Mississippi Construction Document Management

Oklahoma 75-Day Pre-Lien Notice (42 O.S. § 142.6)

Securing mechanics lien rights in Oklahoma requires careful tracking of your last day on the project. Under 42 O.S. § 142.6, on commercial projects, a subcontractor or supplier who does not have a direct contract with the owner must generally serve a Pre-Lien Notice no later than 75 days after the last furnishing of labor or materials.

What the Pre-Lien Notice Must Include

Under 42 O.S. § 142.6, the pre-lien notice must contain specific information:

• The name and address of the claimant
• The name and address of the person who contracted with the claimant
• A general description of the labor, materials, or equipment furnished
• The amount claimed and unpaid
• A statement that the claimant is asserting a lien
• The date of last furnishing

The notice must be sent to the last known address of the original contractor and the owner of the property. Service is effective when sent by certified mail.

What Happens If You Miss the 75-Day Deadline

Under 42 O.S. § 142.6, no lien affecting property then occupied as a dwelling by an owner shall be valid unless the pre-lien notice was sent within 75 days of the last furnishing of materials. Oklahoma courts have clarified that the statute requires a pre-lien notice to be given no later than 75 days after labor, services, material, or equipment have last been supplied by the lien claimant.

Because the deadlines hinge on establishing an accurate end date, maintaining reliable field records is critical. MyCrewTracker allows Oklahoma supervisors to use Daily Reports to log their final day on site, providing the back office with the exact dates needed to calculate notice deadlines and store the delivery receipts.

Oklahoma Lien Deadlines at a Glance

Missing a single deadline in Oklahoma can void your lien rights entirely. The table below summarizes the statutory deadlines every Oklahoma contractor, subcontractor, and material supplier must track.

How to File a Mechanics Lien in Oklahoma: Step by Step

The process below reflects the standard path for an Oklahoma contractor, subcontractor, or material supplier seeking to preserve and enforce lien rights under Title 42 of the Oklahoma Statutes.

1. Log your last day of work. The 75-day pre-lien notice clock starts from your last day of furnishing labor or materials. MyCrewTracker's Daily Reports timestamp this automatically.

2. Prepare and serve the Pre-Lien Notice. Under 42 O.S. § 142.6, serve the notice on the original contractor and the property owner by certified mail within 75 days of last furnishing.

3. Prepare the lien statement. Under 42 O.S. § 142, the statement must set forth the amount claimed, the items thereof, and a legal description of the property subject to the lien. The statement must be verified by affidavit.

4. File the lien statement with the County Clerk. Original contractors have four months from last furnishing to file. Subcontractors have 90 days from last furnishing to file.

5. File suit to enforce the lien within 1 year. Under 42 O.S. § 149, an action to enforce the lien must be commenced within one year from the date the lien statement is filed with the county clerk.

6. Preserve all project documentation. Daily reports, delivery tickets, change orders, and photos become evidence in the foreclosure action.

Documents to Preserve for an Oklahoma Lien Claim

Oklahoma courts require proof that you furnished labor or materials and that they were incorporated into the property. The following records are what you need:

• Signed contract or purchase order with the prime contractor
• Certified mail receipts for the Pre-Lien Notice
• Delivery tickets signed by an authorized site representative
• Daily reports showing crew on site and work performed
• Photo evidence of installed work (timestamped and geotagged)
• Jobsite sign-in logs and crew attendance records
• Invoices, statements, and payment applications
• Email or text correspondence about scope and payment
• Change orders and extra work authorizations
• Written demand letters and any response

MyCrewTracker stores all of these in one project record. When a lien deadline approaches, the back office can generate the timeline needed to prepare the lien statement without reconstructing months of field activity.

Oklahoma-Specific Gotchas

The 75-day pre-lien notice is a strict prerequisite. Oklahoma courts have consistently held that the pre-lien notice must be sent within 75 days of the last furnishing. For property occupied as a dwelling, the notice is absolutely required — no lien is valid without it.

The filing deadline differs by role. Original contractors have four months from last furnishing to file the lien statement. Subcontractors have only 90 days. There are no extensions.

The 1-year enforcement deadline is absolute. 42 O.S. § 149 gives you exactly one year from the date the lien statement is filed to commence an action. Set two calendar reminders: one at 9 months, one at 11 months.

