Administrative overview · FIPS 06041
Marin County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Marin County Community Development Agency, Building and Safety Division
For a project in or near Marin County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
(415) 473-6550 (Building and Safety); (415) 473-6560 (24-hour inspection line)
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Marin County Community Development Agency, Building and Safety Division, 3501 Civic Center Drive, Suite 308, San Rafael, CA 94903
Operating hours
Monday-Thursday, 8:00 a.m.-4:00 p.m.; Friday, 8:00 a.m.-12:00 p.m.
Review expectation
Quick online maintenance and minor-improvement permits are issued as quickly as the applicant completes the online application; larger projects requiring plans up front are estimated by the county at 6-8 weeks, depending on collaboration, completeness, and project complexity.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Marin County
Who handles permitting for this jurisdiction?
Marin County Community Development Agency, Building and Safety Division is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact (415) 473-6550 (Building and Safety); (415) 473-6560 (24-hour inspection line).
How long might review take?
Quick online maintenance and minor-improvement permits are issued as quickly as the applicant completes the online application; larger projects requiring plans up front are estimated by the county at 6-8 weeks, depending on collaboration, completeness, and project complexity.
How are inspections scheduled?
Release all permit holds first, then call the automated 24-hour line at (415) 473-6560 or text (877) 410-7201 with the permit number, project address, and three-digit inspection code. Permits beginning with B can also be scheduled through the online portal. The inspector calls or texts between 8:00 and 9:00 a.m. with a two-hour window; have the permit, approved plans, and required documents onsite. Other required fire, Public Works, Planning, or Environmental Health inspections must be scheduled separately.
Which codes and exemptions should I review?
Marin County adopted the 2025 California Building Standards Code effective January 1, 2026, with local Title 19 amendments. The current cycle includes the 2025 California Building/Residential, Mechanical, Plumbing, Electrical, Energy, Existing Building, Green Building, Fire, and Wildland-Urban Interface codes, plus Marin-specific wildfire, seismic, steep-terrain, water, and green-building requirements. Marin County lists exemptions for qualifying one-story detached non-habitable sheds, playhouses, and similar accessory structures up to 120 square feet; rural tool sheds, workshops, or horse stalls up to 300 square feet on parcels of at least one acre; qualifying playground equipment up to 15 feet high; above-ground pools under 24 inches deep and 5,000 gallons; fences up to 7 feet (with Planning review still required above 6 feet in many cases); sidewalks and driveways meeting height/accessibility limits; qualifying agricultural shade-cloth structures; retaining walls up to 4 feet without surcharge or heavy loads; grade-supported tanks up to 5,000 gallons with a 2:1 height-to-width ratio; painting, papering, tiling, carpeting, cabinets, countertops, moveable fixtures and low-profile partitions; and qualifying wall-supported awnings. Zoning, Planning, and trade requirements can still apply to exempt work.