Local zoning · Del Norte County

Del Norte County — Zoning

Q: Do commercial districts allow housing?

Yes, in some cases. In C‑2 , multiple dwellings are allowed with a use permit and must meet R‑3 standards; transitional/supportive housing and SROs are also listed (§ 20.28.30). In C‑3 , multiple dwellings may be permitted and R‑3 dimensional standards may apply (§ 20.29.30).

Zoning under the Del Norte County local zoning and planning code, with the controlling citations.

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Last reviewed: July 6, 2026

Overview

This page explains how zoning works in unincorporated areas of Del Norte County under the county’s zoning titles: inland zoning (Title 20) and the coastal zoning program (Title 21). Title 20 and Title 21 establish the county’s base zoning districts and combining/overlay districts, dimensional rules (setbacks, heights, lot sizes), and how to read the county zoning maps that govern what you can build and where. All standards below apply only to unincorporated Del Norte County; incorporated cities (e.g., Crescent City) have separate codes.

In unincorporated Del Norte County, parcels inside the California Coastal Zone follow Title 21 (coastal zoning); parcels inland follow Title 20. When uncertainty exists about a mapped boundary, the Planning Commission decides the line using the official zoning maps on file. See § 21.02.20, § 21.06.20–.50, and § 21.06.30; maps are on file in the Planning Director’s office (§ 20.06.50; § 21.06.50).

Link to related topics you may also need: the county’s zoning & planning overview, Land Use, Development Standards, Parking, Design Review, Overlay Districts, Nonconforming Uses, and state California ADU law.

How Del Norte’s Zoning Is Organized (Titles, Maps, and Applicability)

Title 20 (Zoning) governs unincorporated inland areas. It establishes districts, general provisions, and where official maps are kept (§ 20.06.50; § 20.48.10).
Title 21 (Coastal Zoning) is the county’s certified Local Coastal Program, applicable in the Coastal Zone; it adopts districts, map procedures, and boundary rules (§ 21.02.10–.50; § 21.06.20–.50).
Where the California Coastal Commission retains coastal permit jurisdiction, the county’s zoning still applies, but a county approval does not serve as a coastal permit; county processing follows non-coastal procedures (§ 21.20.20(3)).
In both titles, “general provisions” apply countywide, including special uses allowed anywhere by use permit (e.g., public/quasi-public utilities, temporary batch plants, certain signs) and special lot-size rules (§ 20.48.20; § 20.48.80; § 21.46.20; § 21.46.80).
In coastal districts, development must conform to the specific district’s permitted uses and standards; no use may occur unless listed as permitted in that district (§ 21.06.40).

Coastal Zoning District Index (Title 21)

Title 21 establishes the full set of coastal base and combining districts for unincorporated areas in the Coastal Zone, including: AE, A, AI, RCA1, RCA2, TPZ, CT, RR-1, RRA, R-1, MHP, R-2, R-3, PC, C-1, C-2, C-3, C-R, C-4, M, MP, PF, and combining/overlay districts B, C, D, FP1, FP2, FP3, MH-1, MH-2, and W (§ 21.06; district table).

District-by-District Guide (Unincorporated Areas)

PO Public Ownership (Title 20)

Purpose: Recognizes state/federal public lands and the county’s role in decisions affecting them (§ 20.08.5).
Typical permitted uses: Agency-authorized uses in state parks, national parks/forests; a single-family dwelling; home occupations; guest ranches/stables; logging; animal husbandry; ADUs/JADUs (§ 20.08.10).
Uses with use permit (on private land): Mobilehome in lieu of conventional unit; mobilehome parks; mining; RV parks; country clubs; produce stands (§ 20.08.20).
Key dimensional standards: Not found in retrieved materials. Verify with the jurisdiction.

R-1 One-Family Residence (Title 20)

Typical permitted uses: Not found in retrieved materials. Verify with the jurisdiction.
Uses with use permit: Public uses; home occupations; one noncommercial guest house; limited animal husbandry by lot area; guest lodging (§ 20.17.20).
Key dimensional standards: Height 35 ft (§ 20.17.30); min lot area ≥ 1 acre (§ 20.17.40); min lot width 100 ft (§ 20.17.50); lot coverage 20% (§ 20.17.60); front 25 ft (§ 20.17.70); side 10 ft or 10% of width, min 5 ft (§ 20.17.80); rear 20 ft main, 5 ft accessory (§ 20.17.90).

