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Ukiah — Zoning

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

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Last reviewed: July 6, 2026

Overview

Ukiah’s zoning rules live in Chapter 2 of the Ukiah City Code and implement the General Plan through mapped districts, combining “-overlay” districts, and a Downtown Zoning Code that supersedes the base rules downtown when there’s a conflict. The Official Zoning Map is adopted by reference, and district boundaries/interpretation rules govern how lot lines and streets determine where a zone applies. See the adoption of districts and map in § 9008 and § 9009 .

The Downtown Zoning Code establishes three special zones — General Urban (GU), Urban Center (UC), and Downtown Core (DC) — and if its standards conflict with the citywide zoning ordinance, the downtown rules control (§ 9221.2, § 9222).

Use the Ukiah Zoning page alongside related topics like Ukiah Land Use, Ukiah Development Standards, Ukiah Parking, Ukiah Design Review, Ukiah Overlay Districts, and Ukiah ADUs. Questions about exceptions or relief route through Ukiah Variances and Exceptions. Construction requirements are governed separately by the California Building Standards Code.

District-by-district standards and guidance

R-1 — Low Density Residential

  • Purpose: Preserve and protect neighborhood residential character; typical subdivision lots 4,500–10,000 sq ft (§ 9015).
  • Typical allowed uses: Single-family homes, duplexes, ADUs/JADUs, community gardens; certain civic/institutional uses by permit (§ 9016, § 9017).
  • Dimensional highlights:
    • Min site area: 4,500 sq ft interior; 6,000 sq ft corner (§ 9019).
    • Setbacks: 10 ft front, 5 ft sides, 10 ft rear for residences; accessory buildings 5 ft rear, 5 ft sides (§ 9020).
    • Height: 30 ft main, 20 ft accessory; ADU height per ADU article (§ 9018; § 9056.6).
  • Where it applies: Mapped widely across Ukiah’s single-family neighborhoods (§ 9009).

R-2 — Medium Density Residential

  • Purpose: Not stated in retrieved materials for § 9030-series (use intent inferred by district name). Not found in retrieved materials.
  • Typical allowed uses: Multiple-family by right when meeting city multifamily design standards; supportive/transitional housing consistent with use type (§ 9033–§ 9035 references and related allowances).
  • Dimensional highlights:
    • Site area: None required (§ 9034).
    • Setbacks: 10 ft front, 5 ft sides, 10 ft rear; both streets front on corners (§ 9035).
    • Height: 35 ft main; 20 ft accessory or main height if less (§ 9033).
  • Where it applies: Medium-density corridors and areas designated for duplexes/multifamily (§ 9009).

R-3 — High Density Residential

  • Purpose: Transition between residential and commercial areas with emphasis on higher-density housing (§ 9045).
  • Typical allowed uses: Multifamily (triplexes, fourplexes, apartments, SROs) by right when meeting multifamily standards; single-family; ADUs/JADUs; supportive/transitional housing (§ 9046).
  • Dimensional highlights:
    • Site area: None required (§ 9049).
    • Setbacks: 10 ft front, 5 ft sides, 10 ft rear; both streets front on corners (§ 9050).
    • Height: 50 ft main, but limited to 35 ft when abutting R-1 or R-2; 30 ft accessory (§ 9048).
  • Where it applies: High-density housing areas designated in the General Plan (§ 9009; § 9045).

C-N — Neighborhood Commercial

  • Purpose: Low-intensity commercial integrated with housing; excludes large-format retail and highway-serving uses (§ 9060).
  • Typical allowed uses: Small retail, personal services, professional/medical offices, single- and multifamily housing by right when meeting standards; outdoor dining; ADUs/JADUs (§ 9061).
  • Selected permitted-by-use-permit: Retail not listed in § 9061, sit-down restaurants, schools, certain multifamily not meeting by-right standards, cannabis retailer (§ 9062).
  • Dimensional highlights:
    • Site area: Commercial 7,000 sq ft min; none for residential/mixed (§ 9064).
    • Setbacks: 10 ft front (second story 15 ft); 5 ft sides; 10 ft rear (§ 9065, § 9066).
    • Height: 35 ft main; 20 ft accessory (§ 9063).
  • Where it applies: Small-scale commercial nodes in or near neighborhoods (§ 9009).

