Local zoning · Sebastopol

Sebastopol — Design Review

Q: What must my design review application include?

Per § 17.450.020 , plan sets should include all elevations, relationship to surrounding buildings, proposed landscaping, building placement, off‑street parking layout, and preliminary grading as required; licensed designers must prepare drawings where state law requires .

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

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Last reviewed: July 2, 2026

Overview

Design review in Sebastopol is a formal, discretionary check on the appearance, siting, and neighborhood compatibility of new development and substantial exterior changes. The process and triggers are codified in Title 17 (Draft Title 17: Zoning Code), primarily in § 17.450.010 through § 17.450.040; application contents and procedural cross-references are handled by the general procedures chapter (see SMC 17.400 series) . For project-level technical standards you will repeatedly consult the City's development tables and overlays (setbacks, parking, and special districts) rather than the building code; see the Development Standards and Parking links below.

When this page names a related topic the first natural mention is linked:

design review → /us/california/sebastopol/zoning
development standards → /us/california/sebastopol/development-standards
parking → /us/california/sebastopol/parking
overlay districts → /us/california/sebastopol/overlay-districts
Historic Preservation → /us/california/sebastopol/historic-preservation
Signage → /us/california/sebastopol/signage
ADUs → /us/california/sebastopol/adu
California Building Standards Code → /us/california/building-codes

(Use these links when you need the City's summary pages for those topics.)

How Design Review works in Sebastopol (core rules)

What triggers review: A design review permit is required for the situations listed in § 17.450.010(A) — chiefly: (1) new residential developments of three or more contiguous lots totaling three or more units; (2) new single-family residences in new subdivisions of three or more units; and (3) proposed buildings, substantial additions, or substantial exterior modifications that require a building permit in districts other than single‑family or duplex districts. See § 17.450.010 for the full trigger list .
Exemptions: rooftop photovoltaic systems are explicitly exempt unless the Planning Director determines review is warranted because of unusual characteristics; other project-specific exemptions appear elsewhere (e.g., Chapter 17.46 resource analysis exemptions) — see § 17.450.010(B) .
Application contents: applications must follow the general application filing rules (SMC 17.400.030) and include architectural elevations, relationship to surrounding buildings, and proposed landscaping, plus off‑street parking and preliminary grading as needed; drawings must be prepared by licensed professionals where required by State law (see § 17.450.020) .
Decision-makers and delegation: the Design Review Board is the primary review body but may delegate minor exterior alteration approvals to the Planning Director; decisions must find compatibility with neighborhood character, appropriate transitions to adjacent properties and rights-of-way, and conformity with adopted guidelines (see § 17.450.030(A–C)) .
Notice, hearings, and appeals: public notice and hearing requirements depend on the approval type (Planning Director vs. Design Review Board vs. Planning Commission) and are summarized in Tables 17.400‑1/17.400‑2; appeals from administrative design-review determinations go to the Planning Commission or Design Review Board as specified, and appeals from board decisions may go to the City Council per the appeal chapters (see § 17.450.040 and § 17.455.010–.020) .
Conditions, revocation, and term: approvals are subject to conditions and adherence to approved plans; approvals expire if rights are not exercised within three years and may be suspended/revoked for noncompliance (see § 17.400.090) .

District-by-district breakdown (where design review applies and what standards matter)

Below are the zoning districts called out in Title 17 with the design‑review implications and the most decision‑relevant standards you will check during review. Bolded district names and standards are drawn from the zoning tables and chapter headings in the draft Zoning Code.

Note: Verify parcel-specific applicability against the official City zoning map; this page summarizes code text only. “Typical permitted uses” is a plain‑English summary of the underlying tables in Title 17 (see cited tables).

