Dorris — Nonconforming Uses

Last reviewed: July 3, 2026

Overview

This page explains how the City of Dorris treats nonconforming uses, nonconforming structures, and nonconforming parcels under the Dorris Zoning Code (Title 18). The primary rules are collected in Chapter 18.76, which sets (1) how legally established nonconformities may continue, (2) when they may be repaired, modified, or rebuilt, and (3) when nonconforming rights terminate. See the city's zoning overview for context and related rules at Dorris zoning & planning overview.

Note: this page sticks to what the Dorris ordinance itself says. For design or building-code requirements, check the linked pages (for example, the California Building Standards Code).

How Dorris treats nonconformities (the controlling rules)

• The city’s Nonconforming chapter is Chapter 18.76 (title: Nonconforming Structures, Uses, and Parcels). The chapter states its purpose and basic approach in § 18.76.010 (purpose/applicability) and the detailed rules in § 18.76.020–.060. The code intends to allow lawful pre-existing uses/structures to continue under limits, and to permit reconstruction after disaster while generally prohibiting expansions except when expressly authorized.

Key Dorris code rules (plain-English summaries with code citations)

• A lawful nonconforming use may continue in perpetuity, and may be sold or transferred, but it may not be enlarged, intensified, or made to occupy a larger area than it lawfully occupied before it became nonconforming — § 18.76.020(A).
• A nonconforming structure may be maintained and repaired; safety repairs and structural alterations to improve safety or reduce fire hazards are allowed; routine “replacement” that expands the nonconformity is not permitted without approval — § 18.76.020(B).
• A legal nonconforming use may be modified or expanded only if a use permit is granted under Chapter 18.80 — § 18.76.030(A).
• Additions/enlargements to a nonconforming structure are allowed only when the changes conform to the title and do not expand the extent of nonconformity or create new nonconformities — § 18.76.030(B).
• If a nonconforming structure (or a structure occupied by a nonconforming use) is involuntarily damaged/destroyed, it may be repaired or rebuilt in the same manner if restoration is started within one (1) year and diligently pursued — § 18.76.040.
• A nonconforming use that is discontinued for a continuous period of one (1) year or more loses its nonconforming status (the code explains what counts as evidence of abandonment) — § 18.76.050.
• A parcel of record that is substandard (smaller area/width than current district requirements) may still be used as a building site provided there are no adjoining parcels under the same ownership and a site plan is approved; the city administrator may approve administratively, with appeal to the city council — § 18.76.060.

Chapter 18.72 (Signs) treats signs connected to legal nonconforming uses specifically, including replacement/removal timelines for certain nonconforming sign types — § 18.72.090.

District-by-district breakdown (how nonconforming rules interact with each zoning district)

Below are the common districts in the Dorris code. For each district I summarize its purpose, typical permitted uses and the key dimensional standards you will most likely need to compare against when evaluating a nonconformity. In all districts the Chapter 18.76 rules above apply; where a district has specific dimensional rules cited below, use those to check whether a structure/use is nonconforming.

Note: first mention of the city’s zoning map and district rules is linked at Dorris Zoning.

R-1 (Low Density Residential)

• Purpose: neighborhood-scale single-family residential areas.
• Typical permitted uses: single-family residential, residential care homes, farmworker housing, supportive housing, transitional housing; accessory dwelling units (ADUs) allowed under Chapter 18.104.
• Key dimensional standards (development table): min parcel size 6,000 sq ft, front setback 20 ft, max building height 35 ft, side/rear set‑backs and lot width in § 18.20.050–060. Check setbacks and lot coverage in the Residential development standards link when evaluating nonconformity.
• How nonconforming rules apply: a pre-existing use or building in R-1 keeps nonconforming rights per § 18.76.020–.050; expansions that increase the nonconforming footprint require a use permit per § 18.76.030(A) (and may involve review under Dorris Design Review).

R-2 (Medium Density Residential) and R-3 (High Density Residential)

• Purpose & uses: multi-unit residential types (duplexes, multifamily, dormitories, etc.) and accessory uses; ADUs permitted. See § 18.24 and § 18.28 for permitted uses and standards.
• Key standards: parcel sizes/widths and max heights differ (e.g., R-3 height up to 45 ft, coverage up to 75% in R-3). When a structure predates current setbacks or height, Chapter 18.76 controls the ability to maintain or repair it.

