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Oklahoma mechanics lien deadlines for contractors

A plain-English summary of how a contractor, subcontractor or supplier protects payment with a mechanics lien in Oklahoma. Last checked 2026-10-05. This is general information, not legal advice. Verify with your attorney before you rely on any deadline.

The rules at a glance

  • Who: original contractors, subs, suppliers, lessors, laborers (42 O.S. 141, 143)
  • NTO: pre-lien notice within 75 days after last supply; required for owner-occupied dwellings (142.6). NOC: none
  • Claim: original contractor 4 months; subs 90 days (142, 143). Foreclosure: 1 year from filing (172)
  • Waiver forms: none. Residential: owner-occupied requires notice

Source and last verified

Official source: https://www.oklegislature.gov/OK_Statutes/CompleteTitles/os42.pdf. Last verified 2026-10-05. Deadlines often differ for residential and commercial projects and change when the law changes. Verify with your attorney.

How BossHours helps

BossHours loads state rules into the app and shows a verify-with-your-attorney note beside each one, so notices and waivers are prepared from your job records. It does not give legal advice.

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Oklahoma mechanics lien deadlines for contractors