Residential districts — R‑1, R‑2, R‑3, R‑4, R‑5, R‑6, R‑7, RMH

Purpose / where it applies: standard range from rural/low density (R‑1) to higher‑density urban residential (R‑4/R‑5/etc); the overall zoning code purpose is stated in § 17.04.050 .
Typical permitted uses: single‑family homes, duplexes and multifamily where indicated by district tables; accessory uses per the residential chapter tables.
Key dimensional standards: consult Table 17.20‑2 for the specifics: minimum lot area (for example, R‑1 interior single‑family minimum 1 acre, R‑4 interior single‑family 5,000 sf), minimum lot widths, and maximum building height (30 ft., 2 stories across most R districts) and yard/setback rules (front yards often 30 ft. or variable per table) — see Table 17.20‑2 and SMC 17.20.040 for open space rules and lot coverage allowances .
Design review triggers here: new residential subdivisions of three or more units and multi‑lot developments (see § 17.450.010(A)(1–2)), and any substantial exterior changes to non‑single‑family/duplex districts as specified .
Small‑lot subdivision specifics: special small‑lot standards (lot size minimums, setbacks, 30‑ft height cap, max 65% lot coverage) apply under Chapter 17.230 and interact with design review (SMC 17.230.020–.070) .

Commercial / Office / Industrial — CO, CG, CD (Central Core), M, OLM, CM

Purpose / where it applies: commercial and mixed‑use corridors and nodes citywide; the CD district is the Central Core downtown district and has specific pedestrian/frontage expectations.
Typical permitted uses: retail, office, restaurants, light industrial per the use tables; some high‑intensity uses require Conditional Use Permits (see the use tables in Title 17) .
Key dimensional standards: Table 17.25‑2 summarizes the commercial/office/industrial development standards — examples: maximum building height ranges (e.g., 32 ft., 2 stories in CO/CG, 40 ft., 3 stories in CD, up to 50 ft. for certain residential projects with CUP), minimum lot area (often 6,000 sf), and front yard/setback specifics (some districts permit 0 ft front yard; others have specific curb‑setback rules) — consult Table 17.25‑2 for specifics .
Design review emphasis: building massing, pedestrian frontage, and transitions to adjacent residential districts; the Design Review Board often reviews signage and public‑facing treatments (see Signage chapter and Design Review cross‑references) .

Planned Community — PC

Purpose: allows an integrated, site‑specific development plan and policy statement; design review is required for all development proposals in a PC district and the development plan governs specific development standards (see § 17.40.010–.060) .
Typical permitted uses: set by the policy statement/development plan approved by City Council; expects clustering and creative design.
Design review role: the Design Review Board enforces the approved PC plan; minor modifications to an approved plan may be allowed by Design Review Board approval (see SMC 17.40.040–.060) .

Community Facilities — CF

Purpose: public, civic, parks, school, and related uses; development standards summarized in Table 17.30‑2 (e.g., maximum building height 32 ft., typical front/side/rear yard dimensions) .
Design review triggers: development in CF districts must still go through design review as part of development entitlement review, with buffering/screening when adjacent to residential zones (Table 17.30‑2) .

Open Space — OS

Purpose/uses: passive recreation, habitat, preservation; buildings are limited and most other uses require a CUP (see Chapter 17.32) .
Design review: major facilities or structures proposed in OS will be subject to design review and the stricter resource analyses in Chapters 17.44 (Wetlands) and 17.46 as applicable .

Wetlands / Combining Districts — W, WS, WF

Purpose: preserve environmental resources; applications in these combining districts require additional resource analysis, agency referrals, and may be routed to the Design Review Board for visual/scenic/tree issues (see § 17.44.040 and § 17.46.xxx chapters) .
Special expectations: vernal pool/rare plant surveys (SMC 17.44.050), multi‑agency comment and referral lists, and stricter criteria for conditional uses and design decisions .