R-2 Low Density Multiple-Family (Title 20 and Coastal Title 21)

Purpose: Applied where services support duplexes (§ 20.18.10; § 21.21.10).
Principal permitted use: One single- or one two-family residence per site; accessory buildings/uses (§ 20.18.20; § 21.21.20).
Uses with use permit: Home occupations (coastal: per § 21.40.330) (§ 21.21.30).
Key dimensional standards: Min lot width 60 ft and max 3:1 length:width (§ 20.18.60); lot coverage 35% (§ 20.18.70); yards—front 25 ft, sides 5 ft, rear 20 ft main/5 ft accessory (§ 20.18.80); height and minimum lot area: Not found in retrieved materials.

R-3 High Density Multiple-Family (Title 20)

Purpose: High-density urban-type living where public water/sewer and roads are available (§ 20.20.10).
Permitted uses: All R-1/R-2 permitted uses (with any required use permits), multiple dwellings/dwelling groups, ADUs/JADUs, child day care homes (≤14 children), transitional/supportive housing, SROs, small community care facilities (≤6), mobilehome parks, accessory uses (§ 20.20.20).
Key dimensional standards: Not found in retrieved materials.

MHP Mobilehome Park District (Title 20 and Coastal Title 21)

Principal permitted use: Mobilehome park (coastal MHP chapter); home occupations inside a park require a use permit (§ 21.20.30).
Minimum project area: 1 acre (§ 21.20.40; inland counterpart § 20.20B.40).
Additional inland standards: Overall density ≤ 2 du/acre (inland MHP) and Planning Commission review of plans before construction permits (§ 20.20B.40–.50).

FR-1 Forest and Recreation (Title 20)

Purpose: Apply to areas best suited for recreation; protect recreational/forest resources (§ 20.35.10).
Permitted uses: Single-family dwelling; ADUs/JADUs; agricultural employee housing; child day care (≤14 children); vacation cottages; hunting/fishing camps; guest ranches and stables; pack stations; logging; country clubs/golf; home occupations; agriculture; other similar resource-compatible uses (§ 20.35.20).
Key dimensional standards: Not found in retrieved materials.

FR-2 Forest–Recreation (Title 20)

Intent; Applicability: Transition near state/federal park and forest lands, emphasizing conservation/recreation (§ 20.34.5).
Permitted uses: Single-family dwelling; ADUs/JADUs; child day care (≤14); hunting/fishing camps; pack stations; home occupations; agriculture; employee housing (per State Employee Housing Act); 1 guest cottage with a residence (§ 20.34.10).
Key dimensional standards: Height 35 ft (§ 20.34.40); minimum lot area ≥ 2 acres (§ 20.34.40); front 40 ft (§ 20.34.50); side 15 ft (§ 20.34.60); rear 50 ft main/30 ft accessory (§ 20.34.70); lot coverage 20% (§ 20.34.80).

C-R Commercial Recreation (Title 20)

Purpose: Visitor-serving commercial recreation on private lands (e.g., RV parks, resorts), designed to enhance public recreation (§ 20.23.10).
Permitted uses: Outdoor recreation on sites ≥5 acres (e.g., RV parks, riding academies, hunting/fishing resorts); one single-family dwelling for owner/operator; ADUs/JADUs; small community care facilities (§ 20.23.20).
Key dimensional standards: Not found in retrieved materials.

C-2 Light Commercial (Title 20)

Purpose: Applied to areas developed like a central shopping area serving high-density urban neighborhoods (§ 20.28.10).
Permitted uses: Hotels/motels; hospitals/clinics; retail stores; offices; garages; auto/boat sales yards; commercial recreation; restaurants; theaters; department stores and regional shopping centers; and accessory uses; also ADUs/JADUs and Low-Barrier Navigation Centers (§ 20.28.20).
Uses with use permit: Public/quasi-public uses; multiple dwellings (built to R-3 standards); transitional/supportive housing; SRO; small employee housing (§ 20.28.30).
Key dimensional standards: Height 45 ft (§ 20.28.40). Other dimensional standards: Not found in retrieved materials.

