Local zoning · Sebastopol

Sebastopol — Zoning

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

Ask a question free See coverage

Last reviewed: July 2, 2026

Overview

This page summarizes what the City of Sebastopol’s adopted Zoning Code (Title 17) actually says about zoning: the official districts, how the Zoning Map is used, combining/overlay districts, and the most decision‑relevant development standards and use rules. It is drawn from the Draft Title 17 Zoning Code (the City’s zoning ordinance text) and cites the controlling sections so you can verify specifics for a particular parcel. See the notes below on where the code requires consultation with other chapters such as parking, design review, and ADUs. Verify with the jurisdiction for parcel‑specific interpretations and the live adopted map. § 17.04.040

First‑use links to related local pages: the citywide Sebastopol Development Standards are referred to repeatedly here; parking rules live at Sebastopol Parking; read about Sebastopol Design Review when a design permit is referenced; overlay rules appear under Sebastopol Overlay Districts; information on accessory units is at Sebastopol ADUs; general historic rules at Sebastopol Historic Preservation; and the statewide building regulations are the California Building Standards Code.

How the Zoning Code is structured and how the Map works

  • The Code is a districting plan consisting of the Zoning Map and the text rules that apply to each district. The official Zoning Map on file with the Planning Department is incorporated by reference. § 17.04.010 and § 17.04.040
  • The map applies to all property within the City except streets, alleys and paths; where a boundary on the map is ambiguous the code establishes interpretation rules and gives the Planning Commission authority to resolve remaining uncertainty. § 17.10.020 and § 17.10.030

District-by-district breakdown

Below each district is summarized using the Code’s stated purpose, typical permitted uses (as described or by reference to the tables), and the key dimensional or development standards when the text provides them. Where the ordinance points to a table (for permitted uses or dimensional standards) that table is cited — consult the table for detailed use lists and exceptions.

Note: many numeric standards are contained in chapter tables (e.g., Table 17.20‑1, Table 17.20‑2, Table 17.25‑2). Where the Code references another chapter for related regulation (parking, signs, ADUs) you must check those chapters or linked pages. See, for example, the cross‑references to parking requirements. § 17.20.030 and § 17.230.070

R1 — Single Family Residential

  • Purpose: implement the “Very Low Density Residential” General Plan category; preserve rural/agricultural setting; densities up to 1 unit per acre. § 17.20.010
  • Typical permitted uses: single‑family homes; accessory uses (see Table 17.20‑1 / permitted uses for residential districts). § 17.20.020
  • Key standards: Refer to Table 17.20‑2 for setbacks, lot sizes, lot coverage and height standards for R districts; specific numeric values are in the development standards table (Chapter 17.20). § 17.20.030

R2 — Single Family Residential

  • Purpose: “Low Density Residential”; densities up to approximately 2.5 units/acre. § 17.20.010
  • Uses and standards: see Table 17.20‑1 and Table 17.20‑2. § 17.20.020, § 17.20.030

R3 — Single Family Residential

  • Purpose: “Medium Density Residential”; densities up to ≈5.4 units/acre. § 17.20.010
  • Uses and standards: Table 17.20‑1 and Table 17.20‑2 apply. § 17.20.020–030

R4 — Single Family Residential‑4

  • Purpose: medium density; densities up to ≈8.7 units/acre. § 17.20.010
  • Uses and standards: Table 17.20‑1 and Table 17.20‑2. § 17.20.020–030

R5 — Single Family & Multifamily Residential

  • Purpose: upper end of medium density; allows townhome, condominium, duplex, triplex, fourplex; densities up to 12 units/acre. § 17.20.010

R6 — Multifamily Residential

  • Purpose: lower high‑density residential; appropriate for attached single‑family and multifamily; densities ~12.1–17.4 units/acre. § 17.20.010

R7 — Multifamily Residential

  • Purpose: high‑density; densities ~12.1–25 units/acre. § 17.20.010

RMH — Mobile Home Park

  • Purpose: comprehensive mobile home park regulation and master‑plan approach; chapter sets park standards (spaces, storage, fences, etc.). See mobile home park standards in Chapter 17.20. § 17.20.010 and associated mobile home park standards in Chapter 17.20

CO — Office Commercial

  • Purpose: mixture of professional, medical, administrative offices, small‑scale retail, and mixed‑use residential; appropriate along major thoroughfares and adjacent to neighborhoods. § 17.25.010
  • Key numeric standards (Table 17.25‑2): Minimum lot area 6,000 sf; Maximum building height 32 ft (2 stories). See Table 17.25‑2 for full list. § 17.25.030

CG — General Commercial

  • Purpose: local‑serving retail, specialty shops, banks, motels, offices, some residential; discourages large regional outlets. § 17.25.010
  • Key standards (Table 17.25‑2): Minimum lot area 6,000 sf; Maximum building height 32 ft (2 stories). § 17.25.030

