Colusa County — Variances and Exceptions

Last reviewed: July 6, 2026

Overview

This page explains how “variances” and similar “exceptions” are handled for projects in the unincorporated areas of Colusa County. Variances are case-by-case relief from otherwise applicable development standards; they are not a way to allow uses that zoning prohibits. Important: the ordinance pages retrieved for this research appear to be from the City of Colusa, not the County. County-specific variance procedures, findings, and district standards were not present in the retrieved materials. Not found in retrieved materials. Verify with the jurisdiction.

The single most important rule: A variance changes how a standard applies to a specific property; it does not authorize a use that is otherwise prohibited. Not found in retrieved materials. Verify with the jurisdiction.

What this page covers (unincorporated areas)

• What a variance or exception can and cannot do
• Typical submittal items and decision criteria
• How “exceptions” sometimes appear in code (e.g., height exceptions, floodplain relief)
• Cross-references to related topics like development standards, parking, design review, overlay districts, and signage

Variances in unincorporated Colusa County

• Authority and purpose: A variance allows limited relief from dimensional and similar development standards when strict application would cause special hardship due to property-specific conditions. Not found in retrieved materials. Verify with the jurisdiction.
• What can be varied: Generally, numeric or locational standards (e.g., setbacks, height, lot coverage, yard design), not permitted uses. See also Colusa County Development Standards. Not found in retrieved materials.
• Typical findings: California practice requires findings tied to special circumstances of the property, no special privilege, and consistency with the code’s purpose. County-specific findings were not found in the retrieved materials. Not found in retrieved materials. Verify with the jurisdiction.
• Procedure and hearing body: County-specific application steps, noticing, hearing body, and appeal rights were not found in the retrieved materials. Not found in retrieved materials. Verify with the jurisdiction.

Floodplain-related variances (context from retrieved materials)

The retrieved code text is from the City of Colusa’s floodplain regulations. It is not controlling in the unincorporated County, but it shows how local floodplain variances are commonly structured. For example, the city’s code:

• Limits variances in mapped floodways where an increase in base flood levels would result (§ 39.06).
• Requires “minimum necessary” relief and findings of good cause and exceptional hardship (§ 39.06).
• Details factors for decision (public safety, access during flood, compatibility with development, etc.) and requires recorded notice if a structure is built below base flood elevation (§ 39.06).

These examples are illustrative only; for unincorporated Colusa County, confirm the County’s adopted floodplain management chapter and its variance process. Not found in retrieved materials. Verify with the jurisdiction.

“Exceptions” and administrative relief

Many zoning codes include narrow “exceptions” to standards (e.g., architectural projections above height limits, utilities above height caps, or yard encroachments). The retrieved city code includes a “Height exceptions” clause allowing specific structures (towers, spires, tanks) to exceed base height up to a stated increment, sometimes with additional approval (§ 32.08). This is city text and not controlling for unincorporated County; confirm whether the County provides similar exceptions and what approvals are required.

Related topics that often intersect variance requests:

• Colusa County Zoning and Colusa County Land Use
• Colusa County Design Review
• Colusa County Nonconforming Uses
• California Building Standards Code (construction standards; separate from zoning)
• State housing relief tools (e.g., density bonus, SB 35, ADUs) live under California housing laws and California ADU law; these are separate from variances.

Zoning districts in unincorporated Colusa County

District names, purposes, and dimensional standards for the County’s base and overlay districts were not found in the retrieved materials. This page therefore cannot provide a district-by-district variance “sensitivity” breakdown without the County code text. Not found in retrieved materials. Verify with the jurisdiction and see Colusa County Zoning and Colusa County Overlay Districts.

Decision-relevant standards and process (what to look for in the County code)

The table below shows the most important variance/exception elements to confirm in the Colusa County code before you apply.

Checklist

• Confirm your site’s base zoning district and any overlay districts in the unincorporated area. Not found in retrieved materials.
• Identify the exact development standard you need relief from (e.g., a front setback in development standards or a stall count in parking).
• Document property-specific conditions causing hardship (e.g., parcel shape, topography, environmental constraints). Not found in retrieved materials.
• Prepare a findings letter addressing the County’s required variance findings. Not found in retrieved materials.
• Assemble a complete plan set and any technical studies (e.g., flood analysis if within a mapped flood area). Not found in retrieved materials.
• Verify the hearing body, noticing requirements, and appeal process with County Planning. Not found in retrieved materials.
• If located in a historic or scenic area, confirm if other approvals (e.g., historic preservation or design review) apply alongside the variance. Not found in retrieved materials.

Risks & Ambiguities

Plain-English Summary

If you’re building in unincorporated Colusa County and a strict standard (like a setback) makes your project unworkable due to your lot’s unique shape or terrain, you may be able to request a variance. The County must have specific findings and a hearing process—ask Planning for the County’s current variance chapter and forms. Don’t use a variance to try to legalize a prohibited use, and if you’re in a flood area, expect tougher scrutiny. Not found in retrieved materials. Verify with the jurisdiction.

Source References

• City of Colusa floodplain variance criteria (illustrative only; not controlling for the County): § 39.06 variance nature, procedures, and conditions; factors and notice requirements.
• City of Colusa height exceptions (illustrative only; not controlling for the County): § 32.08.
• Colusa County code provisions specifically governing variances in unincorporated areas: Not found in retrieved materials. Verify with the jurisdiction.

Retrieved passages

• Colusa County Zoning Code (Article 34.) High relevance show source text
• Colusa County Zoning Code (section 39.02) High relevance show source text
• Colusa County Zoning Code (section 39.02) High relevance show source text
• Colusa County Zoning Code High relevance show source text
• Colusa County Zoning Code (§ 2) Medium relevance show source text
• Colusa County Zoning Code (section 39.05) Medium relevance show source text
• CBC § 34.01 (Section 34.01) Medium relevance show source text
• Colusa County Zoning Code (§ 1) Medium relevance show source text
• Colusa County Zoning Code (§ 1) Medium relevance show source text

Cited sections

• City of Colusa floodplain variance criteria (illustrative only; not controlling for the County): § 39.06 variance nature, procedures, and conditions; factors and notice requirements. (§ 39.06)
• City of Colusa height exceptions (illustrative only; not controlling for the County): § 32.08. (§ 32.08.)
• Colusa County code provisions specifically governing variances in unincorporated areas: Not found in retrieved materials. Verify with the jurisdiction.
• ColusaCounty_ZoningCode.md

• Official Colusa County code library