C-3 Central Business District (Title 20)

Uses with use permit: Public/quasi-public uses; animal hospitals and enclosed kennels; contractor/lumber/storage yards; mobilehome park; multiple dwellings (to R-3 standards); limited single-family or mobile/manufactured home in some cases; small employee housing (§ 20.29.30).
Key dimensional standards: Height 45 ft (§ 20.29.40); min lot area none where public/mutual water and sewer are available; otherwise 12,000 sq ft (§ 20.29.50); min lot width 25 ft (§ 20.29.60); lot coverage up to 100% with public/mutual water and sewer (§ 20.29.70).
Note: Chapter includes site-specific allowances for certain APNs and Low-Barrier Navigation Centers; verify parcel details (§ 20.29.20, as amended).

Coastal AE Agriculture Exclusive (Title 21)

Intent; applicability: Protect prime agricultural land and uses from encroachment (§ 21.08.10).
Principal permitted/use-permit lists and dimensional standards: Not found in retrieved materials.

Manufactured Housing (MH) Combining Overlay (Title 21)

Intent/applicability: Allows manufactured homes as part of a dwelling mix in acceptable areas; minimum overlay area 5 acres (rural) or one city block (urban); applies to RR and R zones (excluding duplex/multifamily) (§ 21.40.10–.20).
Uses/regulations: Same as principal district; one independent manufactured home allowed in lieu of a conventional unit; foundation/skirting/entry standards apply (§ 21.40.30–.40).

Flood Hazard Combining Overlays (Title 21)

FP1 Flood Zone Area: Requires a use permit; buildings must be flood-resistant and not obstruct flows (§ 21.37.10–.20).
FP3 Protected Areas Within Flood Zones: Applies where levees/dikes protect a flood zone; no special requirements beyond the base zone (§ 21.39.10–.20).

Coastal “D” Development/Density Overlay (Title 21)

Density control overlay used with subdivisions; average surrounding parcel size analysis; overall project density may not exceed General Plan; lot building-site areas must be shown on the final map; certification of the D overlay rezone by the Coastal Commission is required before county map approval (§ D overlay provisions).

General Provisions You’ll See Cited Across Districts

Countywide use-permit-only uses in any district include public/quasi-public facilities, public parking lots, temporary batch plants, certain signs, and temporary real estate sales offices (Titles 20 and 21 general provisions) (§ 20.48.20; § 21.46.20).
Special lot-size rules for legal nonstandard lots and parcel creation; roadway access permit requirements off maintained roads (§ 20.48.80; § 21.46.80).
Fence and height exceptions may require a use permit; coastal title also caps fence heights in yards (§ 21.46.70; Title 20 parallels in § 20.48.70) — check your title.
Agricultural buffers: New discretionary development next to “agricultural lands” must provide at least a 100‑foot buffer; the County may adjust based on site-specific conditions (§ 20.48.95).

Selected Standards and Uses (quick reference)

District	Typical Permitted Uses (examples)	Key Dimensional Standards	Code Reference
R-1 One-Family Residence (Title 20)	Single-family (implied); guest house, limited animal husbandry by use permit	Height 35 ft; Min lot ≥1 ac; Width 100 ft; Coverage 20%; Front 25 ft; Side 10 ft or 10% (min 5 ft); Rear 20/5 ft	§ 20.17.20, § 20.17.30–.90
R-2 Low Density Multiple-Family (Titles 20/21)	One single-family or one duplex; accessory uses	Width 60 ft; Coverage 35%; Front 25 ft; Side 5 ft; Rear 20/5 ft; Height & Min lot area: Not found	§ 20.18.20, § 20.18.60–.80; § 21.21.20
R-3 High Density Multiple-Family (Title 20)	R-1/R-2 uses; multiple dwellings; ADUs/JADUs; transitional/supportive housing; SRO; small care facilities	Not found in retrieved materials	§ 20.20.10–.20
FR-2 Forest–Recreation (Title 20)	Single-family; ADUs/JADUs; camps; pack stations; agriculture; employee housing limits	Height 35 ft; Min lot ≥2 ac; Front 40 ft; Side 15 ft; Rear 50/30 ft; Coverage 20%	§ 20.34.5, § 20.34.10, § 20.34.40–.80
C-3 Central Business District (Title 20)	Public/quasi-public; contractor/yard uses; multiple dwellings by UP; mobilehome park	Height 45 ft; Min lot none w/ utilities, else 12,000 sf; Width 25 ft; Coverage up to 100% (w/ utilities)	§ 20.29.30–.70
MHP Mobilehome Park (Titles 20/21)	Mobilehome park; home occupations in units by UP	Min project area 1 ac; inland density ≤2 du/ac; PC review of plans before permits	§ 21.20.30–.50; § 20.20B.40–.50

Where a dimensional standard is “Not found,” consult county staff and the official maps and titles; do not assume carryover from nearby districts. Verify with the jurisdiction.