C-1 — Community Commercial

  • Purpose: Broader commercial along primary corridors; allows mixed-use and multifamily by right if standards met (§ 9080).
  • Typical allowed uses: Retail, offices, restaurants, hotels/motels, schools, and multifamily by right when meeting standards (§ 9081).
  • Selected permitted-by-use-permit: Auto services/sales, cannabis manufacturers/retailers, theaters (§ 9082).
  • Dimensional highlights:
    • Site area: Commercial 6,000 sq ft interior/7,000 sq ft corner; none for residential/mixed; mobile home parks 2 acres (§ 9084).
    • Setbacks: 5 ft front; sides/rear none unless abutting R districts (match adjoining yards) (§ 9085).
    • Height: 50 ft (§ 9083).
  • Where it applies: Major commercial corridors and the Downtown Parking District interface (§ 9086.B).

C-2 — Heavy Commercial

  • Purpose: Accommodate service/wholesale/auto-oriented uses and multifamily integration (§ 9095).
  • Typical allowed uses: Equipment repair, construction sales/service, mini-storage, auto sales and service, warehousing, wholesale; multifamily by right when meeting standards (§ 9096).
  • Selected permitted-by-use-permit: Cannabis businesses (various license types) and related industrial/commercial intensities (§ 9097).
  • Dimensional highlights:
    • Setbacks: 5 ft front; sides/rear none unless abutting R districts (match adjoining yards) (§ 9099).
    • Height: 50 ft primary; 30 ft accessory (§ 9098).
  • Where it applies: Heavier commercial/industrial corridors and districts (§ 9009).

M — Manufacturing

  • Purpose: Implement General Plan policies for industrial areas (§ 9110).
  • Typical allowed uses: Light/heavy industrial and storage uses; outdoor sales/display; accessory uses (§ 9111).
  • Permitted-by-use-permit: A wide range including cannabis cultivation/processing, labs, hotels/motels as listed (§ 9112).
  • Dimensional highlights:
    • Site area: 7,000 sq ft min (§ 9114).
    • Setbacks: None on interior fronts; 10 ft along each street frontage at corners; other yards by code (§ 9115).
    • Height: 50 ft max (§ 9113).
  • Where it applies: Industrially designated lands citywide (§ 9009).

A‑E — Agricultural Exclusive

  • Purpose: Preserve limited agricultural soils and agricultural operations (§ 9160.A).
  • Typical allowed uses: Agricultural production/processing, farm stands; residential accessory uses including ADUs; employee housing (§ 9160.C).
  • Dimensional highlights (selected): Standards for lot size and setbacks appear in the district article; Not found in retrieved materials beyond general allowances. Not found in retrieved materials.
  • Where it applies: Mapped lands preserved for agriculture (§ 9009).

-A — Combining Agricultural

  • Purpose: Allow specified agricultural/rural activities in combination with an underlying zone where parcels are typically 5+ acres (§ 9127).
  • Typical uses with minor use permit: General animal raising, kennels/stables, large-animal veterinary, employee housing, mixed-light cannabis cultivation types; property must be at least 5 acres (§ 9127).
  • Where it applies: As a combining overlay with any base district (§ 9008 list).

-H — Hillside Combining District

  • Purpose: Promote fire/geologic safety and preserve hillside aesthetics; applies as a combining overlay to any base district (§ 9135).
  • Key development standards (selected):
    • Yard/setback: 30 ft from all property lines and 30 ft from ridge top/toe of slope where gradients exceed 15% (hillside standards) (§ 9139 excerpt).
    • Materials/water supply: Non-combustible roofing; specified fire-flow and hydrant spacing based on slope (§ 9139 excerpt).
  • Where it applies: Designated hillside areas mapped by the City (§ 9135).

PF — Public Facilities

  • Typical allowed/permit uses: Broad set of civic, utility, educational, parks, fairground and quasi-public facilities (§ 9170.2 and related lists).
  • Dimensional highlights:
    • Height: Airports — per airport regulations; Parks/Schools — generally 30 ft; Utilities/Public Safety — 40 ft (transmission towers not limited) (§ 9170.3).
    • Site area: None required (§ 9170.4).
    • Setbacks: Not fixed; established via conditions, and “equal to or greater” than adjacent districts (§ 9170.5).
  • Where it applies: Public ownership/use sites including the airport (§ 9170.3).

PD — Planned Development Combining Zone

  • Purpose: Flexible, phased development that can deviate from standardized zoning to promote quality planning (§ 9165).
  • How it works:
    • Can combine with any zoning district (§ 9166.A).
    • Minimum area: Generally 0.5 acre; may be smaller downtown if certain walkability/amenity criteria are met (§ 9167.B).
    • Approval adopts a concept or precise plan into the PD district; PDs expire if not built within timelines (§ 9168, § 9169).
  • Where it applies: Case-by-case wherever Council establishes a PD; shown on the map with “PD” (§ 9168).