Quick reference table — design‑review decision essentials

What the Board/Director evaluates	How it matters for permits	Code reference
Whether design is compatible with neighborhood character	Drives approval/denial and conditions	§ 17.450.030(B)(1)
Whether transitions to adjacent properties and right‑of‑way are appropriate	Influences setbacks, massing, landscaping conditions	§ 17.450.030(B)(2)
Required application materials (elevations, landscaping, parking, grading)	Application completeness and circulation to other review bodies	§ 17.450.020 and SMC 17.400.030
Delegation to Planning Director for minor alterations	Faster administrative approvals for small projects	§ 17.450.030(A)
Public notice/hearing rules & appeals	Determines whether hearing and what appeal path applies	Tables 17.400‑1/17.400‑2 and § 17.455.010–.020
District dimensional limits used in design review (setbacks, height, FAR)	Controls massing and required adjustments or exceptions	Table 17.20‑2 (Residential) and Table 17.25‑2 (Commercial)

Checklist

Applicants for Design Review in Sebastopol should prepare to satisfy the following (as required by SMC):

Submit a complete application per SMC 17.400.030 and pay required fees (verify current fee schedule)
Provide full architectural drawings showing all elevations and relationship to surrounding buildings (SMC § 17.450.020)
Show proposed landscaping, screening, and parking plans to applicable standards (refer to Table 17.110 and SMC parking chapter; see the Parking page)
Provide preliminary grading and drainage information if site work is proposed (§ 17.450.020)
Include resource reports (e.g., vernal pool/biological surveys) when in W/WS/WF areas (see § 17.44.050)
Prepare to show conformity with district development standards (Table 17.20‑2 for R‑ zones; Table 17.25‑2 for commercial/office)
If requesting delegation or administrative approval, include justification that the project is a “minor exterior alteration” per § 17.450.030(A)

Verify whether your project intersects any overlay district standards (e.g., Wetlands, Historic Preservation) — these may add studies, agency referrals, or separate approval paths (/us/california/sebastopol/overlay-districts and /us/california/sebastopol/historic-preservation).

Risks & Ambiguities

Issue	Why it matters	What to verify
When single‑family work needs design review	The code both exempts “single‑family or duplex districts” for some items and requires new single‑family homes in subdivisions of 3+ units to get design review — misreading can delay permits	Confirm whether the project is a “new single‑family residence in a subdivision of three or more units” or a simple single‑lot addition; cite § 17.450.010(A)(1–2)
Rooftop PV exemption	Rooftop PV is exempt unless Planning Director decides otherwise — unusual arrays may still be reviewed	Ask the Planning Department if the proposed PV is “unusual” per § 17.450.010(B)(1); verify submittal expectations
Overlays and environmental resource requirements	Projects in W/WS/WF or other overlays may trigger additional studies and agency referrals that lengthen review	Confirm overlay mapping and required reports (e.g., SMC 17.44.050 for vernal pool surveys)
Delegation vs. Board review	Whether a project goes to the Planning Director or full Board affects notice, timing, and appeal path	Confirm whether the proposal qualifies as a “minor exterior alteration” under § 17.450.030(A)
District tables vs. site‑specific PC plan	In PC districts the development plan controls — relying on base district tables will misstate requirements	For PC sites, use the PC policy statement and development plan; see § 17.40.050–.060
Interaction with other approvals (CUP, ADU rules, Variances)	Some projects require multiple entitlements and design review may be conditioned on other approvals	Confirm whether CUP/adjustment/variance paths are needed; see SMC Chapters 17.410–17.415 and check ADU rules (/us/california/sebastopol/adu)

Plain-English Summary

If you're building more than the smallest additions or building multiple homes, Sebastopol will check how your project looks and fits into the neighborhood through a Design Review permit; Title 17 lays out exactly what projects trigger review, what drawings you must submit, and the standards the Design Review Board (or Planning Director for small changes) will apply (see § 17.450.010–.030) .

