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Del Norte County — Development Standards

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

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Last reviewed: July 6, 2026

Overview

In unincorporated areas of Del Norte County, development standards live primarily in two local titles: inland areas follow Title 20 Zoning, while parcels in the California Coastal Zone follow Title 21 Coastal Zoning. Core standards—setbacks, building height, lot coverage, minimum lot size/width, and sometimes density—are set district-by-district and may be adjusted by countywide provisions and combining overlays. If your site is coastal, expect Title 21 to modify or supersede Title 20 rules for the same or similar district labels.

Always confirm whether your parcel is in the Coastal Zone (Title 21) or inland (Title 20). Standards, exceptions, and permit procedures can differ even for similarly named districts.

Use this page with the county’s zoning and land use maps and be ready to cross-check overlays and coastal requirements.

How to read Del Norte’s development standards

  • Title 20 (inland) structures districts such as R-1, RR-1, R-2, R-3, C-1, C-2, C-4, M, MP, FR-1, FR-2, and agriculture variants; each has its own dimensional standards table/sections.
  • Title 21 (coastal) mirrors some districts (e.g., R-2, MP) and adds Harbor and coastal agriculture districts; it also contains general coastal development provisions and combining districts that can alter or add standards.
  • General provisions sometimes override/qualify district rules:
    • Height exceptions for appurtenances and fences apply countywide, with separate inland/coastal sections (inland § 20.48.70; coastal § 21.46.70) .
    • “Special lot sizes” can legalize substandard parcels if they meet criteria (inland § 20.48.80; coastal § 21.46.80) .

District-by-district standards (in unincorporated areas)

R-1 One-Family Residence (Title 20)

  • Purpose/uses: Protects single-family neighborhoods; allows one home plus ADUs and JADUs, with small care and home occupation allowances (§ 20.16.10, § 20.16.20) .
  • Key standards:
    • Height: 35 ft main; 16 ft accessory (§ 20.16.40) .
    • Minimum lot: 7,200 sf with public water or sewer; 12,000 sf when neither is available (§ 20.16.50) .
    • Width: 60 ft (§ 20.16.60) .
    • Lot coverage: 35% (§ 20.16.70) .
    • Setbacks: Front 25 ft (§ 20.16.80), side 6 ft (or 5 ft on narrow lots) (§ 20.16.90), rear 20/5 ft main/accessory (§ 20.16.100) .
  • Where applied: Urban/suburban neighborhoods outside the Coastal Zone.

RR-1 Rural Residential (Title 20)

  • Purpose/uses: One-acre rural homesites; protects rural character; ADUs/JADUs allowed (§ 20.17.5, § 20.17.10) .
  • Key standards:
    • Height: 35 ft (§ 20.17.30) .
    • Minimum lot: 1 acre; width 100 ft (§ 20.17.40–.50) .
    • Lot coverage: 20% (§ 20.17.60) .
    • Setbacks: Front 25 ft (§ 20.17.70), side 10 ft (or 10% of width, min 5 ft) (§ 20.17.80), rear 20/5 ft main/accessory (§ 20.17.90) .
  • Where applied: Low-density rural areas inland.

R-1A Residential and Agricultural (Title 20)

  • Purpose/uses: One–five acre “ranchette”-style lots supporting limited animal and agricultural use; ADUs/JADUs permitted (§ 20.13.10–.20) .
  • Key standards: Height 35 ft (§ 20.13.40), minimum lot 1 acre, width 100 ft (§ 20.13.50–.60), lot coverage 20% (§ 20.13.70), front 25 ft, side 10 ft or 10% (≥ 5 ft), rear 20/5 ft main/accessory (§ 20.13.80–.100); special larger separations for barns/livestock (§ 20.13.110) .

R-2 Low Density Multiple-Family (Title 20)

  • Purpose/uses: Allows duplex on qualifying lot; ADUs/JADUs permitted (§ 20.18.10–.20) .
  • Key standards: Height 35/20 ft main/accessory (§ 20.18.40), minimum lot 7,200 sf (net) with density of 1 unit/3,600 sf up to 2 units/lot (§ 20.18.50), width 60 ft and ≤ 3:1 lot length ratio (§ 20.18.60), lot coverage 35% (§ 20.18.70), setbacks front 25 ft, side 5 ft, rear 20/5 ft main/accessory (§ 20.18.80) .