Downtown Zoning Code — GU, UC, DC

  • Relationship: Downtown rules apply within the Downtown Zoning Code (DZC) boundary and override conflicting citywide standards (§ 9221.2).
  • Districts (§ 9222):
    • GU (General Urban) — mixed-use and urban residential in varied building types.
    • UC (Urban Center) — higher-density residential and mixed-use with buildings close to frontages.
    • DC (Downtown Core) — highest-intensity, storefront-oriented core.
  • Uses and permits: Allowed, Minor Use Permit, and Major Use Permit are designated by DZC Table 3 (§ 9223). Not found in retrieved materials for the full table contents.
  • Dimensional highlights:
    • Principal building standards: Determined by DZC Table 6; height measured by stories (each story up to 14 ft clear) (§ 9225.4). Specific max story counts not found in retrieved materials.
    • Setbacks: Determined by DZC Table 6 and Figures 3A–3C (§ 9225.5). Not found in retrieved materials for numeric setbacks.
    • Accessory buildings (Table 7): In GU/UC, front setback 30 ft; side 0 ft; rear 3 ft (or 14 ft from alley centerline); max 2 stories and cannot exceed main building height; in DC accessory buildings are prohibited (§ 9225.3/Table 7).
  • Where it applies: Parcels inside the DZC Zoning Map boundary (§ 9221.1.A; § 9222.1).

Quick-reference standards table

District Key dimensional/allowance Code Reference
R-1 Min lot: 4,500 sf interior / 6,000 sf corner; Setbacks: 10 ft front, 5 ft sides, 10 ft rear (residences); Height: 30 ft main, 20 ft accessory § 9019; § 9020; § 9018
R-2 No min site area; Setbacks: 10/5/10; Height: 35 ft main, 20 ft accessory § 9034; § 9035; § 9033
R-3 No min site area; Setbacks: 10/5/10; Height: 50 ft (35 ft when abutting R-1/R-2) § 9049; § 9050; § 9048
C-N Site area: 7,000 sf commercial; Setbacks: 10 ft front (15 ft story 2), 5 ft sides, 10 ft rear; Height: 35 ft main § 9064; § 9065–§ 9066; § 9063
C-1 Site area: 6,000 sf interior / 7,000 sf corner (commercial); Setbacks: 5 ft front; sides/rear none unless next to R; Height: 50 ft § 9084; § 9085; § 9083
C-2 Setbacks: 5 ft front; sides/rear none unless next to R; Height: 50 ft main, 30 ft accessory § 9099; § 9098
M Min site area: 7,000 sf; Corner-front yard 10 ft; Height: 50 ft § 9114; § 9115; § 9113
PF Setbacks: set by conditions, ≥ adjacent districts; Site area: none; Height: 30–40 ft by facility; airport varies § 9170.5; § 9170.4; § 9170.3
A‑E Agriculture-focused district; residential accessory uses incl. ADUs allowed § 9160
–A Combining Agricultural overlay; MU permit uses; min 5 acres § 9127
–H Hillside overlay; min 30 ft setbacks in high-slope areas; special fire/water standards § 9139 (excerpt)
GU/UC/DC (DZC) Principal standards in DZC Table 6; Accessory bldgs: GU/UC front 30 ft; DC prohibits accessory bldgs § 9225.4–§ 9225.5; Table 7 (§ 9225.3)

Notes:

  • ADUs/JADUs are allowed where residential uses are allowed; see Ukiah ADUs. Height and siting rules for ADUs are set in the ADU article, not the base districts (§ 9056 et seq.).
  • Citywide exceptions and “average setback” rules can modify front yards in built-out blocks (§ 9020; § 9035; § 9050).

