1). Area‑specific parcel sizes (e.g., Evans Tract at 2.5–5 acres) can apply (§ 22.96.060.F.2) .
  • Where it applies: As mapped (§ 22.01.030) .

Residential, Single-Family (RSF)

  • Purpose in practice: Urban single‑family neighborhoods and small‑lot projects.
  • Typical allowed uses: Single‑family dwellings (P), residential accessory uses (P), home occupations (P) (§ 22.06.030 tables) .
  • Key dimensional standards: Front setback 25 ft (with shallow‑lot and block‑averaging adjustments), side/rear per § 22.10.140; height 35 ft countywide (§§ 22.10.140; 22.10.090.C.1) . Area standards can be stricter (e.g., in one South County segment, RSF homes with less than 75 ft frontage are capped at 18 ft without a MUP) (§ 22.98.054.E.1) . Planned Development and small‑lot SF programs allow modified setbacks and patterns with objective design standards (§§ 22.22.145; 22.30.475) .
  • Where it applies: As mapped (§ 22.01.030) .

Residential, Multi-Family (RMF)

  • Purpose in practice: Attached and clustered housing at urban densities.
  • Typical allowed uses: Multi‑family dwellings per § 22.06.030; design standards and frontage minima may apply in area plans (§ 22.98.054.F) .
  • Key dimensional standards: Intensity factors yield 15/30/42 units per acre; front setback 20 ft; site open‑area minima apply; height 40–45 ft by intensity (§ 22.10.130.B.2; § 22.10.140.D.2.f; § 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030); some subareas fix RMF ranges by plan (§ 22.98; exemplar standards shown for Nipomo and Shandon) .

Office & Professional (OP)

  • Purpose in practice: Professional and administrative offices.
  • Typical allowed uses: Per § 22.06.030 (office/professional and related service uses). Not found in retrieved materials: a full OP use table excerpt.
  • Key dimensional standards: Front setback 10 ft; height 40 ft (§§ 22.10.140.D.3; 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Commercial, Retail (CR)

  • Purpose in practice: General retail, food, services, and (in designated areas) mixed use.
  • Typical allowed uses: Retail (A1), groceries (A1), restaurants (A1), gas stations (MUP) per § 22.06.030; local mixed‑use permissions may be mapped and capped by subarea (§ 22.06.030 tables; Shandon CR examples) .
  • Key dimensional standards: Front setback 10 ft (CBD 0–5 ft where mapped); height 40–45 ft; parking cannot occupy front setback (§§ 22.10.140.D.3; 22.10.090.C.1; 22.18.030) .
  • Where it applies: As mapped, often focused on community/village centers (§ 22.01.030) .

Commercial, Service (CS)

  • Purpose in practice: Service commercial, repair, light fabrication, and related uses.
  • Typical allowed uses: Established by § 22.06.030; some subareas require a Minor Use Permit for initial construction or certain change‑of‑use scenarios to address infrastructure and externalities (§ 22.98 area examples) .
  • Key dimensional standards: Front setback 10 ft; height 40–45 ft; parking behind or to the side where design plans call for it (§§ 22.10.140.D.3; 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Industrial (IND)

  • Purpose in practice: Manufacturing, warehousing, distribution, and utilities.
  • Typical allowed uses: By § 22.06.030; some corridors limit uses on railroad‑owned lands (e.g., SLO sub‑area) (§ 22.98.054.C.1) .
  • Key dimensional standards: Front setback 25 ft; height 45 ft; rear setback exceptions when abutting alleys or residential (§§ 22.10.140.D.4; 22.10.140.F.2; 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Open Space (OS)

  • Purpose in practice: Conservation/open space with limited structural use; part of the County’s Open Space Zoning framework (§ 22.01.040.A) .
  • Typical allowed uses: Determined by § 22.06.030 and area standards; examples include trails, utilities, and limited renewable energy in mapped OS areas in some communities (area example) .
  • Key dimensional standards: Height 25 ft; setbacks per § 22.10.140 (§ 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Recreation (REC)

  • Purpose in practice: Parks, active recreation, and visitor facilities.
  • Typical allowed uses: Libraries/museums, outdoor sports, public assembly, temporary events; subareas may narrow the list (§ 22.98.054.D; § 22.06.030) .
  • Key dimensional standards: Countywide front setback 10 ft for REC (area plans may require 20 ft with landscape parkway) (§ 22.10.140.D.5; § 22.98.054.D.3) . Height 40 ft (§ 22.10.090.C.1) .
  • Where it applies: As mapped (§ 22.01.030) .

