Preliminary Notice Required

    Montana Preliminary Notice Requirements for Contractors [2026]

    MT — MCA § 71-3-535

    Disclaimer: LienFlash is a document preparation platform, not a law firm. The statutory information below is provided for educational purposes and reflects state law as of 2026. Consult a qualified construction attorney licensed in Montana for legal advice specific to your situation.

    Quick Facts

    Notice Required

    Yes

    Notice Type

    Preliminary Notice

    Statute

    MCA § 71-3-535

    Deadline

    20 days from first furnishing

    Delivery Method

    Certified mail or personal delivery

    Key Fact: Montana

    Montana requires a preliminary notice within 20 days of first furnishing labor or materials, following a standard notice framework similar to Arizona and California.

    Understanding Montana Requirements

    Montana requires contractors, subcontractors, and material suppliers to file a Preliminary Notice to preserve their mechanics lien rights. Under MCA § 71-3-535, claimants must send this notice within 20 days from first furnishing to remain eligible to file a lien if payment disputes arise.

    Failing to send a timely Preliminary Notice in Montana can result in the complete loss of your right to file a mechanics lien. This makes compliance with the 20 days from first furnishing deadline one of the most critical administrative tasks for any construction project in the state.

    LienFlash automates the Preliminary Notice process for states where we operate, handling document generation, CASS-certified address verification, and USPS certified mailing. When we launch in Montana, you will be able to generate and send compliant notices in under two minutes.

    LienFlash is Coming to Montana

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