Storm Related Road Closures for Unincorporated Marin County: - Bolinas Road is closed from Azalea Hill to HWY 1 in West Marin due to debris on roadway. - Platform Bridge Road is closed from Pt Reyes Petaluma Road to Sir Francis Drake Boulevard  in West Marin due to localized flooding.

Event encroachment permit

About

If you're hosting a special event in Marin County and plan to use a County-maintained road, sidewalk, or shoulder (known as the "County right-of-way"), you’ll need an event encroachment permit.

This includes:

  • Closing a road
  • Performing traffic control measures and placing signage
  • Placing event-related items (e.g., tents, tables, equipment) in the County right-of-way

Examples of events requiring this permit include parades, fun runs, block parties, or bike rides.

Why is this permit required?

  • Public safety: Ensures proper traffic control and reduces risks to the public.
  • Emergency preparedness: Keeps local first responders informed in case of emergencies.
  • Legal requirement: Per Marin County Code 13.12.010, a permit is required for activities affecting County-maintained roads or the right-of-way.

Step-by-step instructions to apply

Here’s how to apply for an Event Encroachment Permit:

  1. Verify your event location
    • Use MarinMap to ensure your event takes place in unincorporated Marin and involves a County-maintained road, sidewalk or shoulder. If your event falls outside County jurisdiction, check the FAQs for guidance
  2. Understand permit requirements
    • Applicants must comply with all General Provisions and any special conditions established by the County of Marin.Be prepared to pass all required inspections before, during, and after the event.
  3. Schedule a Pre-Event Meeting
    • At least 10 business days before your event, meet with a County of Marin Department of Public Works (DPW) inspector to review traffic control plans, agency approvals, and inspection requirements.
    • Your permit will not be issued without this meeting.
  4. Prepare and submit required documents
    • Site Map: Show where roads will close, event routes, and equipment staging areas.
    • Traffic Control Plan: Include details for road closures, signage, and any traffic control measures.
    • Insurance: Provide a certificate of liability insurance (at least $1 million per occurrence, $2 million aggregate) naming Marin County as the certificate holder. For neighborhood events, contact your homeowner's insurance for event coverage.
    • Special Event Agency Form: If 100+ participants or spectators are expected, complete and submit this form.
  5. Pay the fees
    • Application fees starts at $160.89. Additional fees for reviews and inspections may apply.
  6. Submit Your application early
    • Submit at least 6 weeks before your event, but no more than 3 months ahead.
    • Applications with all documents and insurance are typically processed within 10 business days but could take longer if revisions are needed.

Need to revise your permit?

If you need to make changes to your approved permit, submit a Revision Request below.

Event encroachment permit FAQs

Who can I contact if I have questions?

For questions, contact DPW’s  Land Development Division.

What if I don’t have event insurance?

For neighborhood events, check with your homeowner’s insurance or homeowners association for event coverage options.

What’s the purpose of the pre-event meeting?

The meeting ensures your traffic control measures are safe and approved and allows the County to review your plans.

Can I submit my application less than 6 weeks in advance?

While it’s possible, submitting early helps avoid delays. Processing time can take longer if revisions or extra approvals are required.

How much does the event encroachment permit cost?

The minimum fee is $160.89, but additional costs may apply depending on the review and inspections.

What if my event isn’t under County jurisdiction?

If your event takes place in a city or town within Marin County, or on a state highway, you’ll need to contact the local city or town government or Caltrans for their permitting requirements. Use MarinMap to confirm the jurisdiction.

Do I need a permit for events on private property?

No, an event encroachment permit is only for events in County-maintained areas (roads, sidewalks, etc.).

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