M-U (Mixed Use)

• Purpose: centrally located mixed residential + nonresidential uses. § 18.32 covers uses and development standards (max height 45 ft, lot coverage 75%, setbacks per § 18.32.060).
• Nonconformities: vertical mixed-use buildings or mixed uses that became nonconforming must follow § 18.76 for maintenance, and any expansion of a nonconforming commercial or residential use requires the use‑permit pathway under § 18.76.030(A) and Chapter 18.80 procedures.

C-1 (Community Commercial) and C-2 (General Commercial)

• Purpose: neighborhood commercial (C-1) and highway/commercial services along US‑97 (C-2). See § 18.36 and § 18.40 for lists of permitted uses (retail, services, food, offices, hotels in C‑2).
• Key standards: setbacks, lot coverage and parking requirements are set in each chapter and in the Dorris Parking chapter; nonconforming commercial uses and signs are specifically discussed in § 18.72.090 (signs) and generally subject to Chapter 18.76 rules.

M (Manufacturing / Industrial)

• Purpose & uses: heavier commercial/manufacturing uses consistent with the Industrial land‑use designation (see § 17.44 — Manufacturing, M). Typical permitted uses include processing, equipment yards, storage, light manufacturing.
• Key standards: minimum lot sizes, setbacks and coverage are in § 17.44.050–.070; nonconforming industrial uses follow the same maintenance/repair/expansion controls of § 18.76 (safety repairs allowed; enlargements restricted unless the city issues required permits).

P-A (Public Agency) and P-D (Planned Development) and RPD (Residential Planned Development)

• Purpose/uses: public services, public facilities (P‑A, § 18.52); flexible master-planned development rules (P‑D, § 18.56) and RPD rules (§ 18.60) set district-specific size/coverage and setbacks.
• Nonconformities: Chapter 18.76 governs continuation, repair, and abandonment for pre-existing public or planned‑development uses; when a planned development has site-specific standards, any repair or modification must also meet the P‑D/RPD approved plan and the site‑plan rules (see § 18.56 and § 18.60) — verify with the city administrator if the P‑D plan imposes restrictions beyond Title 18.

Most decision‑relevant standards and permitted‑use references

Checklist — what an applicant must satisfy to preserve or change a nonconforming use/structure

• Demonstrate that the use or structure was lawfully established before the current rule that now prohibits/limits it (document date of establishment, permits, business records) — per § 18.76.020(A).
• If requesting modification/expansion of a nonconforming use: prepare a use permit application consistent with Chapter 18.80, including site plan and findings — § 18.76.030(A) and Chapter 18.80.
• If making structural repairs or alterations: show work is maintenance/safety-related or that changes do not increase nonconformity per § 18.76.020(B) and § 18.76.030(B).
• If rebuilding after damage: show reconstruction will begin within one year and include a diligent completion schedule — § 18.76.040.
• If the parcel is undersized: submit a site plan per § 18.84.020 and apply under § 18.76.060 (city administrator review; appeal to city council if denied). See Dorris Development Standards for dimensional checks.
• For nonconforming signs: verify whether the sign must be altered or removed within the staged deadlines in § 18.72.090(B).

(For permit forms, fees and exact submittal lists see the city’s planning office and the Use Permits and Variances chapter.)

Risks & Ambiguities

Plain‑English summary

If your use or building in Dorris was legal before the current zoning rules changed, you may generally keep operating or maintain the structure, but you cannot enlarge or intensify the nonconforming activity without approval, you must rebuild within one year after disaster to keep rights, and if the use stops for more than one year you lose the protection. The controlling rules are in Chapter 18.76 (Nonconforming Uses, Structures, and Parcels) and the related procedural chapters for permits.

Information Gaps

• The Dorris materials provided do not include specific administrative forms, fee schedules, or the city’s literal site‑plan checklist for nonconforming‑parcel approvals (these are typically in the planning counter or on the city website). Not found in retrieved materials.
• Practical interpretations (e.g., what level of evidence the city typically accepts for “continuous operation” under § 18.76.050) are administrative practice matters and not specified in Title 18. Verify with the jurisdiction.

