STATE LICENSE
ConditionalOklahoma Department of Agriculture, Food …
Mowing, planting, hardscape, and grading carry no Oklahoma state trade credential. The trigger is chemicals: applying pesticides for hire is commercial application under 2 O.S. § 3-82, and lawn, ornamental tree, and shrub work in residential and business areas is ODAFF Category 3a, Ornamental and Turf Outdoor — $100 per category per year, with a $92 exam and liability insurance.
Lighting and water cross into licensed trades. Class 2 and Class 3 low-voltage circuits are exempt from electrical licensing when installed per NFPA 70 (59 O.S. § 1682(B)), but a new line-voltage circuit needs a licensed electrician. The lien statute also covers landscaping: claims for planting trees, vines, plants, or hedges must be filed within four months (42 O.S. § 142).
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Pesticide licensing is statewide through ODAFF. Cities control irrigation tie-ins through their plumbing permits — cities of 2,000+ with water systems must require permits for plumbing work (59 O.S. § 1015) — and set any local business rules.
The local offices section below names the exact permit desk for every Oklahoma county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
Pure landscaping requires no state license fee; credentials start when you apply pesticides for hire.
Class 2 and Class 3 circuits installed per NFPA 70 don't need an electrical license.
Lien statements for planting trees, vines, plants, or hedges are due within four months.
A practical sequence for a new landscaping contractor in Oklahoma. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Administrative penalties for violations of the Agricultural Code, including the applicator license requirement.
Line-voltage wiring without a license violates the Electrical License Act.
An original contractor claiming a lien must file the lien statement with the county clerk within four months after the last date materials or labor were furnished; outside that window the lien is not perfected.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
Every fact in this file was checked against these official sources on October 2026.
Pending verification: Whether installing lawn irrigation tied to potable water requires a CIB plumbing license (the Plumbing License Law does not address lawn irrigation expressly; no CIB guidance found) · Whether fertilizer-only lawn application for hire requires any ODAFF registration · Whether Oklahoma City or Tulsa require their own contractor license or registration for this trade before issuing permits (CIB warns local jurisdictions may have their own licensing, registration, and permitting; city codes were not retrieved)
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.