Local zoning · Del Norte County

Del Norte County — Design Review

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

Last reviewed: July 6, 2026

Overview

In unincorporated Del Norte County, “design review” is not a single, stand‑alone permit. Instead, the zoning ordinances in Title 20 (inland) and Title 21 (coastal) embed design-focused review in specific districts, overlays, and entitlement processes. The most common design review touchpoints are: coastal visual resource protections, multi‑unit objective design standards, and plan/elevation reviews tied to use permits or special districts such as Planned Community and Mobilehome Park districts.

Key rule for coastal homes: if your new residential structure would exceed 25 feet and is visible from designated coastal view corridors, you must submit a visual resources analysis and undergo Environmental Review Committee design compatibility review. Approved homes must be visually compatible and sited to protect views and minimize landform alteration. See § 21.50.80.

Use this page with the broader Del Norte County zoning & planning overview and topic pages for Zoning, Development Standards, Parking, Overlay Districts, Signage, Historic Preservation, and Variances and Exceptions.

What “Design Review” means in Del Norte County

Coastal visual protections: Within the coastal zone, Del Norte’s Local Coastal Program requires special attention to scenic resources. In designated “highly scenic” areas, the Board of Supervisors may form an Architectural Review Committee to review new development and recommend design/placement guidelines before permits proceed. These areas are created as combining overlays; guidelines must be adopted into the code before permit review begins (§ 21.35.50).
Coastal visual resources analysis: For portions of residential districts visible from mapped coastal viewpoints and corridors, any new home over 25 feet must include a visual resources analysis, and is reviewed for visual compatibility by the Environmental Review Committee (§ 21.50.80).
Multi‑unit objective design standards (inland): Title 20 includes countywide, objective architectural and site requirements for multi‑unit and mixed‑use residential projects (e.g., pedestrian connectivity; screening; adjacency setbacks). If a qualifying project seeks deviations from these standards or other Title 20 regulations, it needs a use permit and “may be subject to a discretionary design review process” (§ 20.68.10–.30).
Plan/elevation submittals with entitlements: Various use permits and special districts require plot plans and elevations as part of application completeness (e.g., use permits in the coastal zone; Planned Community districts). These submittals function as design review checkpoints (§ 21.50C.30; § 20.32.30).

Where design review shows up by district or overlay (unincorporated areas)

Highly Scenic Visual Resource Areas (Coastal — Combining Overlay)

Purpose: Protect identified coastal vistas; establish guidelines and an Architectural Review Committee for evaluating new development design and placement (§ 21.35.50).
Applicability: Any base zoning within coastal areas designated “highly scenic” by combining overlay. Guidelines must be adopted into the code before they are used.
Typical outcomes: Site/architectural adjustments to reduce landform alteration, refine building siting, and manage sign design for scenic compatibility (§ 21.35.50(C)).
Key dimensional standards: Determined by the underlying base district; the overlay adds design compatibility review.

Residential Districts in the Coastal Zone subject to Visual Resources Analysis (e.g., R‑2 and R‑3 under Title 21)

Purpose: Ensure taller coastal‑visible homes protect public views and coastal character via objective visual analysis and siting/design choices (§ 21.50.80).
Applicability: Portions of residential zones mapped as visible from Local Coastal Program view corridors/viewpoints; triggers when a new home exceeds 25 feet in maximum height.
Typical permitted uses:
- R‑2 (Low Density Multiple‑Family – coastal): single‑family or duplex, with accessory buildings (§ 21.21.20). Height limits are 30 ft for primary residences and 16 ft for detached accessory buildings (§ 21.21.40). Setbacks: 25 ft front, 5 ft sides, 20 ft rear for main building (§ 21.21.80).
- R‑3 (High Density Multiple‑Family – coastal): multiple dwellings and dwelling groups; base standards set in Chapter 21.22 (uses and dimensions as adopted) — confirm per parcel. “Not found in retrieved materials” for numeric R‑3 dimensional values here.
Where it applies: Coastal zone areas only; inland projects use Title 20 standards.

