5 rules for unincorporated Mono County, California.
Verified from official government sources
Unincorporated Mono County allows ADUs and junior ADUs in any designation permitting single-family homes under General Plan Land Use Element Chapter 16. Detached one-bedroom ADUs may reach 850 sq ft and two-bedroom ADUs 1,000 sq ft by building permit, with four-foot side/rear setbacks.
Unincorporated Mono County has no shed-specific chapter; sheds and accessory structures must meet the height, setback, lot coverage, and snow-storage standards of the underlying land use designation. The California Building Code generally exempts one-story sheds of 120 sq ft or less from a building permit, but zoning setbacks still apply.
Unincorporated Mono County expressly allows converting an existing garage into an accessory dwelling unit. General Plan Section 16.050.G requires no setback for an existing garage converted to an ADU, and conversions inside existing structures are approved ministerially by building permit under Section 16.040.A.
Unincorporated Mono County has no carport-specific ordinance; a carport is treated as a residential accessory structure that must meet the height, setback, lot coverage, and snow-storage standards of the underlying land use designation. ADU parking requirements appear in General Plan Section 16.050.D.
Unincorporated Mono County has no separate tiny-home ordinance; a permanent tiny home on a foundation is typically permitted as an accessory dwelling unit under General Plan Chapter 16, which allows units as small as the California Building Code efficiency-unit minimum. A movable tiny home on wheels is regulated separately as a vehicle/recreational structure.
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