OK · Mechanics Lien Law
Oklahoma Mechanics Lien Law: Deadlines, Notices & Filing Guide
Oklahoma mechanics liens must be recorded within 90 to 120 days of last furnishing depending on contractual tier, under 42 O.S. § 142.4, with public bond claims governed by 61 O.S. § 1. The $10,000 pre-lien notice threshold for commercial projects is a key trigger to watch.
Oklahoma mechanics lien deadlines at a glance
Subcontractors and suppliers on private commercial projects with claims exceeding $10,000 must furnish a pre-lien notice within 75 days of last furnishing. Below that dollar threshold, the pre-lien notice obligation does not apply, but claimants should still confirm their contract amount carefully before skipping it.
Sub-tier claimants such as subcontractors and suppliers must record their lien within 90 days of last furnishing under 42 O.S. § 142.4, while claimants in direct contract with the owner have a longer four-month (120-day) window from the same trigger date.
An Oklahoma foreclosure lawsuit must be commenced within one year, or 365 days, of the date the mechanics lien was filed.
Subcontractors and suppliers not in direct contract with the prime contractor on an Oklahoma public project must provide written notice of their bond claim within 90 days of last furnishing labor or materials.
Primary statute
42 O.S. § 142.4 · 61 O.S. § 1
Who can file a mechanics lien in Oklahoma?
Oklahoma extends lien rights to contractors, subcontractors, sub-subcontractors, material suppliers, and qualifying design professionals who furnished labor, materials, or services to the improvement.
Overview of Oklahoma lien practice
Oklahoma's lien scheme distinguishes claimants by their contractual position more explicitly than many other states. Sub-tier claimants — subcontractors and suppliers without a direct contract with the owner — must record within 90 days of last furnishing, while those contracting directly with the owner get a longer four-month window under 42 O.S. § 142.4. Commercial project claimants with exposure above $10,000 carry an added obligation: a pre-lien notice within 75 days of last furnishing, a threshold that makes contract value tracking as important as furnishing dates. Once a lien is recorded, the claimant has only one year to commence a foreclosure lawsuit, a relatively short enforcement window compared to some neighboring states. Public project work runs on its own 90-day bond claim notice track under 61 O.S. § 1 for claimants outside privity with the prime contractor. Across all of these paths, claimants should record against the correct owner of record, confirm the county where the property sits, and remember that federal property cannot be reached through a private mechanics lien.
Common pitfalls on Oklahoma projects
Confusing the 90-day and 120-day deadlines
Sub-tier claimants have 90 days to record from last furnishing, while claimants in direct contract with the owner get 120 days, so confirming contractual tier matters before calendaring.
Missing the $10,000 pre-lien threshold
Commercial project claims exceeding $10,000 require a pre-lien notice within 75 days of last furnishing, and overlooking this dollar threshold can jeopardize the claim.
Waiting too long to sue
A foreclosure lawsuit must be filed within one year of the lien's filing date, a shorter enforcement window than many claimants expect.
Skipping public bond claim notice
Claimants not in direct contract with the prime contractor on a public project must give written bond claim notice within 90 days of last furnishing.
Oklahoma mechanics lien FAQs
When must a mechanics lien be recorded in Oklahoma?
Sub-tier claimants must file within 90 days of last furnishing, while claimants in direct contract with the owner have four months (120 days), both under 42 O.S. § 142.4.
Is preliminary notice required in Oklahoma?
Subcontractors and suppliers on private commercial projects with claims exceeding $10,000 must furnish a pre-lien notice within 75 days of last furnishing.
How long do I have to enforce a lien in Oklahoma?
A foreclosure lawsuit must be commenced within one year, or 365 days, of the mechanics lien's filing date.
What about Oklahoma public projects?
Subcontractors and suppliers not in direct contract with the prime contractor must provide written notice of their bond claim within 90 days of last furnishing.
Filing a Oklahoma mechanics lien or bond claim?
My Lien Lawyer coordinates mechanics lien filings, bond claims, and construction collections in Oklahoma — directly or through our vetted local-counsel network. The first call is free.
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This page is general information and not legal advice. Statutes change — verify against the official text linked above.