Oklahoma mechanics lien law and deadlines
In Oklahoma, a prime contractor has 4 months after last furnishing to file a lien statement with the county clerk, subcontractors and suppliers have 90 days, and most of them must send a pre-lien notice within 75 days. Foreclosure suit is due within 1 year of filing.
Oklahoma's mechanics lien statute sits in Title 42, sections 141 through 154 and 171 through 180 of the Oklahoma Statutes. The two numbers that matter most are the filing windows. A contractor that dealt directly with the owner has 4 months after it last furnished labor, material, or rented equipment to file a lien statement with the county clerk. A subcontractor, or a supplier to a subcontractor, has 90 days. Most claimants other than the prime contractor must also send a pre-lien notice no later than 75 days after their last furnishing. Once the lien is on record, the lawsuit to enforce it has to be filed within one year.
| Step | Deadline or rule | Statute |
|---|---|---|
| Pre-lien notice (claimants other than the original contractor) | Before filing the lien, and no later than 75 days after last furnishing, to the original contractor and an owner | 42 O.S. § 142.6 |
| Pre-lien notice exemptions | Claims under $10,000, and non-owner-occupied residential projects of 4 or fewer units (owner-occupied dwellings are never exempt) | § 142.6(B)(3) |
| Lien statement, original contractor | File with the county clerk within 4 months after last furnishing | § 142 |
| Lien statement, subcontractor or supplier | File with the county clerk within 90 days after last furnishing | § 143 |
| Notice of lien to owner | Mailed by the county clerk by certified mail within 5 business days after filing | § 143.1 |
| Foreclosure suit | Within 1 year from filing the lien statement, in district court | § 172 |
| Public projects | No lien; payment bond on public contracts over $100,000 | 61 O.S. §§ 1, 2 |
Who has lien rights in Oklahoma
Section 141 gives a lien to anyone who, under an oral or written contract with the owner, performs labor, furnishes material, or leases or rents equipment used on the land to build, alter, or repair a building, improvement, or structure. It also reaches fixtures and machinery, landscaping (trees, vines, plants, hedges), fences, and abutting sidewalks. The lien amount includes everything owed at the time of filing, and the statute expressly says that covers applicable profit and overhead.
Section 143 extends the same rights down the chain. A subcontractor, or an artisan or day laborer working for the contractor, gets a lien "in the same manner, and to the same extent" as the original contractor. So does anyone who furnishes material or rents equipment to a subcontractor. The statute is written around labor, material, and equipment; it does not separately list architects, engineers, or surveyors, so a design firm should get advice before relying on a lien for services alone.
There is a cap that protects owners. Under § 143, the owner never owes subcontractor claimants more than it agreed to pay the original contractor, and the owner carries the risk of payments to the prime until the 90-day sub filing period runs out.
The pre-lien notice: Oklahoma's preliminary notice
Oklahoma's version of a preliminary notice is the pre-lien notice in § 142.6. Any claimant other than the original contractor must send it to the last-known address of the original contractor and an owner of the property before filing a lien statement, and no later than 75 days after the last date it supplied material, services, labor, or equipment. One notice per project is enough; it protects later deliveries on the same job. It is not required for retainage held by agreement.
- Contents: the claimant's name, address, and phone; the date of supply; a description of what was furnished; the name and address of whoever ordered it; the property address or legal description; the dollar amount furnished or to be furnished; and a signature.
- Delivery that creates a presumption of compliance: hand delivery with a delivery confirmation receipt, an automated (electronic) transaction under Title 12A, or certified mail, return receipt requested. Certified mail is effective the day it is mailed.
- Owner's address: you can ask the original contractor in writing for the owner's name and address. If the contractor does not answer within 5 days of receiving the request, the notice requirement to the owner becomes unenforceable.
- Affidavit at filing: when you file the lien, you hand the county clerk a notarized affidavit verifying that you sent the pre-lien notice. Falsifying it is a crime.
- Penalty for skipping it: the part of the claim for which no notice was sent is invalid and unenforceable.
