Shed permit rules in Martinez, CA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Accessory structures in Martinez require building permits unless very small, non-habitable, and under ~120 sq ft with no utilities. Structures must comply with setback requirements (typically 5 ft from side/rear property lines in residential zones). Maximum height is governed by Title 22 zoning code.
Martinez building code typically exempts small accessory structures under 120 square feet from building permits, provided they are single-story, not for habitation, and meet setback requirements. Structures over 120 sq ft require building permits. All sheds must comply with zoning setbacks from property lines (typically 3 to 5 feet). Electrical connections to sheds require electrical permits. Sheds cannot be used as living quarters. HOAs may impose additional restrictions on size, placement, and appearance. Pre-fabricated sheds still must meet setback requirements.
Unpermitted structure: retroactive permit with penalty. Non-compliant setback: modification or removal. Habitation violation: immediate correction.
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Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle shed rules.
See how Martinez's shed rules rules stack up against other locations.
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