Checklist

Confirm the parcel is in unincorporated Del Norte County and identify whether it lies inside the Coastal Zone (Title 21) or inland (Title 20). See the official zoning maps on file (§ 20.06.50; § 21.06.50).
Identify the base zoning district and any combining/overlay districts (e.g., FP1, FP3, MH). Review coastal district lists if applicable (§ 21.06.20–.40).
Check district purpose, principal permitted uses, and any use-permit options; in coastal areas, only uses listed as permitted may occur (§ 21.06.40).
Confirm setbacks, height, lot size, coverage, and frontage against district standards and the general provisions (§ 20.48; § 21.46).
If near agriculture, apply required agricultural buffers (§ 20.48.95).
Verify whether your project triggers Parking, Design Review, Overlay Districts, or Nonconforming Uses considerations, and whether a use permit is available under general provisions (§ 20.48.20; § 21.46.20).
If adding an accessory dwelling, confirm local allowances and state rules under California ADU law; many districts expressly allow ADUs/JADUs. See examples: § 20.08.10; § 20.34.10; § 20.20.20; § 20.23.20; § 20.35.20.
For coastal subdivisions or rezonings that use the D overlay, ensure consistency with average parcel-size rules and obtain Coastal Commission certification before county map approval (§ D overlay).

Risks & Ambiguities

Issue	Why it matters	What to verify
Coastal vs. inland title	The standards and permitted uses can differ between Title 20 and Title 21	Whether the parcel is within the Coastal Zone and which title/districts apply (§ 21.02.20; § 21.06.20–.50)
Boundary uncertainty on maps	Property lines near zone boundaries can affect allowed uses	Planning Commission determination of map boundaries (§ 21.06.30) and viewing the official maps (§ 20.06.50; § 21.06.50)
Substandard or historic lots	Some small/old lots may still be legal sites	Special lot-size provisions in general provisions (§ 20.48.80; § 21.46.80)
Agricultural interface	New homes near ag land must buffer	100‑ft minimum agricultural buffer and any adjustments (§ 20.48.95)
Flood overlays	Extra permits or construction standards may apply	FP1 requires a use permit and flood‑proofing; FP3 has no extra standards (§ 21.37; § 21.39)
Mixed-use or downtown sites	Downtown commercial standards vary and may allow residential by permit	Key C‑2 and C‑3 standards and R‑3 cross‑references (§ 20.28; § 20.29; § 20.20.20)

Information Gaps

The retrieved materials did not include complete dimensional standards or full use lists for several districts. Not found in retrieved materials for: A, AI, RCA1, RCA2, TPZ, CT, RR‑1, RRA, R‑1 principal permitted uses, R‑3 dimensional standards, C‑1, C‑4, M, MP, PF, B, C, W, and FP2. Verify with the jurisdiction.

Plain-English Summary

Start by checking whether your unincorporated parcel is in the Coastal Zone (Title 21) or inland (Title 20) and then find your base district and any overlays on the county’s official zoning maps. From there, confirm your use is allowed and fit the lot size, setbacks, height, and any buffers (especially near agriculture). Many districts allow accessory dwelling units, and some commercial districts allow housing with conditions, but always verify title-specific rules and, for the coast, that the use is expressly permitted.

Source References

Title 20 Zoning: § 20.06.50 (maps on file); § 20.08.5, § 20.08.10, § 20.08.20 (PO); § 20.17.20, § 20.17.30–.90 (R‑1); § 20.18.10, § 20.18.20, § 20.18.60–.80 (R‑2); § 20.20.10–.20 (R‑3); § 20.20B.40–.50 (MHP); § 20.23.10–.20 (C‑R); § 20.28.10–.40 (C‑2); § 20.29.30–.70 (C‑3); § 20.34.5, § 20.34.10, § 20.34.40–.80 (FR‑2); § 20.35.10–.20 (FR‑1); § 20.48.10, § 20.48.20, § 20.48.70, § 20.48.80, § 20.48.95, § 20.48.100 (general provisions).
Title 21 Coastal Zoning: § 21.02.10–.50 (coastal enabling); § 21.06.20–.50 (districts, maps); § 21.06.40 (uses govern); § 21.08.10 (AE intent); § 21.20.30–.50 (MHP coastal); § 21.21.10–.30 (R‑2 coastal); § 21.37.10–.20 (FP1); § 21.39.10–.20 (FP3); § 21.40.10–.40 (MH combining); § 21.46.10, § 21.46.20, § 21.46.70, § 21.46.80 (general provisions).