Public Facilities (PF)

  • Purpose in practice: Government buildings, schools, utilities.
  • Typical allowed uses: Per § 22.06.030 and any site‑specific planning‑area standards (e.g., some PF sites require a MUP) (area example) .
  • Key dimensional standards: Height 45 ft (§ 22.10.090.C.1); setbacks per § 22.10.140 (verify for project type) .
  • Where it applies: As mapped (§ 22.01.030) .

Special district: Dalidio Ranch Zoning District

  • Purpose: A voter‑enacted zoning district with its own independent standards; it is not subject to the rest of Title 22 except Chapter 22.113 and applicable Title 19 grading/building provisions (§§ 22.113.010–.020) .
  • Permitting: Consistent applications must be granted ministerially (§ 22.113.020) . Verify with the jurisdiction.

Overlays and planning-area standards that change the baseline

  • Combining designations (e.g., AR, FH, SRA, H) layer on top of base categories (§ 22.04.020 Table 2‑1). They can change uses, heights, or siting; for example, SRA/Highway Corridor Design Standards regulate siting on scenic corridors and often cap height at 25 ft for ministerial approvals (§ 22.10.095; “Building features”) .
  • Planning-area standards (Article 9) are mandatory and control where they conflict with general rules (§ 22.90.020) . See our Overlay Districts page for how to layer these with your base category.

Selected use permissions (quick read)

  • Single‑family dwellings are permitted (P) in AG, RSF, RMF columns of the use tables; home occupations and residential accessory uses are typically permitted; agricultural accessory structures and crop production are allowed/allowable in AG with A1/A2 triggers (see § 22.06.030 keys) .
  • Retail, groceries, and restaurants are allowable in CR, often at MUP/A1 levels per sublisting; gas stations typically require an MUP (§ 22.06.030 Retail Trade tables) .
  • Parking location, landscaping, and design features are controlled by objective standards (see § 22.18.030; Chapter 22.16) and by local design plans when applicable; Planned Developments must demonstrate consistency with Countywide Design Guidelines (§ 22.22.145.C) .

Practical notes and cross-links

  • Setbacks, heights, and lot standards interact—e.g., height increases can trigger wider setbacks (§ 22.10.090.C.2.b) . See Development Standards.
  • Some neighborhoods impose closer streetwalls in mapped CBDs or mixed-use nodes; check the planning-area chapter for your site (examples: Shandon CBD, Mission Street standards) .
  • Variations, height adjustments, and setback adjustments are processed under objective procedures in Article 7—see Variances and Exceptions.

Checklist

  • Confirm whether your parcel is inland (Title 22) or in the Coastal Zone (Title 23) (§ 22.01.050) .
  • Identify your base Land Use Category and any combining designations on the Official Land Use Maps (§ 22.01.030; Table 2‑1) .
  • Verify allowable uses and permit level in § 22.06.030; note any stricter planning-area standards in Article 9 (§ 22.06.020.B) .
  • Lay out your project to meet setbacks, heights, and open area standards (§§ 22.10.140; 22.10.090; 22.10.130) and confirm Parking placement (§ 22.18.030) .
  • Check for design triggers (e.g., Planned Development, CBD frontage) and required consistency with County design guidance (§ 22.22.145) and local plans; see Design Review .
  • If proposing clustering or density/intensity options, apply § 22.22.140 (Cluster Division) and § 22.10.130.B.2 (RMF intensity) where applicable .
  • If you need relief from objective standards, explore adjustments/variances per Article 7; see Variances and Exceptions.

