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Mechanics Lien Deadlines in Oklahoma

In Oklahoma, an original contractor must file a lien statement within 4 months after last furnishing (subcontractors and their suppliers within 90 days), claimants other than the original contractor generally must send a pre-lien notice within 75 days after last furnishing, and an action to enforce must be brought within 1 year after the lien is filed.

Last checked . General information, not legal advice.

Oklahoma at a glance

Deadline to record lien
4 months (90 days for subcontractors)
Original contractors: 4 months after material or equipment was last furnished or labor last performed. Subcontractors and their suppliers: 90 days.
Preliminary notice required
Yes in some cases (pre-lien notice, most non-contractors)
Pre-lien notice to the original contractor and an owner within 75 days after last furnishing. Exemptions cover claims under $10,000 and residential projects of 4 or fewer units not occupied by an owner; owner-occupied dwellings always require it.
Deadline to enforce lien
1 year after filing the lien

Sources

Last checked

The rules in Oklahoma

How long does a contractor have to file a mechanics lien in Oklahoma?

Deadline to record lien in Oklahoma: 4 months (90 days for subcontractors). Original contractors: 4 months after material or equipment was last furnished or labor last performed. Subcontractors and their suppliers: 90 days.

Is a preliminary notice required before filing a mechanics lien in Oklahoma?

Yes in some cases (pre-lien notice, most non-contractors). Preliminary notice required in Oklahoma: yes in some cases (pre-lien notice, most non-contractors). Pre-lien notice to the original contractor and an owner within 75 days after last furnishing. Exemptions cover claims under $10,000 and residential projects of 4 or fewer units not occupied by an owner; owner-occupied dwellings always require it.

How long do you have to foreclose a mechanics lien in Oklahoma?

Deadline to enforce lien in Oklahoma: 1 year after filing the lien.

Where do the Oklahoma mechanics lien deadlines come from?

The rules above come from Okla. Stat. tit. 42, 142, Okla. Stat. tit. 42, 143, Okla. Stat. tit. 42, 142.6 and Okla. Stat. tit. 42, 172. Each source is linked on this page. We last checked them in October 2026.

Good to know

The latest amendment to 42 O.S. 142.6, Laws 2025, HB 2104 (a felony classification bill), took effect January 1, 2026. The current text still sets the 75-day pre-lien notice deadline.

What this means in practice

Deadlines often differ by role. The period for a general contractor who dealt directly with the owner can be different from the period for a subcontractor or supplier, and residential projects can have their own rules. Check which category fits before relying on a single number.

The event that starts the clock matters as much as the length of the period. Depending on the statute, it can be the last day labor or materials were furnished, completion of the project, or the recording of a notice of completion or commencement by the owner. Keeping dated records of the last work performed helps establish the start date.

Recording a lien is not the end of the process. If the debt is not paid, the claimant generally has to file a lawsuit to foreclose the lien within the enforcement period, or the lien expires. When the debt is paid, the owner will usually want a signed lien release recorded so the title is clear.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.