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

  • Purpose/uses: Garden apartments/general apartments; includes supportive/transitional housing and SROs as permitted uses (§ 20.20.10–.20) .
  • Key standards: Width 60 ft (§ 20.20.60), lot coverage 60% if lot ≥ 12,000 sf and 35% if < 12,000 sf (§ 20.20.70), setbacks front 20 ft, side 5 ft, rear 15/5 ft main/accessory (§ 20.20.80–.100). “Dwelling groups” have special yard rules (pointer) (§ 20.20.110) .
  • Height: Not found in retrieved materials. Verify with the jurisdiction.

C-1 Neighborhood Commercial (Title 20)

  • Purpose/uses: Small, quiet neighborhood-serving uses; single-family housing and ADUs/JADUs are allowed, with limited commercial by use permit (§ 20.24.10–.30) .
  • Key standards: Height equals the lowest adjoining residential limit (§ 20.24.40); coverage up to 100% (§ 20.24.60); no yards unless abutting an R district (then match R setbacks) (§ 20.24.70) .
  • Parking: See Chapter 20.46 and the county’s parking page (§ 20.24.80) .

C-2 Light Commercial (Title 20)

  • Purpose/uses: Community shopping/business districts; wide slate of indoor retail and services (§ 20.26.10–.20) .
  • Key standards: Height 45 ft (§ 20.26.40), minimum lot none with services or 12,000 sf without (§ 20.26.50), width 25 ft (§ 20.26.60), coverage up to 100% (§ 20.26.70), no yards except adjacency rules (§ 20.26.80–.100) .

C-4 General Commercial (Title 20)

  • Purpose/uses: Heavier retail, some light industrial, and housing in limited form; includes specific housing element sites (§ 20.29.10–.20) .
  • Key standards: Height 45 ft (§ 20.29.40), minimum lot none with services or 12,000 sf without (§ 20.29.50), width 25 ft (§ 20.29.60), coverage up to 100% (§ 20.29.70), no yards (with R adjacency exceptions) (§ 20.29.80–.100); dwelling groups follow special yard rules (§ 20.29.110) .

M Manufacturing & Industrial (Title 20)

  • Purpose/uses: General industrial; higher-intensity uses by use permit (§ 20.30.10–.30) .
  • Key standards: Height 75 ft (§ 20.30.40). Lot size/width/yard standards are established similarly to commercial districts in this chapter (confirm exact setbacks per project). Minimum lot may be none with services or 12,000 sf without (§ 20.30.50) .

MP Manufacturing and Industrial Performance (Title 20 and Title 21)

  • Purpose/uses: Industrial areas subject to performance standards; inland MP may not be located next to an R district (§ 20.31.5) .
  • Inland MP (Title 20) key standards: Width 25 ft (§ 20.31.50), coverage up to 100% with services (§ 20.31.60), front 30 ft, side none (street-side corner 30 ft), rear none (§ 20.31.70–.90). Noise/odor/air limits apply (§ 20.31.100) .
  • Coastal MP (Title 21) key standards: Width 30 ft (§ 21.32.60), coverage up to 100% (§ 21.32.70), front 30 ft, side none (street-side corner 30 ft), rear none (§ 21.32.80–.100); with identical performance standards (§ 21.32.110) .

FR-1 Forest & Recreation (Title 20)

  • Purpose/uses: Recreation/timber settings with single-family, resort, and related uses (§ 20.35.10–.20) .
  • Key standards: Height 35 ft (§ 20.35.40), minimum lot 1 acre (§ 20.35.50), front 30 ft (§ 20.35.60), side 10 ft or 10% rule, rear 20/5 ft main/accessory (§ 20.35.70–.80), coverage 30% (§ 20.35.90) .

FR-2 Forest–Recreation (Title 20)

  • Purpose/uses: Transitional conservation/recreation areas near state/federal lands; applied next to or near parks/forests (§ 20.34.5) .
  • Key standards: Height 35 ft (§ 20.34.30), minimum lot ≥ 2 acres (§ 20.34.40), front 40 ft, side 15 ft, rear 50/30 ft main/accessory (§ 20.34.50–.70), coverage 20% (§ 20.34.80) .