Source References

Draft Title 17: Zoning Code, Chapter 17.450 Design Review Procedure — § 17.450.010, § 17.450.020, § 17.450.030, § 17.450.040
Draft Title 17: Zoning Code, Chapter 17.455 Appeal Procedure — § 17.455.010–.020
General procedures and application rules, Chapter 17.400 (application filing, notice, terms) — see SMC 17.400.030; § 17.400.090
Residential development standards: Table 17.20‑2 and SMC 17.20.040 (Open space standards) — Table 17.20‑2 (R‑1 through R‑7)
Commercial/Office/Industrial development standards: Table 17.25‑2 (CO, CG, CD, M, OLM, CM)
Planned Community district and policy statement requirements: Chapter 17.40, SMC 17.40.040–.060
Wetlands combining districts and resource analysis: Chapter 17.44 and related resource analysis chapters (SMC 17.44.040; 17.44.050)
Small‑lot subdivision standards (lot sizes, setbacks, parking): Chapter 17.230, SMC 17.230.020–.070
Signage and public art tie‑ins to design review: Chapter 17.120 (sign permits and Design Review Board authority) and Chapter 17.310 (public art)

If you need the exact wording of any of the cited sections above, consult the City’s adopted text of Title 17 (the file used to prepare this summary).

Sources

Retrieved passages

Sebastopol Zoning Code (Title 17) High relevance
Sebastopol Zoning Code (Title 17) High relevance
Sebastopol Zoning Code (Section 65858.) High relevance
Sebastopol Zoning Code (chapter provided) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance
Sebastopol Zoning Code (chapter shall) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance
CBC § R1 (Title 17) Medium relevance
Sebastopol Zoning Code (Chapter 17.320) Medium relevance
Sebastopol Zoning Code (Title 17) Medium relevance

Cited sections

Official Sebastopol code library

Frequently asked questions

Do I need design review in Sebastopol?

Short answer: Maybe. Design review is required for new residential developments of three or more contiguous lots/units, new single‑family homes in subdivisions of three or more units, and for proposed buildings or substantial exterior work that requires a building permit outside single‑family/duplex districts — see § 17.450.010 .

What does the Design Review Board look at?

They evaluate neighborhood compatibility, transitions to adjacent properties and rights‑of‑way, internal design harmony, and conformance with adopted guidelines; decisions reference the criteria in § 17.450.030(B)(1–5) .

What must my design review application include?

Per § 17.450.020, plan sets should include all elevations, relationship to surrounding buildings, proposed landscaping, building placement, off‑street parking layout, and preliminary grading as required; licensed designers must prepare drawings where state law requires .

Can the Planning Director approve design review applications?

Yes — the Design Review Board may delegate approval of minor exterior alterations to the Planning Director, and the Planning Director handles other delegated approvals identified in § 17.450.030(A) .

How do district standards affect design review?

Design review must show conformance with district development standards (e.g., setbacks, height, lot coverage). Use Table 17.20‑2 for R zones and Table 17.25‑2 for commercial/office/industrial standards when preparing materials for review .

Are rooftop solar panels subject to design review?

Rooftop photovoltaic systems are generally exempt from design review unless the Planning Director determines review is appropriate because of unusual installation or building characteristics (§ 17.450.010(B)(1)); verify with the Planning Department for atypical arrays .

What extra studies are sometimes required with design review?

If the site is in a Wetlands combining district or otherwise environmentally sensitive, vernal pool/rare plant surveys and multi‑agency referrals may be required under SMC 17.44.040–.050; Title 17 directs when those analyses must be supplied and routed to Planning and the Design Review Board .

How long does a design review approval last?

Zoning and discretionary approvals expire if not exercised within three years from the date of approval; conditions and adherence to approved plans are required; see § 17.400.090 for the term and revocation rules .

Will signage and public art be part of design review?

Yes — the Sign Regulations (Chapter 17.120) and public art requirements (Chapter 17.310) tie into design review. The Design Review Board reviews or approves sign permits and may require public art for projects in commercial/industrial districts (17.120.x and 17.310.x) .

If I disagree with a Planning Director decision on design review, can I appeal?

Yes — the appeal paths for administrative or board-level design review determinations are set out in the appeals chapter; appeals from administrative determinations related to design review can go to the Planning Commission or Design Review Board as specified (see § 17.455.010–.020)

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