CD — Central Core (Downtown)

  • Purpose: downtown historic retail core; allows office, retail, restaurants, mixed‑use residential to increase downtown vibrancy. § 17.25.010
  • Key standards (Table 17.25‑2): Minimum lot area 6,000 sf; Maximum building height 40 ft (3 stories) / 50 ft (4 stories) where allowed. § 17.25.030

M — Industrial

  • Purpose: light and general industrial uses (manufacture, assembly, storage not harmful to welfare). § 17.25.010
  • Key standards: Minimum lot area 15,000 sf; Maximum building height 35 ft (Table 17.25‑2). § 17.25.030

OLM — Office/Light Industrial

  • Purpose: business parks combining office, R&D, labs, warehousing, childcare, limited food service; supports mixed uses compatible with light industrial. § 17.25.010
  • Key standards: Minimum lot area 130,680 sf; Maximum building height 40 ft (3 stories) (Table 17.25‑2). § 17.25.030

CM — Commercial Industrial

  • Purpose: encourage local makers, small‑ and mid‑sized production and related retail/residential uses. § 17.25.010
  • Key standards: Minimum lot area 15,000 sf; Maximum building height 35 ft (see Table 17.25‑2). § 17.25.030

CF — Community Facilities

  • Purpose and allowed uses: public or quasi‑public uses (schools, parks, public buildings) — see Chapter 17.30 for permitted uses and standards. § 17.30.010–020

OS — Open Space

  • Purpose: preserve open areas; permitted uses and development constraints are in Chapter 17.32. § 17.32.010–020

PC — Planned Community

  • Purpose: special planned communities with development plans, policy statements and minimum lot/width frontage standards in Chapter 17.40. § 17.40.010–060

W — Wetlands District (W) and combining districts WS and WF

  • Purpose: protect primary wetlands and adjacent areas; W = Primary Wetlands, WS = Secondary Wetlands (combining), WF = Wetlands Fringe (combining). Uses and development criteria are stricter; many open uses only allowed by right (parks, restoration) and most other uses require a conditional use permit and special surveys. See § 17.44.010–050 for purpose, permitted uses, development criteria and required vernal pool/rare plant surveys. § 17.44.010–050
  • Special procedural requirements: applications in W/WS require written comments from state/federal resource agencies and referral to local environmental organizations before the submittal is complete. § 17.44.040

Combining / Overlay Districts called out by name

  • ESOS (Environmental and Scenic Open Space), WF and WS (wetlands combining), and REC (Recovery combining) are explicit combining districts in the Code and modify the base district standards where applied. See Chapters 17.46, 17.44, and 17.48. § 17.46.010, § 17.44.010, § 17.48.010

Key decision‑relevant standards (summary table)

District / Topic Most relevant decision points (short) Code Reference
Zoning Map application / interpretation Map governs all property; Planning Commission interprets ambiguous map boundaries § 17.10.020–030
R1–R7 residential districts Purposes, allowed uses (Table 17.20‑1), and dimensional standards (Table 17.20‑2) — densities stated in § 17.20.010 § 17.20.010–030
CO / CG / CD / M / OLM / CM Minimum lot areas, lot width and maximum heights summarized in Table 17.25‑2 (e.g., CO min lot 6,000 sf; CO max height 32 ft) Table 17.25‑2 / § 17.25.030
Small Lot Subdivision rules Front setback 15 ft, rear 10 ft, interior side 4 ft, garage setback 20 ft, max height 30 ft, max lot coverage 65%; parking per SMC 17.110 § 17.230.030–070
Wetlands & combining districts Primary wetlands largely limited to passive open uses; WS/WF modify base district; vernal pool/ecological surveys and multiple agency referrals required § 17.44.010–050
General height/yard exceptions Chimneys, vents, solar equipment allowed up to 5 ft above height limit; other statewide/code cross‑references apply § 17.100.020

(For full permitted‑use matrices and all dimensional columns, consult Table 17.20‑1, Table 17.20‑2 and Table 17.25‑2 in the Code.) § 17.20.020, § 17.20.030, § 17.25.030

Practical guidance & comparisons (plain‑English synthesis)

  • If your property is in a residential district (R1–R7) the Code ties allowable density ranges to that district; moving from R1 to R5/R6/R7 meaningfully changes the range of permitted multifamily forms and the likely allowable unit count. § 17.20.010
  • Commercial parcels are distinguished by scale and intensity: CO is office‑oriented and low‑scale; CG is local retail; CD is the downtown core with taller/more intense mixed‑use potential as shown in Table 17.25‑2. § 17.25.010
  • Combining districts (wetlands, ESOS, REC) overlay the base zone and often add preapproval requirements (surveys, agency consultations) that can substantially delay or condition approvals — plan for the extra studies and agency coordination. § 17.44.040 and § 17.46.050
  • For most projects you must also confirm parking requirements (see the City’s parking chapter) and whether design review applies; the Zoning Code cross‑references those separate chapters. See the City’s Sebastopol Parking and Sebastopol Design Review pages and the Code cross references. § 17.230.070

