Monterey County, CA Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Monterey County, CA, 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
- Permit-exempt shed size
- 240 sq ft or less, no utilities
- Triggers building permit
- Over 240 sq ft or any electrical/plumbing/mechanical
- Alley setback
- Not within 6 ft of alley right-of-way
- Zoning still applies
- Yes - setbacks & design control under Title 21
- Planning contact
- Monterey County Planning Services 831-755-5025
Summary
Small one-story sheds in unincorporated Monterey County (240 sq ft or less, no utilities) generally do not need a building permit, but Planning rules such as zoning setbacks and design control still apply. Larger sheds or any structure with electrical, plumbing or mechanical work require a building permit.
A construction permit is not required for a one-story detached structure accessory to detached one and two family dwellings used as tool and storage sheds, playhouses and similar uses, provided the floor area does not exceed 240 square feet and the structure does not contain any electrical, plumbing or mechanical work.
Full Breakdown
Under the California Building Code as administered by Monterey County, a one-story detached accessory structure used as a tool/storage shed, playhouse or similar use does not require a building permit if its floor area does not exceed 240 square feet, it contains no electrical, plumbing or mechanical work, and it is not used to store hazardous materials or vehicles. A structure larger than 240 square feet, or any size that contains utilities, requires a building permit. Even when a building permit is not required, Planning regulations under Title 21 (Zoning) still apply: zoning-district setbacks, height limits, and design-control review. Detached accessory structures with access from an alley must not be located within 6 feet of the alley right-of-way. Setback distances vary by zoning district, so property owners should confirm the required side, rear and front setbacks for their specific parcel with Monterey County Planning Services (831-755-5025). Resource Conservation (RC) districts allow administrative reduction of accessory-structure setbacks under section 21.36.040.
Violations & Fines
Building a shed over 240 sq ft, or any shed with utilities, without a permit, or placing a shed inside the required setback, can trigger Monterey County code enforcement, stop-work orders and a requirement to permit, relocate or remove the structure.
Frequently Asked Questions
Do I need a permit for a shed in unincorporated Monterey County?
How close to the property line can my shed be?
Sources & Official References
Other rules in Monterey County
How Monterey County compares: Shed Permit Requirements by City·California rules heatmap·Compare Monterey County to another location·View the California accessory structures overview
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