How to file a mechanics lien in Montana
Unpaid for work or materials on a Montana construction project? The notice history belongs in the lien record. Use this guide to organize the filing questions, then check the cited law against your role and project.
MT · PRIVATE CONSTRUCTION CLAIMS
The notice history belongs in the lien record.
Section 71-3-535 specifies a 90-day framework tied to final furnishing or the owner’s notice of completion. Review both events when determining the applicable filing date.
Notices to check before filing
Certify that a copy of the lien was served on the record owner as required by §71-3-534. State that a notice of right to claim a lien was given, or explain why it was not required.
Where and how to file in Montana
File with the county clerk and recorder for the improved real estate.
A filing mistake to avoid
The claim needs the notice explanation and owner-service certification, not merely the unpaid invoice amount.
Prepare your project records
Keep first and last furnishing dates, the notice of right to claim a lien, any completion notice, and owner-service proof.
- Identify who hired you and whether the property is privately owned.
- Confirm your notice obligations and the event that starts each time limit.
- Verify the owner and property description using appropriate records.
- Reconcile invoices, payments, credits, and disputed amounts.
- Keep filing and service receipts, and calendar any enforcement deadline.
After the claim is filed
Filing does not guarantee payment or establish that a disputed claim is valid. Preserve the filed document and delivery evidence. If payment arrives, arrange the required release or satisfaction. If the balance remains unpaid, seek advice about enforcement before its separate deadline expires.
Help with your unpaid construction account
The Credit App offers administrative mechanics lien preparation and a recording attempt for $249. Confirm your state, project, notices, and timing before ordering. The service uses the information you provide; it does not determine legal sufficiency, verify ownership, or represent you in an enforcement action.
Review the lien service · Compare service fees · Ask support about your project
Sources for Montana lien requirements
Montana Code §71-3-535 (2025 text, Justia)
Sources checked September 23, 2026. This is a general guide to private construction claims, not a calculation of your deadline or legal advice. The cited edition and later amendments must be checked for your project.
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