Source References

• City of Dorris Zoning Code — Chapter 18.76: Nonconforming Structures, Uses, and Parcels; see § 18.76.010–.060 for the rules summarized here.
• City of Dorris Zoning Code — Title 18 (table of contents and district chapters, e.g., § 18.20 R-1, § 18.24 R-2, § 18.28 R-3, § 18.32 M-U, § 18.36 C-1, § 18.40 C-2, § 18.44 M, § 18.52 P-A, § 18.56 P-D, § 18.60 RPD).
• City of Dorris Zoning Code — § 18.72.090 Nonconforming signs and uses (sign-specific rules and staged removal/alteration timelines).
• Use‐permit/variance procedures referenced by the nonconforming‑use expansion rule: Chapter 18.80 (Use Permits and Variances).
• Dorris Development Standards and setbacks cited across district chapters (see each district chapter above for dimensional tables) — use the Dorris Development Standards page for quick reference.
• For overlaps with state ADU and zoning nonconformance rules (context only, not a substitute for Dorris policy): 2025 California ADU handbook (state guidance on nonconforming conditions and ADUs).

Additional internal links that may be useful when working through a nonconforming issue:

• For the zoning map and general program: Dorris Zoning.
• For development standards and setbacks (to check if a structure is nonconforming): Dorris Development Standards.
• For parking rules often relevant when changing a use: Dorris Parking.
• For design/concept review that can accompany a use‑permit request: Dorris Design Review.
• If overlays might affect permitted changes (for example historic overlays): Dorris Overlay Districts.
• If the property contains or proposes an accessory dwelling unit: Dorris ADUs.
• For building‑code (life/safety) repairs or structural work: California Building Standards Code.

(Links above point to the city menus for those topics — use them for filing forms and procedural details.)

Retrieved passages

• CBC § 18.84.020 (chapter becomes) High relevance show source text
• Dorris Zoning Code (title may) High relevance show source text
• CBC § 170 (chapter is) High relevance show source text
• Dorris Zoning Code (chapter may) Medium relevance show source text
• Dorris Zoning Code (section and) Medium relevance show source text
• CBC § 66314 (§ 66314) Medium relevance show source text
• Dorris Zoning Code (chapter shall) Medium relevance show source text
• Dorris Zoning Code (Chapter 18.100) Medium relevance show source text
• Dorris Zoning Code (TITLE 18) Medium relevance show source text
• CBC § 202 (section 202) Medium relevance show source text
• Dorris Zoning Code (Section 18.72.150) Medium relevance show source text
• Dorris Zoning Code (chapter or) Medium relevance show source text
• CBC § 18.84.130 (Chapter 18.100) Medium relevance show source text
• CBC § 100 (Chapter 18.68) Medium relevance show source text
• CBC § 18.84.190 (Section 18.84.190) Medium relevance show source text

Cited sections

• City of Dorris Zoning Code — **Chapter 18.76: Nonconforming Structures, Uses, and Parcels**; see **§ 18.76.010–.060** for the rules summarized here. (Chapter 18.76)
• City of Dorris Zoning Code — Title 18 (table of contents and district chapters, e.g., **§ 18.20 R-1**, **§ 18.24 R-2**, **§ 18.28 R-3**, **§ 18.32 M-U**, **§ 18.36 C-1**, **§ 18.40 C-2**, **§ 18.44 M**, **§ 18.52 P-A**, **§ 18.56 P-D**, **§ 18.60 RPD**). (Title 18)
• City of Dorris Zoning Code — **§ 18.72.090 Nonconforming signs and uses** (sign-specific rules and staged removal/alteration timelines). (§ 18.72.090)
• Use‐permit/variance procedures referenced by the nonconforming‑use expansion rule: **Chapter 18.80** (Use Permits and Variances). (Chapter 18.80)
• Dorris Development Standards and setbacks cited across district chapters (see each district chapter above for dimensional tables) — use the Dorris Development Standards page for quick reference. (chapter above)
• For overlaps with state ADU and zoning nonconformance rules (context only, not a substitute for Dorris policy): 2025 California ADU handbook (state guidance on nonconforming conditions and ADUs).
• For the zoning map and general program: Dorris Zoning.
• For development standards and setbacks (to check if a structure is nonconforming): Dorris Development Standards.
• For parking rules often relevant when changing a use: Dorris Parking.
• For design/concept review that can accompany a use‑permit request: Dorris Design Review.
• If overlays might affect permitted changes (for example historic overlays): Dorris Overlay Districts.
• If the property contains or proposes an accessory dwelling unit: Dorris ADUs.
• For building‑code (life/safety) repairs or structural work: California Building Standards Code.
• Dorris_ZoningCode.md
• 2025 California ADU handbook.md