Sources

Retrieved passages

Del Norte County Zoning Code (Section 20.32.030) High relevance
Del Norte County Zoning Code (Chapter 21.50.) High relevance
Del Norte County Zoning Code (§ 42) High relevance
CBC § 5.0100 (title of) High relevance
Del Norte County Zoning Code (Chapter 21.50.) High relevance
Del Norte County Zoning Code (Section 21.50.40) High relevance
Del Norte County Zoning Code (§ 3) High relevance
Del Norte County Zoning Code (Section 20.48.90) High relevance

Cited sections

Official Del Norte County code library

Frequently asked questions

What can I build on an R-1 lot in unincorporated Del Norte County?

R‑1 primarily accommodates single-family homes; the retrieved code lists uses that may require a use permit (public uses, home occupations, a guest house, limited animal husbandry, guest lodging). Dimensional rules include a 35 ft height, 1‑acre minimum lot, 100‑ft width, 25‑ft front, and 20‑ft rear setbacks (§ 20.17.20, § 20.17.30–.90). Verify principal permitted uses with the County.

What are Del Norte County’s typical residential setbacks?

Examples: R‑1 requires front 25 ft, sides 10 ft or 10% of lot width (min 5 ft), and rear 20 ft (main)/5 ft (accessory) (§ 20.17.70–.90). R‑2 requires front 25 ft, sides 5 ft, and rear 20 ft (main)/5 ft (accessory) (§ 20.18.80). Always check your specific district title (20 vs. 21) and map overlays.

How do I know if my parcel is in the Coastal Zone and which rules apply?

Check the official zoning maps on file with the Planning Director; parcels inside the Coastal Zone use Title 21 (the county’s certified LCP). The Planning Commission decides any boundary uncertainty (§ 21.02.20; § 21.06.20–.50; § 21.06.30).

Are ADUs allowed in unincorporated Del Norte County?

Yes—multiple districts expressly allow accessory dwelling units and junior ADUs (e.g., PO, FR‑1, FR‑2, R‑3, C‑R). State law also applies. See §§ 20.08.10, 20.35.20, 20.34.10, 20.20.20, 20.23.20 and California ADU law.

Do commercial districts allow housing?

Yes, in some cases. In C‑2, multiple dwellings are allowed with a use permit and must meet R‑3 standards; transitional/supportive housing and SROs are also listed (§ 20.28.30). In C‑3, multiple dwellings may be permitted and R‑3 dimensional standards may apply (§ 20.29.30).

Where do I find parking, landscaping, or sign rules?

See the county’s general provisions and district chapters for cross-references, then consult the dedicated chapters and the GoCodebook primers on Parking, Landscaping and Screening, and Signage. Title 20 and Title 21 also allow certain signs by use permit (§ 20.48.20; § 21.46.20).

What if my lot is smaller than today’s minimum?

Both titles include special lot rules that may allow development on lots smaller than current minimums, if the lot was legally created and other criteria are met (§ 20.48.80; § 21.46.80). Check access requirements and health regulations.

Are there special buffers near agriculture?

Yes. New discretionary development adjacent to “agricultural lands” must include at least a 100‑ft setback/buffer, adjustable based on site conditions and Agricultural Commissioner input (§ 20.48.95).

What happens if zoning boundaries on the map are unclear?

In the Coastal Zone, the Planning Commission determines boundary locations upon application, using the official maps (§ 21.06.30; § 21.06.50). A similar “maps on file” rule exists for Title 20 (§ 20.06.50).

Do I need a variance or other exception?

Possibly. If you cannot meet a district’s standards, consult Variances and Exceptions and discuss with County staff. Some flexibility exists via use permits identified in the general provisions (§ 20.48.20; § 21.46.20). Verify with the jurisdiction.

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