Checklist

  • Confirm your parcel’s zoning and any combining overlays on the Official Zoning Map (§ 9009).
  • Identify whether you are inside the Downtown Zoning Code boundary (GU/UC/DC) — if so, downtown rules control (§ 9221.2; § 9222).
  • Verify allowed use or permit type in your district; if use isn’t listed, the Planning Director may determine “similar use” per code (§ 9069 for C‑N; § 9088 for C‑1; DZC § 9223.C).
  • Check dimensional standards (lot size, height, yards) for your district (e.g., § 9020 R‑1; § 9035 R‑2; § 9050 R‑3; § 9085 C‑1).
  • If proposing multifamily or mixed-use, confirm any by-right provisions tied to multifamily design standards and whether design review applies (§ 9046; § 9081; C‑2 § 9096).
  • Evaluate parking requirements in Article 17 or special downtown parking rules (§ 9086.B for C‑1).
  • For hillside or agricultural areas, apply overlay standards (-H, -A) in addition to base zoning (§ 9135; § 9127).
  • If your project needs flexibility, consider a PD combining zone path and required plans (§ 9165–§ 9168).

Risks & Ambiguities

Issue Why it matters What to verify
Downtown vs. citywide standards The DZC overrides base zoning where in conflict; standards and allowed uses differ (§ 9221.2) Whether your parcel is within GU/UC/DC and which DZC tables apply; confirm any missing numeric standards in DZC Table 6.
“Average setback” rule Built-out blocks can alter the usual front setback in R and C‑N/R‑3 districts (§ 9020; § 9035; § 9050) Whether 50%+ of your block face is built out, triggering averaged setbacks.
Abutting residential C‑1/C‑2 side/rear yards default to the R district next door (§ 9085; § 9099) If adjacent to R‑1/R‑2/R‑3, confirm yard depths equal to the neighbor’s standard.
Overlay stacking -H or -A can add/modify setbacks and allowed uses on top of base district (§ 9135; § 9127) Which overlays apply to your lot and how they interact with base zoning.
Airport limits Building heights may be overridden by airport compatibility plans (§ 9004; DZC § 9225.4 notes) If near the airport, apply the stricter height/compatibility standard.
Use not listed Director may classify similar uses; appeal paths exist (§ 9069; § 9088; DZC § 9223.C) Whether your use can be treated as “similar,” and if a permit is required.
PD combining timing PDs expire if not built; minimum area rules vary downtown (§ 9167.B; § 9169) Submittal timing, phasing, and whether you qualify for reduced PD acreage.

Plain-English Summary

Ukiah assigns every parcel to a zoning district that sets what you can build and how big/tall it can be. Neighborhoods like R‑1 have simple rules for yards and heights; corridors like C‑1/C‑2 fit shops, services, and often apartments; and the Downtown (GU/UC/DC) follows its own map and rules. Overlays like -H (Hillside) and -A (Combining Agricultural) can add extra setbacks or uses on top. When in doubt about uses, parking, or design details, start with your district’s sections and then check related pages like Ukiah Development Standards, Ukiah Parking, and Ukiah Design Review.

Source References

  • Establishment of districts and Zoning Map adoption: § 9008; § 9009
  • Airport compatibility statement: § 9004
  • R-1: § 9015–§ 9023 (purpose, uses, height, site area, setbacks)
  • R-2: § 9033–§ 9036 (height, site area, setbacks; parking)
  • R-3: § 9045–§ 9053 (purpose, uses, height, site area, setbacks)
  • C-N: § 9060–§ 9069 (purpose, uses, site area, setbacks, height)
  • C-1: § 9080–§ 9088 (purpose, uses, site area, setbacks, height; downtown parking district)
  • C-2: § 9095–§ 9102 (purpose, uses, setbacks, height)
  • M: § 9110–§ 9116 (purpose, uses, site area, yards, height)
  • A‑E: § 9160 (purpose; uses)
  • -A Combining: § 9127 (overlay uses; 5-acre minimum)
  • -H Hillside: § 9135–§ 9139 (purpose; hillside standards excerpt)
  • PF: § 9170.3–§ 9170.6 (height; site area; setbacks; parking)
  • PD Combining: § 9165–§ 9169 (purpose; application; procedures; action; expiration)
  • Downtown Zoning Code: § 9221–§ 9226 (relationship; zones; uses/permits; standards)

Sources

Retrieved passages

  • Ukiah Zoning Code (section 9226) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§2) High relevance
  • Ukiah Zoning Code (§9006) High relevance
  • Ukiah Zoning Code (§5) High relevance
  • CBC § 5 (§5) High relevance
  • Ukiah Zoning Code High relevance
  • Ukiah Zoning Code (§2) High relevance
  • Ukiah Zoning Code (§9003) High relevance
  • Ukiah Zoning Code (Article 20) High relevance
  • Ukiah Zoning Code (§2) High relevance
  • Ukiah Zoning Code (section 9231) High relevance
  • Ukiah Zoning Code (§2) High relevance
  • Ukiah Zoning Code (§5) High relevance
  • Ukiah Zoning Code (section 9087) High relevance
  • Ukiah Zoning Code (CHAPTER 2) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§9069) High relevance
  • Ukiah Zoning Code (section 9087) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (Chapter 2) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§1) High relevance
  • Ukiah Zoning Code (§2) High relevance