Public works retainage is capped at 5%. Under 61 O.S. § 113.1, public construction contracts must provide for partial payment, with up to 5% of all partial payments withheld as retainage. Once the contractor has completed in excess of 50% of the total contract amount, the retainage is reduced to 2.5%.

Public works prompt payment. Under 61 O.S. § 226, public agencies must pay proper invoices within 30 days. Retainage is released upon project completion and approval of the work.

Construction defect statute of repose. Oklahoma's statute of repose for construction defects is 10 years from substantial completion under 12 O.S. § 109. This is an absolute bar on tort actions against builders, architects, and contractors for defective design or construction.

Example Scenario: How Documentation Determines the Outcome

*The following is an illustrative scenario, not a specific case. It demonstrates how record-keeping affects outcomes in Oklahoma lien disputes.*

Consider a Tulsa mechanical subcontractor on a $500,000 commercial office renovation. The sub's last day of substantial work is August 15. Under 42 O.S. § 142.6, the sub has 75 days from August 15 to serve the Pre-Lien Notice. That deadline is October 29. The sub serves it via certified mail on October 20. The green card returns signed on October 24.

Under 42 O.S. § 143, the sub has 90 days from August 15 to file the lien statement with the Tulsa County Clerk. That deadline is November 13. The sub files the statement on November 5.

Under 42 O.S. § 149, the sub has one year from November 5 to file suit to enforce the lien. That deadline is November 5 of the following year. The sub files suit on June 15, well within the window. The lien is enforceable.

Now consider the same sub who serves the Pre-Lien Notice on November 10 — 12 days late. Under 42 O.S. § 142.6, the lien is void entirely for the work performed more than 75 days before the notice. The sub loses all lien rights for the work performed from August 15 to August 27. The $85,000 owed becomes significantly harder to collect.

Documentation is what separates these outcomes. MyCrewTracker logs the last day of work, the notice service date, the filing date, and the daily reports that prove performance.

Oklahoma Public Works Retainage (61 O.S. § 113.1)

Under 61 O.S. § 113.1, public construction contracts in Oklahoma must provide for partial payment based upon work completed. The contract shall provide that up to five percent (5%) of all partial payments made shall be withheld as retainage.

Retainage Reduction After 50% Completion

Once the contractor has completed in excess of fifty percent (50%) of the total contract amount, the retainage shall be reduced to two and one-half percent (2.5%) of the amount earned to date.

Withdrawal of Retainage in Lieu of Securities

Under 61 O.S. § 113.2, contractors may post certain securities in lieu of withholding retainage from partial payments made on the contract. No retained amount shall be withdrawn which would represent an amount in excess of the market value of the securities at the time of deposit or of the par value of such securities.

To defend against claims of payment failure, contractors must maintain perfect documentation of substantial completion. MyCrewTracker offers a secure cloud repository where Oklahoma contractors can organize dated payment applications and formal communications.

Oklahoma Public Works Prompt Payment (61 O.S. § 226)

Under 61 O.S. § 226, Oklahoma enforces strict prompt payment rules for public projects, requiring public agencies to pay proper invoices within 30 days. The statute establishes a framework for partial payments based on work completed, with retainage provisions that protect the public entity while ensuring contractors receive timely compensation for work performed.

What the Oklahoma Prompt Payment Act Covers

• 30-day payment: Public agencies must pay proper invoices within 30 days
• Retainage: Up to 5% of partial payments may be withheld, reduced to 2.5% after 50% completion
• Release: Retainage is paid upon project completion and approval of the work

To defend against claims of payment failure, contractors must maintain perfect documentation of substantial completion. MyCrewTracker offers a secure cloud repository where Oklahoma contractors can organize dated payment applications and formal communications.

What MyCrewTracker Does (and Does Not Do) in Oklahoma

MyCrewTracker is a construction documentation platform, not a legal service. Here is what it does for Oklahoma contractors:

• Logs first day and last day of work per project so you can calculate the 75-day pre-lien notice and the 90-day filing window
• Stores certified mail receipts and Pre-Lien Notice documents in the project file
• Records delivery tickets with photo and signature capture
• Captures timestamped, GPS-tagged site photos that document installation
• Generates daily report PDFs that serve as contemporaneous records
• Tracks retainage and payment dates for public works compliance
• Archives project records for 10+ years to support construction defect defense

It does not draft Pre-Lien Notices, file lien statements with the County Clerk, or provide legal advice. Those steps require an Oklahoma construction attorney.