Risks & Ambiguities

Issue Why it matters What to verify
Inland vs. Coastal Zone line Applies a different ordinance (Title 22 vs. Title 23) Confirm jurisdiction under § 22.01.050 before design
Planning-area overrides Local standards can change use lists, setbacks, and heights Read the Article 9 chapter for your planning area (§ 22.90.020)
Height measurement and exceptions How height is measured affects design and any added setback Use § 22.10.090.B–C, including residential exceptions
Mixed-use in CR Only allowed where a plan explicitly maps it Check mapped mixed-use segments in your area plan (e.g., Shandon CR standards)
RMF intensity factor Drives units/acre and open area; can change parking and layout Apply § 22.10.130.B.2 and planning-area caps if any
SRA/Scenic corridors Adds siting/height limits (often 25 ft for ministerial) Apply § 22.10.095 and any SRA references in Article 9
Nonconforming situations Existing uses/structures are treated differently See Title 22’s treatment of existing uses (§ 22.01.050.C) and Nonconforming Uses

Plain-English Summary

In unincorporated San Luis Obispo County, each parcel carries a mapped Land Use Category and sometimes an overlay. Those maps point you to what you can build, what permit you’ll need, and the setbacks and height limits you must meet. Start by confirming whether you’re inland (Title 22) or in the Coastal Zone (Title 23), then apply the countywide standards and any local planning-area rules that override the basics.

Information Gaps

  • Not found in retrieved materials: a complete allowable-use matrix excerpt for Rural Lands (RL) and Office & Professional (OP) beyond the general references to § 22.06.030.
  • Not found in retrieved materials: implementing development standards for the Dana Reserve Specific Plan (DRSP) beyond its map symbol in Table 2‑1.

Source References

  • Title 22 — Purpose, Applicability, Official Maps: § 22.01.010; § 22.01.030; § 22.01.050
  • Land Use Categories & Combining Designations (Table 2‑1): § 22.04.020
  • Allowable Uses & Permit Levels: § 22.06.010–.030 (tables and key)
  • Development Standards — Setbacks: § 22.10.140; Parking location: § 22.18.030; Heights: § 22.10.090; Residential Density/Intensity: § 22.10.130.B.2
  • Cluster Division and Planned Development: § 22.22.140; § 22.22.145; Small‑Lot SF: § 22.30.475
  • Planning-Area Standards (control where conflict): § 22.90.020; examples: § 22.96.060; § 22.98.054; § 22.98.062
  • SRA/Highway Corridor Design Standards: § 22.10.095 (with height/siting criteria)
  • Dalidio Ranch Zoning District: § 22.113.010–.030
  • Related topics: Land Use, Development Standards, Parking, Design Review, Overlay Districts, Variances and Exceptions, California Building Standards Code, California ADU law

Sources

Retrieved passages

  • San Luis Obispo County Zoning Code (Section 22.06.060c) Medium relevance
  • San Luis Obispo County Zoning Code (Title 22) Medium relevance
  • San Luis Obispo County Zoning Code (section that) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.06.060c) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.22.140) Medium relevance
  • San Luis Obispo County Zoning Code (ARTICLE 11) Medium relevance
  • San Luis Obispo County Zoning Code (Chapter 7) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.70.020) Medium relevance
  • San Luis Obispo County Zoning Code High relevance
  • San Luis Obispo County Zoning Code (Section may) High relevance
  • San Luis Obispo County Zoning Code (Section 22.30.500) High relevance
  • San Luis Obispo County Zoning Code (Chapter 22.32) High relevance
  • San Luis Obispo County Zoning Code (Chapter 22.22) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.22.140.D.) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.70.030) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.06.030) High relevance
  • San Luis Obispo County Zoning Code (Section 22.22.080.) High relevance
  • San Luis Obispo County Zoning Code (Chapter 6) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.30.410) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.54.020.F.) Medium relevance
  • San Luis Obispo County Zoning Code (Chapter 21.02) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.70.030) High relevance
  • San Luis Obispo County Zoning Code (Chapter 22.16) High relevance
  • San Luis Obispo County Zoning Code (Section 22.10.130) High relevance
  • San Luis Obispo County Zoning Code (Section 22.70.030.) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.70.030.) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.10.140.D.2.c) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.18.020.H) High relevance
  • San Luis Obispo County Zoning Code (Section 22.06.030) High relevance
  • San Luis Obispo County Zoning Code (Section 22.10.140) Medium relevance
  • San Luis Obispo County Zoning Code (Section 22.10.140.D.2.c) Medium relevance
  • CBC § 22.10.090 (Section 22.10.090) Medium relevance