Planned Community — P‑C (Title 20, inland)

Purpose: Enable integrated, master‑planned projects and “affect a design control over the development” (§ 20.32.10).
Applicability: Parcels ≥1 acre with complete development plans reviewed/approved by the Planning Commission; the P‑C district is established concurrently (§ 20.32.20).
Typical permitted uses: Any uses otherwise allowed in R‑1, R‑2, R‑3, C‑1, and F‑R districts, but all are subject to the P‑C’s use permit process (§ 20.32.40).
Key dimensional standards: Set by the Planning Commission based on the closest analogous districts; submittals must include site maps and elevations for all non‑single‑family buildings (§ 20.32.30, § 20.32.40).

Planned Community — P‑C (Title 21, coastal)

Purpose: Coastal version of the P‑C district; all uses require a use permit, with density governed by the General Plan Coastal Element (§ 21.23.30, § 21.23.50).
Applicability: Parcels meeting minimum size and suitability (§ 21.23.20).
Typical permitted uses: Residential (R‑1, R‑2, R‑3, MH‑1/2) and C‑1‑like commercial, all by use permit (§ 21.23.40).
Key dimensional standards: Building heights, area, coverage, yards, parking, and screening are set by the Planning Commission to mirror analogous districts; applications must include scaled maps and elevations, including sign elevations for non‑single‑family buildings (§ 21.23.60, § 21.23.70).

Mobilehome Park Districts — MHP (Title 20, inland) and MH (Title 21, coastal)

Purpose: Provide standards for mobilehome/mobilehome park development; ensure plan consistency and public agency sign‑offs (§ 20.20A.10; § 21.20.50).
Applicability: New or expanded parks; Planning Commission reviews construction/improvement plans at a noticed meeting (§ 20.20A.50; § 21.20.50).
Typical permitted uses: Mobilehome parks and related residential uses; see each chapter for supporting uses (§ 20.20A.20).
Key dimensional standards: Minimum project area (generally 1 acre); overall park density governed by the chapter; verify per inland/coastal chapter (§ 20.20A.40; coastal counterpart § 21.20.40).

Multi‑Unit Residential Projects subject to Objective Design Standards (Title 20)

Purpose: Establish objective, uniformly verifiable design rules for multi‑unit and mixed‑use residential projects (§ 20.68.10).
Applicability: Duplexes and larger multi‑unit projects, and all mixed‑use structures that include multi‑unit dwellings (§ 20.68.10(B)).
Typical standards:
- Pedestrian pathways linking on‑site elements and public sidewalks (§ 20.68.20(C)).
- Screening of service/auxiliary structures with specified materials (§ 20.68.20(D)).
- Adjacency massing step‑backs next to single‑story homes (setback at least 1:1 to height) (§ 20.68.20(E)(2)).
- Perimeter fencing height limits and placement (§ 20.68.30(1)).
Deviations: If you seek exceptions, a use permit is required and “may” trigger a discretionary design review process (§ 20.68.10(C)(3)).

Example base districts frequently intersecting with design review steps

Inland R‑2 (Title 20): Duplex‑capable; setbacks 25 ft front, 5 ft sides, 20 ft rear; lot width ≥60 ft; “Not found in retrieved materials” for a Title 20 R‑2 height value (§ 20.18.60–.80).
Coastal R‑2 (Title 21): Duplex‑capable; height 30 ft (primary), 16 ft (detached accessory); 25 ft front, 5 ft sides, 20 ft rear (§ 21.21.40, § 21.21.80).
Inland C‑2 (Title 20 “Downtown Commercial”): Multi‑unit allowed with use permit and must meet R‑3 standards; 45 ft height; 0 ft front/side in many cases; strong tie‑in to § 20.68 objective standards for mixed‑use residential designs (§ 20.28.30, § 20.28.40).

Quick decision table — When does design review apply?

Trigger or Area	What is reviewed	Who reviews	Code Reference
Coastal “highly scenic” visual resource combining overlay	Site/architecture against adopted scenic guidelines; signs	Architectural Review Committee (when established); County decision-makers use adopted guidelines	§ 21.35.50
Coastal residential visible from designated viewpoints AND new structure > 25 ft	Visual resources analysis; height/siting compatibility to protect views	Environmental Review Committee; Planning Commission/Board as applicable	§ 21.50.80
Multi‑unit or mixed‑use residential (Title 20)	Objective design/site standards (pedestrian paths, screening, adjacency massing, etc.)	Staff applies objective standards; deviations need a use permit and may undergo discretionary design review	§ 20.68.10–.30
Planned Community (P‑C)	Full development plan set including elevations; Planning Commission sets tailored standards	Planning Commission via use permit	§ 20.32.20–.40; § 21.23.60–.70
Mobilehome Parks (MHP/MH)	Construction/improvement plans reviewed for consistency	Planning Commission meeting; agency sign‑offs	§ 20.20A.50; § 21.20.50
Any coastal use permit	Plot plan and any requested elevations to illustrate impacts	Staff/ERC; Planning Commission	§ 21.50C.30