Coastal residential/commercial highlights (Title 21)

  • R-2 (Coastal) standards mirror inland duplex neighborhoods but fix height at 30 ft for primary and 16 ft for detached accessory buildings; coverage 35%; front 25 ft, side 5 ft, rear 20/5 ft main/accessory; lot 7,200 sf min; density by the General Plan for the building site (§ 21.21.40–.80, § 21.21.50) .
  • C-3/C-4-like coastal districts exist but check your exact coastal district chapter for setbacks, coverage, and yard exceptions; many allow 0 ft yards unless abutting R districts (see, by example, § 21.27.80–.100) .

Harbor area districts (Title 21)

  • 21.47B Harbor district (title line omitted here): Height 45 ft; minimum lot 2,850 sf; width 30 ft; coverage up to 100%; front/side/rear yards typically none unless Chapter 21.47 or § 21.46.090 requires otherwise (§ 21.47B.40–.100) .
  • 21.47C HVSC Harbor Visitor Serving Commercial: Height 45 ft; minimum lot 2,850 sf; width 30 ft; coverage up to 100%; front/side/rear none unless modified by Chapter 21.47/§ 21.46.090 (§ 21.47C.40–.100) .

Coastal Agriculture (Title 21)

  • A-5/A-20 Agricultural General: Height limit none; minimum lot 5 acres (A-5) or 20 acres (A-20); front 25 ft; side 20 ft (or 10% to a 5 ft minimum on narrow sites); rear 20/5 ft main/accessory; special yards for animal buildings apply (§ 21.09.40–.100) .

Combining/overlay districts that affect development standards

  • D Combining District (Coastal): Used to limit further land division; replaces base minimum lot size rules in favor of cluster/varied-lot patterns but must not exceed General Plan density; includes rural-lot “average size” methodology and LCP certification steps (§ 21.36.10–.30) .
  • FP1 Flood Zone Area Combining District (Coastal): All uses require a use permit; structures must be floodproofed and avoid obstructing flood flows (§ 21.37.10–.20) .
  • CBCD Cannabis Business Combining District (inland): Applies to certain commercial/manufacturing zones inside specific urban service boundaries; governs whether cannabis activities are allowed—not typical setbacks/height (§ 20.36.10) .
  • Coastal views over 25 feet: Some Title 21 residential projects exceeding 25 ft height must include a visual resources analysis with CDP application (§ 21.50.80) .

Quick reference table (selected districts)

District (Title) Height Min Lot / Width Lot Coverage Setbacks (F/S/R) Notes Code Reference
R-1 (20) 35 ft main; 16 ft accessory 7,200 sf w/ services; 12,000 sf w/o; 60 ft width 35% 25 / 6 (≥5) / 20-5 Single-family + ADUs/JADUs § 20.16.40–.100
RR-1 (20) 35 ft 1 acre; 100 ft width 20% 25 / 10 (or 10%≥5) / 20-5 Rural residential § 20.17.30–.90
R-2 (20) 35/20 ft 7,200 sf (net); 60 ft width 35% 25 / 5 / 20-5 1 unit/3,600 sf (max 2 units/lot) § 20.18.40–.80, § 20.18.50
R-3 (20) Verify 60 ft width 60% ≥12k; 35% <12k 20 / 5 / 15-5 Apt/garden apt § 20.20.60–.110
C-1 (20) Match lowest adjacent R n/a Up to 100% None unless abutting R Neighborhood-serving § 20.24.40–.70
C-2 (20) 45 ft None w/ services; 12,000 sf w/o; 25 ft width Up to 100% None (R adjacency applies) Community commercial § 20.26.40–.100
C-4 (20) 45 ft None w/ services; 12,000 sf w/o; 25 ft width Up to 100% None (R adjacency applies) General commercial § 20.29.40–.110
M (20) 75 ft See chapter; often none/12k n/a See chapter General industrial § 20.30.40–.50
MP (20) n/a 25 ft width Up to 100% 30 / 0 (30 on street corner) / 0 Perf. standards apply § 20.31.50–.100
FR-1 (20) 35 ft 1 acre 30% 30 / 10 / 20-5 Forest/recreation § 20.35.40–.90
FR-2 (20) 35 ft ≥2 acres 20% 40 / 15 / 50-30 Transitional rec/conservation § 20.34.30–.80
R-2 (21) 30 ft main; 16 ft det. accessory 7,200 sf; 60 ft width 35% 25 / 5 / 20-5 Density by GP § 21.21.40–.80, § 21.21.50
MP (21) n/a 30 ft width Up to 100% 30 / 0 (30 on street corner) / 0 Perf. standards apply § 21.32.60–.110
Harbor 21.47B 45 ft 2,850 sf; 30 ft width Up to 100% None (see ch. 21.47) Harbor-dependent uses § 21.47B.40–.100
Harbor 21.47C 45 ft 2,850 sf; 30 ft width Up to 100% None (see ch. 21.47) Visitor-serving § 21.47C.40–.100

Note: Floor Area Ratio (FAR) is not a commonly used control in the retrieved Del Norte County materials. Not found in retrieved materials.

