Missouri prescribes a single statutory form (RSMo § 429.016(27)): the unconditional final lien waiver for residential real property, reproduced here word for word. For commercial projects and progress payments, Missouri law prescribes no form — the generic templates apply there.
Only at the end of a residential job, when you have been paid in full. The form is complete, absolute, and — under § 429.016(29) — enforceable even if the promised payment never arrives. If the money has not actually reached you, do not sign it: use a conditional waiver instead. On commercial projects, Missouri has no prescribed form at all.
Yes, but only one: Missouri Revised Statutes § 429.016(27) prescribes the Unconditional Final Lien Waiver for Residential Real Property, and that waiver is only valid if it substantially follows the statutory form. For commercial projects and for progress payments, Missouri prescribes no form, so a clear written waiver is used.
No. Section 429.016 applies only to mechanic's liens asserted against residential real property, defined in subsection 2 as parcels used for residential structures of four units or less, condos, townhouses, and cooperatives. On commercial jobs, no statutory waiver form exists in Missouri.
No notarization is required for the § 429.016(27) waiver itself: the signer and date information must simply be typed or legibly printed next to the signature. A different document, the Notice of Rights under § 429.016(8), must be notarized — do not confuse the two.
No. Missouri Revised Statutes § 429.005 makes any agreement to waive lien rights in anticipation of and in consideration for the awarding of a contract against public policy and unenforceable. The same section expressly allows contractual provisions that require lien waivers as a condition for payment.
Yes. Section 429.016(29) states that an unconditional, final mechanic's lien waiver meeting the section's requirements is valid and enforceable even if the claimant never received the promised payment. Sign it only after the funds have actually been received, or use a conditional waiver instead.
Lien waiver forms for nearby states: Illinois, Kansas and Oklahoma. ← Back to all states · Which states require a statutory lien waiver form? (reference table)
This tool is not a law firm and does not provide legal advice. Statutory text verified 2026-09-09 against the official Missouri Revisor of Statutes site. Not a substitute for a licensed Missouri attorney.