Checklist — what an applicant must satisfy (typical)

  • Confirm official zoning designation on the City’s adopted Zoning Map and whether any combining district overlays apply (§ 17.10.020–030).
  • Verify that the proposed use is listed as permitted or conditionally permitted in the district’s use table (Table 17.20‑1 or the commercial use table) (§ 17.20.020, § 17.25.020).
  • Meet dimensional standards (setbacks, lot coverage, height) in the applicable table (Table 17.20‑2 or Table 17.25‑2) (§ 17.20.030, § 17.25.030).
  • Provide required parking per the parking chapter and the zoning‑district cross‑references (see § 17.230.070 and Chapter 17.110).
  • If in a wetland or other combining district, include required ecological studies and agency comments (State Dept. Fish & Wildlife, Army Corps, RWQCB, etc.) as specified by § 17.44.040.
  • Determine whether Design Review or conditional use/variance is required and prepare to meet those findings and noticing rules (see Chapters 17.400+ and the design review chapter). § 17.415.010 and related procedure chapters.
  • For ADU proposals, follow code standards for accessory units and the City’s ADU page; check cross‑references in Chapter 17.220. § 17.220 (referenced in the Code).

Risks & Ambiguities

Issue Why it matters What to verify
Zoning map boundary ambiguity Map scale/graphic boundaries can be imprecise — wrong side of a line can change allowed uses and standards Request official map interpretation from Planning; the Planning Commission can determine boundaries per § 17.10.030.
Combining district controls (WF/WS/ESOS) Combining districts can add restrictions, surveys, and agency referrals that materially change feasibility and timing Check whether the parcel is in a combining district and what additional surveys (e.g., vernal pool/rare plant) are required per § 17.44.040–050.
Table cross‑references (uses vs. exceptions) Use tables have footnotes and size thresholds (e.g., retail >1,500 sf requires CUP in some zones) Always read the footnotes in Table 17.20‑1 / 17.25‑2 and tie your use to the table row; see § 17.20.020 and Table captions.
Parcel‑specific site constraints (floodplain, frontage) Floodplain/wetland locations or frontage minimums can preclude otherwise allowed uses Confirm floodplain, frontage and lot area requirements in the applicable chapter (e.g., flood rules referenced in § 17.44.040 C) and with Public Works.
Procedural triggers (CUP, variance, design review) A project that looks “permitted” on first glance may still require discretionary review and findings Confirm whether the use is marked “C” (conditional) in the use tables or whether design review or a variance is required (Chapters 17.415, 17.420). § 17.415.010, § 17.420.010.
Missing numeric specifics in text excerpts here Not every numeric standard is reproduced in the snippets you see on this page Consult the full Table 17.20‑2 and Table 17.25‑2 in the official ordinance and verify with Planning. Not found in retrieved materials (for any number not explicitly cited above). Verify with the jurisdiction.

Plain‑English Summary

Sebastopol’s Title 17 divides the city into specific base zones (R1–R7, CO, CG, CD, M, OLM, CM, CF, OS, PC, etc.) and several combining/overlay districts (notably wetlands W/WS/WF, ESOS, and REC). What you can build on a parcel depends first on the map designation, then on the permitted‑use table for that district, and finally on dimensional standards in the development standards tables — with additional cross‑checks for parking, design review, wetlands surveys, and other chapter requirements. § 17.10.020, § 17.20.020–030, § 17.25.030, § 17.44.010–040

Source References

  • City of Sebastopol Draft Title 17: Zoning Code — general adoption, title and scope: § 17.04.010 – § 17.04.050.
  • Zoning districts and Zoning Map: § 17.10.010 – § 17.10.030 (list of base districts and map interpretation rules).
  • Residential districts (purpose, uses, standards): § 17.20.010 – § 17.20.030 (Tables 17.20‑1 and 17.20‑2 referenced).
  • Commercial/Office/Industrial districts (purpose, allowed uses, Table 17.25‑2 development standards): § 17.25.010 – § 17.25.030 (Table 17.25‑2).
  • Small Lot Subdivision standards (setbacks, height, coverage, parking reference): Chapter 17.230 (e.g., § 17.230.030–070).
  • Wetlands districts and combining district procedures/requirements: Chapter 17.44 (§ 17.44.010–050, § 17.44.040).
  • General height/Yard exceptions and cross‑district rules: Chapter 17.100 (e.g., § 17.100.020).
  • Procedural chapters (conditional use, variances, administrative procedures): Chapters 17.400–17.420 (Table of contents and procedure references).