Cross-cutting rules you’ll likely encounter

  • Corner lot and dwelling-group yard rules: Several zones refer you to “special yards” sections; for example, C-2/C-4 and R-3 point to the dwelling-groups yard standards (§ 20.26.110, § 20.29.110, § 20.20.110) .
  • Accessory structures and fences: Height and placement exceptions require checking the general height/fence sections (inland § 20.48.70; coastal § 21.46.70) .
  • Parking: Commercial and multifamily projects must meet off-street standards (e.g., inland C-1 explicitly invokes Chapter 20.46; many Title 21 chapters similarly reference parking) (§ 20.24.80) . See the county parking page.

Practical notes for applicants

  • Adjacency exceptions are common in commercial districts (C-1, C-2, C-4): “No yards” flips to residential-like setbacks where a commercial lot abuts an R district (§ 20.24.70, § 20.26.90, § 20.29.90) .
  • Water/sewer availability affects minimum lot size in several commercial and industrial districts (e.g., C-2, C-4, M), toggling between “none” and 12,000 sf (§ 20.26.50, § 20.29.50, § 20.30.50) .
  • Coastal parcels may trigger a Coastal Development Permit and, in some cases, a visual resources analysis for buildings over 25 ft (§ 21.50.80) . Check design review expectations early.
  • ADUs are broadly permitted across residential and many non-residential districts (e.g., R-1, R-2, R-3, C-1, C-2, C-4)—but still must meet the base district’s height, setback, and coverage standards at time of permitting (see sample coastal ADU rule in § 21.21.40 and inland rules embedded across chapters) . For state context, see California ADU law.

Checklist

  • Confirm your parcel is in unincorporated Del Norte County and determine whether Title 20 (inland) or Title 21 (Coastal Zone) controls it (overview).
  • Identify the base zoning district and read its dimensional standards (height, setbacks, coverage, minimum lot/width, density where applicable) in the correct title (zoning).
  • Check for combining/overlay districts (e.g., D, FP1, CBCD) that modify lot sizes, uses, or procedures (overlays).
  • Verify adjacency rules if your commercial/industrial lot touches an R district (yards often increase).
  • Confirm parking compliance and any “special yard” references to other chapters (parking).
  • If in the Coastal Zone, confirm whether a Coastal Development Permit and view analysis apply for taller residential projects (§ 21.50.80) .
  • If using a nonconforming lot or structure, confirm what can continue/expand under nonconforming uses.
  • If strict application causes hardship, evaluate relief pathways under variances and exceptions.
  • Coordinate early with staff on design expectations and site planning (design review).

Risks & Ambiguities

Issue Why it matters What to verify
Inland vs. Coastal title The same district label can have different numbers/requirements Confirm which title applies (Title 20 vs. 21) and whether a Coastal Development Permit is required; see coastal visuals trigger over 25 ft (§ 21.50.80)
Commercial “no-yard” rules C-1/C-2/C-4 often allow 0-ft yards until a residential boundary appears Check adjacency exceptions in your chapter (§ 20.24.70, § 20.26.90, § 20.29.90)
Water/sewer toggles Minimum lot area can switch to “none” if both utilities are public or mutual Confirm service availability and the exact section (e.g., § 20.26.50, § 20.29.50, § 20.30.50)
Performance standards in MP Industrial feasibility can hinge on external-effects limits Review MP performance standards before choosing a site (inland § 20.31.100, coastal § 21.32.110)
Special yards/dwelling groups Multi-building projects may need extra separations Follow the “special yards” cross-references (e.g., § 20.20.110, § 20.29.110, § 20.26.110)

Plain-English Summary

In unincorporated Del Norte County, what you can build—and how big, tall, and close to the lines it can be—depends on your zoning district and whether you’re in the Coastal Zone. Most residential neighborhoods share familiar rules (25-ft front setbacks; 35-ft heights inland), while commercial and industrial areas often allow full-lot coverage and no setbacks unless next to homes. Coastal parcels have their own chapters and sometimes extra review for height and views. When in doubt, verify your title, your overlays, and any adjacency exceptions.