Cited sections

Frequently asked questions

What can I build on an RSF lot in unincorporated San Luis Obispo County?

RSF is intended for single‑family neighborhoods. Single‑family dwellings, residential accessory uses, and home occupations are typically permitted; check § 22.06.030 for any site‑specific permit triggers. Apply standard residential setbacks (25 ft front, etc.) and 35 ft height unless a planning‑area standard is stricter (§ 22.06.030; § 22.10.140; § 22.10.090) .

Are mixed-use buildings allowed in Commercial Retail (CR)?

Only where a planning‑area map explicitly identifies mixed‑use nodes and sets limits (e.g., specific CR segments in Shandon). Elsewhere, CR is retail‑focused; confirm your segment’s standards before designing housing above shops (§ 22.06.030; Shandon CR mixed-use standards) .

What are the basic setbacks for a new house?

Countywide, most residential projects observe a 25 ft front setback (block averaging and shallow‑lot reductions can apply), side setbacks per lot width (3–5 ft typical in urban/village areas), and a 10–30 ft rear setback depending on lot size (§ 22.10.140.D–F) .

How tall can my building be?

Heights vary by category: RSF/RR/RS are 35 ft, multi‑family ranges 40–45 ft by intensity, commercial/office 40–45 ft (CBD up to 45 ft), industrial 45 ft, open space 25 ft. Residential height can be adjusted up to 45 ft with greater setbacks (§ 22.10.090.C) .

Do planning-area standards override the countywide rules?

Yes. If a planning-area standard conflicts with a general Title 22 rule, the planning-area standard controls. Always check the Article 9 chapter for your area before finalizing plans (§ 22.90.020) .

What if my site is in a Sensitive Resource Area (SRA) or scenic corridor?

You’ll have additional siting and design limits—e.g., keeping development off ridgetops and often capping height at 25 ft for ministerial approvals along scenic highway corridors (§ 22.10.095) .

Can I cluster lots or do a small-lot single-family neighborhood?

Yes. Cluster Divisions can reduce parcel sizes while preserving open space (§ 22.22.140), and Small‑Lot Single‑Family/Planned Developments provide objective design pathways with modified setbacks and common area requirements (§§ 22.22.145; 22.30.475) .

Where do ADU rules fit into this?

ADUs are governed by state law and the County’s objective standards; see our California ADU law page. Design your main project to meet Title 22; then layer ADU compliance on top. Verify local coastal constraints if in Title 23 areas.

What if my use or structure was legal but no longer conforms?

Title 22 explains how existing uses/structures are treated. Generally, they may continue, but expansions/alterations can trigger current standards or permits (§ 22.01.050.C). See also our Nonconforming Uses page .

How do I measure height for my plans?

Use the average of highest/lowest natural grade where the exterior walls touch grade (with limited exceptions for filled sites), then apply your category’s limit and any overlay constraints (§ 22.10.090.B–C) .

More in San Luis Obispo County code

Ask about any San Luis Obispo County property

Get a cited, plain-English answer on San Luis Obispo County zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial

More San Luis Obispo County zoning topics

San Luis Obispo County Land Use

San Luis Obispo County Development Standards

San Luis Obispo County Parking

San Luis Obispo County Design Review

San Luis Obispo County Overlay Districts

San Luis Obispo County Historic Preservation

San Luis Obispo County Signage

San Luis Obispo County Nonconforming Uses

San Luis Obispo County Variances and Exceptions

San Luis Obispo County Landscaping and Screening

San Luis Obispo County overview