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Oklahoma Mechanics Lien
Deadlines & Filing Rules

Every notice, deadline, and recording requirement for an Oklahoma construction lien, drawn from 42 O.S. §§ 142, 143.1, 143.2, 172 and the same rule engine that calculates deadlines for our filing customers.

File an Oklahoma lien from $99 See the deadlines

Oklahoma lien rules at a glance

Preliminary notice
Required for subcontractors, sub-subcontractors, and suppliers
Lien filing deadline
within 4 months after last furnishing labor or materials (varies by role)
Notarization
Required
The lien claim must be sworn to under oath
Where to record
County clerk where the property sits
E-recording
Varies by county
Ask the recording office whether it accepts electronic recording before you rely on it.
Enforcement deadline
Within 1 year after the lien is recorded

Who can file a mechanics lien in Oklahoma

Lien rights depend on where you sit in the contracting chain. Tenant-ordered work can reach the owner's interest in Oklahoma only where the owner consented to or required the improvements. On owner-occupied homes in Oklahoma, only parties with a direct contract with the owner can lien.

Claimant Lien rights in Oklahoma
General contractor (direct contract with the owner) Yes
Subcontractor (hired by the general contractor) Yes
Sub-subcontractor (hired by a subcontractor) Yes
Material supplier to the owner Yes
Material supplier to the general contractor Yes
Material supplier to a subcontractor Yes

Oklahoma mechanics lien deadlines

Required for subcontractors, sub-subcontractors, and suppliers. Preliminary notices go to the property owner and the general contractor by certified mail.

Calculate your Oklahoma deadlines

Enter your role and project dates to turn the rules below into calendar dates. For other states, use the mechanics lien deadline calculator.

Project type

Choose your role to see which dates you need.

These dates come from the same rules our lien filing service uses. They are not moved for weekends or holidays. Deadlines turn on facts specific to your project. Confirm with counsel before relying on them.

Preliminary notice deadline

The notice that preserves lien rights before any payment problem exists.

Who Project type Deadline
All claimants All projects Within 75 days after last furnishing labor or materials

Mechanics lien filing deadline

The last day the lien can be recorded against the property.

Who Project type Deadline
General contractors All projects Within 4 months after last furnishing labor or materials
Subcontractors, sub-subcontractors, suppliers to the owner, suppliers to the general contractor, and suppliers to a subcontractor All projects Within 90 days after last furnishing labor or materials

Oklahoma does not require a notice of intent before recording a lien, but sending one is often what gets the invoice paid.

Recording and enforcing an Oklahoma lien

Recording the lien

Record with the county clerk where the property sits. Whether electronic recording is accepted varies by county, so confirm with the recording office and build mailing time into the deadline. The lien must be notarized. The lien claim must be sworn to under oath.

After recording

Oklahoma does not require a separate notice after the lien is recorded, though most claimants send one anyway to prompt payment. To keep the lien alive it must be enforced by lawsuit within 1 year after the lien is recorded.

Wrongful lien exposure

Filing a knowingly false lien in Oklahoma can carry criminal penalties as well as civil liability. A claimant who falsifies the notarized pre-lien compliance affidavit filed with the lien commits a misdemeanor (fine up to $5,000, up to 30 days in jail) (§ 142.6(C)); an original contractor who falsifies a lien statement to the owner of a dwelling commits a felony (§ 142.4). In a lien enforcement action the party who wins judgment recovers a reasonable attorney fee (§ 176).

Practitioner notes for Oklahoma

Oklahoma's mechanics lien law is in Title 42 of the statutes. A contractor or supplier who contracts directly with the owner must file a lien statement within 4 months after last furnishing labor, materials, or equipment (42 O.S. 142). Subcontractors, their suppliers, and lower tiers have 90 days after last furnishing (42 O.S. 143). The statement is filed with the county clerk where the land sits and must be verified by affidavit. The county clerk then mails notice of the lien to the owner by certified mail within 5 business days after filing (42 O.S. 143.1). Claimants other than the original contractor must send a pre-lien notice to the original contractor and an owner before filing the lien, and no later than 75 days after the last date they furnished (42 O.S. 142.6). The notice is not required for claims under $10,000 or for residential projects of four or fewer units where no owner lives, but it is always required when an owner occupies the property as a dwelling. Certified mail, return receipt requested, creates a presumption that it was sent. When filing the lien, the claimant gives the clerk a notarized affidavit confirming the pre-lien notice was sent. Falsifying that affidavit is a misdemeanor. Work not covered by a required notice cannot be liened. A suit to enforce the lien must be filed in district court within 1 year after the lien is filed (42 O.S. 172). The party who wins judgment in a lien suit recovers a reasonable attorney fee (42 O.S. 176). Special rules apply to owner-occupied homes, so confirm with counsel on residential jobs.

These notes summarize the statute as we read it.

Statutory sources: 42 O.S. §§ 142, 143.1, 143.2, 172. Read the Oklahoma lien statute. Deadlines turn on facts specific to your project. Confirm with counsel before relying on them.

File your Oklahoma mechanics lien

We calculate the Oklahoma deadlines from your project dates, prepare the lien on the correct form, and handle recording. Self-serve from $99, or full service with recording and notices handled for you from $299.

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Oklahoma mechanics lien FAQ

How long do I have to file a mechanics lien in Oklahoma?
The Oklahoma lien must be recorded within 4 months after last furnishing labor or materials. The deadline differs by claimant role and project type, so check the table above for your situation.
Do I need to send a preliminary notice in Oklahoma?
Required for subcontractors, sub-subcontractors, and suppliers. Serve it on the property owner and the general contractor by certified mail. Missing it usually forfeits lien rights for the unnoticed work.
Does an Oklahoma mechanics lien need to be notarized?
Yes. The lien must be notarized before it is recorded. The lien claim must be sworn to under oath.
Where is a mechanics lien filed in Oklahoma?
With the county clerk where the property sits. Whether electronic recording is accepted varies by county, so check with the recording office and allow time for mailing and processing when working back from your deadline.
How long is an Oklahoma mechanics lien valid?
An Oklahoma lien must be enforced through a foreclosure lawsuit within 1 year after the lien is recorded. If no suit is filed by then, the lien expires and can no longer be used to force payment.
Can a subcontractor file a mechanics lien in Oklahoma?
Yes. Subcontractors have lien rights in Oklahoma, and so do sub-subcontractors. They must follow the preliminary notice rules to keep those rights.

More Oklahoma lien tools

Bordering states

This page summarizes Oklahoma lien law for general information and is not legal advice. Deadlines depend on your role, project type, and dates; confirm them against the statute or with counsel before relying on them.