Related rules often interact: Development Standards for setbacks/heights, Parking, Landscaping and Screening, Nonconforming Uses, and Signage (for example, some coastal commercial signage is “subject to Title 18” when over size limits in coastal districts).

Process touchpoints you’ll see called “design review”

Architectural Review Committee (coastal, highly scenic overlay): advisory design recommendations incorporated before permit decisions (§ 21.35.50).
Environmental Review Committee: design compatibility review for coastal homes >25 ft within mapped view corridors (§ 21.50.80).
Planning Commission review of plans/elevations: required submittals for P‑C districts and for mobilehome parks (§ 20.32.30; § 20.20A.50; § 21.20.50).
Use permit application contents (coastal): plot plans plus any building plans/elevations requested to show compliance and impacts (§ 21.50C.30).

Checklist

Confirm if your site is in the coastal zone; if so, check mapped scenic viewpoints/corridors and whether a coastal overlay applies (verify any “highly scenic” combining overlay boundaries). § 21.35.50; § 21.50.80.
If proposing a coastal home >25 ft visible from mapped viewpoints/corridors, prepare a visual resources analysis addressing height, width, siting, and alternatives (§ 21.50.80).
For multi‑unit or mixed‑use residential (Title 20), demonstrate compliance with objective design standards or request a use permit for any deviation (§ 20.68.10–.30).
If using a P‑C district, submit complete development plans and building elevations for Commission approval (§ 20.32.20–.30; coastal § 21.23.60–.70).
For mobilehome parks, submit construction/improvement plans for Planning Commission review plus agency approvals (§ 20.20A.50; § 21.20.50).
Include plot plans and any requested elevations with coastal use permits (§ 21.50C.30).
Coordinate ancillary requirements early: Parking, Signage references in your district, and Variances and Exceptions if standards cannot be met. See also state California Building Standards Code for construction, and California housing laws or California ADU law if applicable.

Risks & Ambiguities

Issue	Why it matters	What to verify
Are you in a designated “highly scenic” coastal overlay?	Triggers Architectural Review Committee guidelines and design recommendations before permits proceed	Confirm mapped overlay and whether guidelines have been adopted as code amendments (§ 21.35.50(D))
Is your coastal home over 25 ft and visible from mapped viewpoints/corridors?	Requires visual resources analysis and ERC design compatibility review	Map view corridors; confirm visibility; scope the analysis content per § 21.50.80
Requesting deviations to objective standards for multi‑unit housing?	Converts an objective, ministerial check into a discretionary use permit with potential design review	Identify each deviation and process under § 20.68.10(C)(3) with § 20.56 (use permits)
Using a P‑C district to set custom standards?	Your dimensional standards and design controls are set case‑by‑case by the Commission	Prepare complete plans/elevations; ensure consistency with analogous districts (§ 20.32.20–.30; § 21.23.60)
Coastal permit jurisdiction/appealability	Some coastal areas are under Coastal Commission jurisdiction; local approvals don’t replace a coastal permit	Check § 21.50.40 maps and coordination notes (§ 21.50.40; § 21.50.20 context)

Plain-English Summary

In unincorporated Del Norte County, “design review” most often appears when a project is in the coastal zone, proposes a taller home visible from mapped viewpoints, is a multi‑unit residential or mixed‑use project under objective design rules, or uses a special district like Planned Community or Mobilehome Park. Expect to show site plans, elevations, and—on the coast—view analyses that prove your project fits the setting. If you need exceptions, you’ll switch into a discretionary use permit track that may include formal design review.