Source References

Sources

Retrieved passages

  • Del Norte County Zoning Code (Section 21.52.20) High relevance
  • Del Norte County Zoning Code (Chapter 21.34) High relevance
  • Del Norte County Zoning Code (§ 42) High relevance
  • Del Norte County Zoning Code (§ 3.0805) High relevance
  • Del Norte County Zoning Code (Section 20.32.030) High relevance
  • Del Norte County Zoning Code (Section 20.48.90) High relevance
  • Del Norte County Zoning Code (chapter is) High relevance
  • Del Norte County Zoning Code (§ 1) High relevance
  • Del Norte County Zoning Code (§ 43) High relevance
  • Del Norte County Zoning Code (§ 40) High relevance
  • Del Norte County Zoning Code (§ 24) High relevance
  • Del Norte County Zoning Code (Section 20.48.90.) High relevance
  • Del Norte County Zoning Code (§ 4) High relevance
  • Del Norte County Zoning Code (§ 3) High relevance
  • Del Norte County Zoning Code (§ 36) High relevance
  • Del Norte County Zoning Code (Section 20.48.80.) High relevance
  • Del Norte County Zoning Code (§ 1) High relevance
  • Del Norte County Zoning Code (§ 4) High relevance
  • Del Norte County Zoning Code (§ 31) High relevance
  • Del Norte County Zoning Code (chapter apply) High relevance
  • Del Norte County Zoning Code (§ 38) High relevance
  • Del Norte County Zoning Code (Title 18.) High relevance

Cited sections

Frequently asked questions

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

In unincorporated areas, R-1 primarily allows a single-family home plus ADUs and JADUs, subject to 35 ft building height for the main home, 16 ft for detached accessory buildings, 35% lot coverage, and standard setbacks (front 25 ft, side 6 ft minimum, rear 20/5 ft main/accessory) under § 20.16.40–.100 .

What are the basic setbacks for rural one-acre lots (RR-1)?

RR-1 requires at least 25 ft front, 10 ft side (or 10% of lot width, minimum 5 ft), and 20/5 ft rear main/accessory, with a 35 ft height limit and 20% lot coverage per § 20.17.30–.90 .

Do commercial lots really have zero setbacks?

Often yes. C-1, C-2, and C-4 allow no front/side/rear yards, but if a side abuts a residential (R) district, the abutting yard must meet residential-like minimums; see § 20.24.70, § 20.26.90, and § 20.29.90 .

How tall can I build in the Coastal Zone for a residential project?

In coastal R-2, primary buildings are capped at 30 ft and detached accessory buildings at 16 ft (§ 21.21.40). Some residential projects over 25 ft elsewhere in Title 21 may require a visual resources analysis with the CDP (§ 21.50.80) .

Are ADUs allowed in commercial zones?

Yes, several commercial districts recognize ADUs/JADUs where a legal residence is present (e.g., C-1, C-2, C-4 list ADUs/JADUs). ADUs must still meet the zone’s height, coverage, and setback rules at the time of permitting; see each chapter’s permitted uses and general ADU references (e.g., § 20.24.20, § 20.26.20, § 20.29.20) .

What industrial standards apply in “MP” zones?

MP focuses on performance: up to 100% coverage with services, 30 ft front yard, no side yard except 30 ft on a street-side corner, and no rear yard (inland § 20.31.60–.90; coastal § 21.32.70–.100). Noise/odor/air standards also apply (§ 20.31.100, § 21.32.110) .

How does the “D” combining district change lot sizes?

In the Coastal Zone, the D combining overlay can replace base minimum-lot rules to allow clustered or varied lots but must respect General Plan density and, outside the urban/rural boundary, average surrounding parcel size. LCP certification may be required (§ 21.36.10–.30) .

Do harbor-area sites have special setbacks?

Harbor districts often allow full coverage and no yards unless the Harbor chapter or coastal general provisions require them. For example, 21.47B and 21.47C set 45 ft height, 2,850 sf minimum lot, 30 ft width, and typically no front/side/rear yards unless Chapter 21.47/§ 21.46.090 imposes them (§ 21.47B.40–.100, § 21.47C.40–.100) . ---

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