Grand Junction, CO Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Grand Junction, CO, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.
Key Facts
- Size cap (R-2R and above)
- 75% of principal structure's square footage
- Size cap (R-R/R-ER/R-1R)
- 75% of house or 10% of lot, greater
- Placement rule
- No front yard or corner exterior side yard
- Ag exemption
- Farm buildings in R-R/R-ER/R-1R exempt
- Civil penalty
- $100-$1,000 per offense, up to $10,000
- Governing code
- GJMC § 21.04.040(c)
Summary
In the City of Grand Junction, backyard sheds and other accessory structures are capped at 75% of the principal home's square footage in higher-density residential zones (R-2R and above), or 75% of the house or 10% of the lot in lower-density zones, whichever is greater. Sheds also cannot sit in a front yard or a corner lot's exterior side yard without an Administrative Adjustment.
In all zone districts, accessory structures shall not be located in the front yard or the exterior side yard of a corner lot unless approved by an Administrative Adjustment in accordance with GJMC § 21.02.040(c). ... (i) In Residential zone districts with a density of two units per acre or higher (R-2R and above), the size of accessory structures, except accessory dwelling units, will be limited to a maximum of 75% of the square footage of the principal structure. Accessory dwelling units are subject to the requirements in GJMC § 21.04.040(e)(1)(i). (ii) For all other Residential zone districts, accessory structures will be allowed up to a maximum of 75% of the square footage of the principal structure or 10% of the parcel size, whichever is greater. In the R-R, R-ER, and R-1R zone districts, accessory structures incidental to the principal uses categorized as Agriculture and Animal Services in Table 21.04-1: Principal Use Table and used for agricultural activities shall be exempt from these size regulations.
Full Breakdown
Grand Junction's zoning code regulates accessory structures such as sheds, detached garages, and workshops under GJMC § 21.04.040(c), General Standards for Accessory Uses and Structures. A shed or other accessory building may only be built or used while the principal house on the lot is also in use, and it must sit on the same lot and under the same ownership as the principal structure. Placement is restricted: accessory structures cannot go in the front yard or the exterior side yard of a corner lot in the City of Grand Junction unless the Director approves an Administrative Adjustment under GJMC § 21.02.040(c); accessory dwelling units are exempt from that placement rule.
Size is capped by zone density. In R-2R and higher-density residential districts, a shed or other accessory structure, other than an ADU, cannot exceed 75% of the principal structure's square footage. In lower-density districts, R-R, R-ER, and R-1R, an accessory structure can reach 75% of the house's footprint or 10% of the parcel size, whichever is larger, and the code exempts agricultural buildings tied to Agriculture and Animal Services uses from this size cap entirely in those three zones. Every accessory structure must also be designed to look compatible with the neighborhood and with the principal building's height, scale, mass, bulk, architectural features, and materials. Community Development's Planning division reviews accessory structure applications for compliance with these standards before a building permit is issued.
Violations & Fines
Grand Junction treats an oversized or misplaced accessory structure as a zoning violation under GJMC Chapter 21.13. The Director can issue a stop-work order, deny or revoke permits, and refer the case to Municipal Court, where a noncompliant shed carries a civil penalty of $100 to $1,000 per offense, up to $10,000 total, with each day of noncompliance a separate violation; criminal prosecution can add up to a $1,000 fine or a year in jail under § 21.13.060.
Frequently Asked Questions
Can I put a shed in my front yard in Grand Junction?
How big can a shed be on my Grand Junction property?
What happens if my shed violates the size or setback rule?
Sources & Official References
Other rules in Grand Junction
How Grand Junction compares: Shed Permit Requirements by City·Compare Grand Junction to another location·View the Colorado accessory structures overview
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