Source References

Coastal scenic/architectural review committee: § 21.35.50 (Title 21 — Coastal Zoning)
Coastal visual resources analysis for homes >25 ft: § 21.50.80 (Title 21)
Objective design and development standards (multi‑unit, Title 20): § 20.68.10–.30
Planned Community (inland): § 20.32.10–.40; (coastal): § 21.23.20–.70
Mobilehome Parks: § 20.20A.10–.50 (inland) and § 21.20.40–.50 (coastal)
Coastal use permit application contents (plans/elevations): § 21.50C.30
Example coastal R‑2 standards: § 21.21.40, § 21.21.80; inland R‑2 setbacks/width: § 20.18.60–.80

Sources

Retrieved passages

Del Norte County Zoning Code (section to) High relevance
Del Norte County Zoning Code (chapter is) Medium relevance
Del Norte County Zoning Code (section to) Medium relevance
Del Norte County Zoning Code (Title Information.) Medium relevance
Del Norte County Zoning Code (section a) Medium relevance
Del Norte County Zoning Code (§ E) Medium relevance
Del Norte County Zoning Code (section 20.67.70) Medium relevance
Del Norte County Zoning Code (Section 21.11A.40) Medium relevance
Del Norte County Zoning Code (Section 65913.4) High relevance
Del Norte County Zoning Code (§ 3) Medium relevance
Del Norte County Zoning Code (Section 21.52.20) Medium relevance
Del Norte County Zoning Code (Section 21.35.40) Medium relevance
Del Norte County Zoning Code (title report) Medium relevance
Del Norte County Zoning Code (Section 21.35.50) Medium relevance
Del Norte County Zoning Code (section a) Medium relevance
Del Norte County Zoning Code (chapter and) Medium relevance
Del Norte County Zoning Code (title report) Medium relevance
Del Norte County Zoning Code (chapter apply) Medium relevance
Del Norte County Zoning Code (Section 66424.2) Medium relevance
Del Norte County Zoning Code (Section 21.50.40) Medium relevance
Del Norte County Zoning Code (§ 42) Medium relevance
Del Norte County Zoning Code (Chapter 21.34) Medium relevance
Del Norte County Zoning Code (chapter apply) Medium relevance
Del Norte County Zoning Code (Section 20.48.90) Medium relevance

Cited sections

Official Del Norte County code library

Frequently asked questions

Do I need design review for a new house in the coastal zone?

Possibly. If your home would exceed 25 feet and is visible from designated coastal viewpoints/corridors, you must submit a visual resources analysis and undergo Environmental Review Committee compatibility review (§ 21.50.80). Otherwise, standard coastal permitting applies, but verify if your parcel is within a “highly scenic” overlay that adds Architectural Review Committee input (§ 21.35.50).

What if my coastal parcel is in a “highly scenic” area?

The County can establish an Architectural Review Committee to apply adopted scenic guidelines and make recommendations on siting, architecture, and even sign considerations before permits are issued (§ 21.35.50). Confirm whether guidelines have been adopted for your area.

I’m proposing a fourplex (inland). Is there a design review?

Your project must meet objective design and development standards (e.g., pedestrian connectivity, service screening, adjacency stepbacks). If you seek any deviations from § 20.68, you’ll need a use permit and may undergo a discretionary design review process (§ 20.68.10(C)(3)).

What plan materials count as “design review” for a Planned Community project?

For P‑C districts, the Planning Commission reviews complete development plans, including building elevations (non‑single‑family), and sets tailored standards mirroring analogous districts (§ 20.32.20–.30; coastal § 21.23.60–.70).

Do mobilehome parks require a design check?

Yes. Both inland and coastal mobilehome park chapters require the Planning Commission to review construction/improvement plans and agency approvals at a public meeting before permits can be issued (§ 20.20A.50; § 21.20.50).

Do I need to submit elevations with a coastal use permit?

Often yes. Coastal use permit applications must include a plot plan and, as requested, building plans/elevations or other data needed to evaluate compliance and impacts (§ 21.50C.30).

How do base zoning standards interact with coastal design review?

Base height, setback, and coverage rules still apply (e.g., coastal R‑2 height is 30 ft for primary structures, with standard 25/5/20 setbacks). Coastal design review overlays add visual compatibility obligations without replacing base standards (§ 21.21.40, § 21.21.80; § 21.50.80).

If my mixed‑use project is in a commercial district, do residential design standards apply?

Yes, Title 20’s objective standards apply to all mixed‑use structures that include multi‑unit dwellings (§ 20.68.10(B)). If you need exceptions, expect a use permit and possible discretionary design review (§ 20.68.10(C)(3)).

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