Sources

Retrieved passages

  • Sebastopol Zoning Code (Title 17) High relevance
  • Sebastopol Zoning Code (Title 17) High relevance
  • Sebastopol Zoning Code (section are) High relevance
  • Sebastopol Zoning Code (Chapter 17.20) High relevance
  • Sebastopol Zoning Code (Title 17) High relevance
  • Sebastopol Zoning Code (Title 17) High relevance
  • Sebastopol Zoning Code (Title 17) High relevance
  • Sebastopol Zoning Code (Title 17) High relevance

Cited sections

Frequently asked questions

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

In the R‑1 district the Code contemplates very low‑density, single‑family development; densities are limited to 1 unit per acre, and the permitted uses and accessory rules are listed in the residential use table (Table 17.20‑1). For precise setback, height and lot coverage numbers consult Table 17.20‑2 and Chapter 17.20; whether an accessory dwelling unit or other change is allowed also depends on ADU rules in Chapter 17.220. § 17.20.010–030

What are Sebastopol’s setback requirements for small‑lot subdivisions?

Small lot subdivisions have their own set of minimum yards: a 10 ft rear yard, 15 ft front yard (porches may encroach up to 7 ft), 4 ft interior side yards (except attached walls), and a garage setback of 20 ft from the sidewalk or street line. Maximum height is 30 ft and maximum lot coverage 65%; parking must comply with Chapter 17.110. § 17.230.030–060, § 17.230.070

Do overlay/combining districts change what I can build?

Yes — combining districts such as WS, WF, ESOS, and REC modify or add standards to the underlying base zone. For example, the Wetlands W/WS/WF districts restrict uses in wetland areas and require additional environmental surveys and agency comments for discretionary approvals. Check the combining district chapter that overlays your parcel to see the additional submittal and decision requirements. § 17.44.010–050, § 17.46.010

Where do I find the permitted uses for commercial zones and size limits?

Permitted and conditional uses in CO, CG, CD, M, OLM, and CM are listed in the commercial use tables referenced in Chapter 17.25 (Table 17.25‑2 and associated use tables). The Code also sets building size thresholds and maximum floor area for specific uses in Table 17.25‑2. Consult § 17.25.010–030 and Table 17.25‑2 for the exact rules. § 17.25.010–030

Is the Zoning Map definitive or can boundary lines be changed?

The official Zoning Map on file with the Planning Department is incorporated into the Code and is authoritative for zoning designations; the Planning Commission interprets ambiguous boundaries and the Council may adopt map changes per the code procedures. If a lot is split by a zone line the Planning Commission will determine the precise boundary. § 17.04.040 and § 17.10.030 D

Do wetlands overlays require extra agency review?

Yes — projects in the W or WS Combining Districts must include written comments, recommendations or requirements from agencies such as the State Department of Fish and Wildlife, U.S. Army Corps of Engineers, U.S. Fish and Wildlife Service, and the Regional Water Quality Control Board as part of an application; the Code treats applications as incomplete until such items are filed. Plan for these referrals and ecological studies. § 17.44.040

Where are parking requirements referenced in the zoning rules?

The zoning chapters repeatedly cross‑reference the City’s parking standards. For example, the small lot subdivision rules explicitly say parking shall be provided as required by SMC 17.110. Consult the parking chapter and the district development standards together when designing a project. § 17.230.070

Are there special downtown (CD) restrictions for large retail or formula businesses?

The CD district is intended to preserve a historic, pedestrian‑oriented downtown; some uses may be limited by size and design requirements in the use tables and by formula‑business considerations in the commercial standards. See Table 17.25‑2 and the use table footnotes and design/compatibility criteria in the commercial chapters for specific limits. § 17.25.010 and Table 17.25‑2.

Do I always need Design Review?

Not always — whether design review applies depends on the district, the project type, and the thresholds listed in the Code; many discretionary permits trigger design review and some districts (or the Central Core) have specific design rules. Check the design review chapter and the procedural chapters (e.g., Chapters 17.400+) to see if your project requires design review. § 17.415.010 and related procedure chapters.

Can I build an ADU in Sebastopol and where is the standard?

ADUs are addressed in a dedicated chapter (Chapter 17.220) and the Zoning Code notes ADU cross‑references and expedited allowances in certain reconstruction contexts; consult the ADU chapter and the City’s ADU page for state law interplay and local numeric standards. § 17.220 (referenced) ---

More in Sebastopol code

Ask about any Sebastopol property

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

Start Free Trial

More Sebastopol zoning topics

Sebastopol Land Use

Sebastopol Development Standards

Sebastopol Parking

Sebastopol Design Review

Sebastopol Overlay Districts

Sebastopol Historic Preservation

Sebastopol Signage

Sebastopol Nonconforming Uses

Sebastopol Variances and Exceptions

Sebastopol Landscaping and Screening

Sebastopol overview