Pre-Filing Notice Only

    Missouri Preliminary Notice Requirements for Contractors [2026]

    MO — Mo. Rev. Stat. § 429.010

    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 Missouri for legal advice specific to your situation.

    Quick Facts

    Notice Required

    Yes

    Notice Type

    Notice of Intent to File Lien

    Statute

    Mo. Rev. Stat. § 429.010

    Deadline

    10 days before filing lien

    Delivery Method

    Certified mail

    Key Fact: Missouri

    Missouri does not require a project-start preliminary notice. A 10-day notice of intent must be sent before a mechanics lien can be filed.

    Understanding Missouri Requirements

    Missouri does not require a preliminary notice at the start of a project. Instead, under Mo. Rev. Stat. § 429.010, claimants must send a Notice of Intent to File Lien 10 days before filing lien to preserve their right to record a mechanics lien.

    While Missouri does not mandate a project-start notice, the pre-filing notice requirement is still a critical step. Failing to send the Notice of Intent to File Lien within the required timeframe will prevent you from recording a valid mechanics lien.

    LienFlash is expanding to cover Missouri's pre-filing notice requirements. Our platform will automate the notice generation and delivery process, ensuring you never miss the 10 days before filing lien window.

    LienFlash is Coming to Missouri

    Join the waitlist to be notified when we launch automated preliminary notice filing in Missouri.

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