Cited sections

  • Establishment of districts and Zoning Map adoption: § 9008; § 9009 (§ 9008)
  • Airport compatibility statement: § 9004 (§ 9004)
  • R-1: § 9015–§ 9023 (purpose, uses, height, site area, setbacks) (§ 9015)
  • R-2: § 9033–§ 9036 (height, site area, setbacks; parking) (§ 9033)
  • R-3: § 9045–§ 9053 (purpose, uses, height, site area, setbacks) (§ 9045)
  • C-N: § 9060–§ 9069 (purpose, uses, site area, setbacks, height) (§ 9060)
  • C-1: § 9080–§ 9088 (purpose, uses, site area, setbacks, height; downtown parking district) (§ 9080)
  • C-2: § 9095–§ 9102 (purpose, uses, setbacks, height) (§ 9095)
  • M: § 9110–§ 9116 (purpose, uses, site area, yards, height) (§ 9110)
  • A‑E: § 9160 (purpose; uses) (§ 9160)
  • -A Combining: § 9127 (overlay uses; 5-acre minimum) (§ 9127)
  • -H Hillside: § 9135–§ 9139 (purpose; hillside standards excerpt) (§ 9135)
  • PF: § 9170.3–§ 9170.6 (height; site area; setbacks; parking) (§ 9170.3)
  • PD Combining: § 9165–§ 9169 (purpose; application; procedures; action; expiration) (§ 9165)
  • Downtown Zoning Code: § 9221–§ 9226 (relationship; zones; uses/permits; standards) (§ 9221)
  • Ukiah_ZoningCode.md

Frequently asked questions

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

R-1 allows single-family homes, duplexes, and accessory structures, with ADUs/JADUs permitted under the city’s ADU articles. Typical setbacks are 10 ft front, 5 ft sides, 10 ft rear (residences), with interior lots at 4,500 sq ft minimum (§ 9016; § 9019; § 9020).

What are Ukiah’s basic residential setbacks in R-2 and R-3?

Both R-2 and R-3 require 10 ft front, 5 ft sides, and 10 ft rear yards, with both streets treated as front on corners. R‑3 also has an “average setback” provision on built-out block faces (§ 9035; § 9050).

Do I need a yard setback in C-1 or C-2 if my lot backs up to homes?

Yes. In both C‑1 and C‑2, sides/rear normally have no setback, but if the lot abuts an R‑1/R‑2/R‑3 district, your yard must match the adjoining residential standard (§ 9085; § 9099).

How are downtown (GU/UC/DC) building heights measured?

By stories, not feet, with each story up to 14 ft clear under the Downtown Zoning Code. Specific max story counts and principal building standards are in DZC Table 6 (not retrieved here) (§ 9225.4). Verify with the jurisdiction.

Can I add an accessory building behind a downtown property?

In GU and UC, accessory buildings are allowed with standards (e.g., 30 ft front setback; 0 ft side; 3 ft rear). In DC, accessory buildings are prohibited (DZC Table 7; § 9225.3).

What is the PD (Planned Development) combining zone used for?

It allows flexible, high-quality projects that deviate from standard zoning when adopted by the City Council, often with a concept/precise plan. PDs can overlay any district and generally require 0.5 acre, with some downtown exceptions (§ 9165–§ 9167).

How does the Hillside (-H) overlay change my setbacks?

In designated hillside areas, expect larger clearances — often 30 ft from property lines and ridge/toe of slope — plus stricter fire-flow, hydrant spacing, and materials standards (§ 9139 excerpt).

Are multifamily units allowed in commercial districts?

Yes. C‑1 and C‑2 allow multifamily by right when projects meet the city’s multifamily design/development standards; others may require discretionary review (§ 9081; § 9096).

How do I know if a not-listed use can locate in my zone?

The Planning Director can determine if a use is “similar” and either allowed or permit-eligible, with appeal rights (e.g., C‑N § 9069, C‑1 § 9088, DZC § 9223.C).

Do airport height limits override zoning heights?

Yes. Where applicable, airport land use compatibility plans control, and the DZC reiterates that airport height restrictions may supersede its standards (§ 9004; § 9225.4).

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