Filing the lien statement
The lien statement is filed in the office of the county clerk for the county where the land sits. Under §§ 142 and 143 it must be verified by affidavit and set out the amount claimed with the items as nearly as practicable, the names of the owner, the contractor, and the claimant, and a legal description of the property. You give the clerk the last-known mailing addresses of the owner and the party you contracted with, and the clerk mails the notice of lien by certified mail within 5 business days (§ 143.1). The fee for that mailing is set by 28 O.S. § 32 and is paid by the filer.
An owner can take the lien off the property by depositing cash or a corporate surety bond equal to 125 percent of the claim with the county clerk (§ 147.1). The lien then shifts to the deposit or bond, and you have to pursue it in the same time and manner as a foreclosure.
Enforcing the lien
Section 172 requires a civil action in the district court of the county where the land is located, brought within one year from the date the lien was filed with the county clerk. Miss it and the lien is unenforceable, though the underlying contract claim against whoever hired you survives. Oklahoma also treats construction money as trust funds: under §§ 152 and 153, payments a contractor or subcontractor receives on a building or remodeling contract must go to lienable claims on that job first, and misapplying them can be prosecuted as embezzlement.
Residential and owner-occupied work
Homes get different treatment in two places. First, a lien on property occupied as a dwelling by an owner is not valid unless the pre-lien notice went out within 75 days of the last furnishing, even when the claim is under $10,000. Second, the exemption for small residential projects (four or fewer units) applies only when none of the units is owner-occupied. Section 143.3 also says the rules on liens for leased or rented equipment do not apply to homestead property or agricultural land.
Lien waivers in Oklahoma
Title 42 does not prescribe a statutory lien waiver form, so waivers are contract documents and the wording controls. Use a conditional waiver tied to a specific payment, and swap it for an unconditional one only after the funds clear. Track which waiver went out against which pay app so a final waiver never gets signed while retainage is still open.
Public projects use payment bonds
You cannot lien public property. Instead, 61 O.S. § 1 requires the awardee on a contract over $100,000 for construction or repair on public real property to furnish a bond in at least the full contract sum that guarantees payment to subcontractors and suppliers of labor, material, and equipment. That is Oklahoma's version of a payment bond law. Under § 2, a claimant with no contract with the bonded contractor must give written notice to the contractor and surety within 90 days of last furnishing, and suit is due within one year of last furnishing (two years if a claim was filed within the first year).
Related Oklahoma guides: Oklahoma contractor license requirements, Oklahoma prompt payment rules, and Oklahoma prevailing wage. Smart Business Automator keeps last-delivery dates and aging by job so the 75-day and 90-day windows show up before they close; see construction accounts receivable automation.
Frequently asked questions
How long do I have to file a mechanics lien in Oklahoma?
A contractor hired by the owner has 4 months after last furnishing labor, material, or equipment (42 O.S. § 142). Subcontractors and suppliers to subcontractors have 90 days (§ 143). Both file with the county clerk where the property is located.
Is a preliminary notice required in Oklahoma?
Yes, for most claimants other than the original contractor. The pre-lien notice under § 142.6 goes to the original contractor and an owner no later than 75 days after last furnishing. Claims under $10,000 and non-owner-occupied residential projects of four or fewer units are exempt, but liens on owner-occupied dwellings always need it.
How long does an Oklahoma lien last?
You must file suit to foreclose in district court within one year from the date the lien statement was filed (§ 172).
Can an owner remove a lien from the property?
Yes. Under § 147.1 the owner or another interested party can deposit cash or a surety bond equal to 125 percent of the claim with the county clerk. The lien then attaches to the deposit or bond instead of the land.
Can I file a lien on a public project in Oklahoma?
No. On public contracts over $100,000, the contractor posts a bond under 61 O.S. § 1, and unpaid subs and suppliers claim against that bond under § 2.
Sources
- Oklahoma Legislature: Oklahoma Statutes Title 42, Liens (§§ 141 to 180)
- Oklahoma Legislature: Oklahoma Statutes Title 61, Public Buildings and Public Works (§§ 1, 2)
Laws and rates change. Confirm current requirements with the state agency before you bid, file, or pay. This page is general information, not legal advice.