STATE LICENSE
RequiredWashington State Department of Agricultur…
WSDA licenses anyone engaged in the business of applying pesticides to the land or property of another as a Commercial Applicator. It is a joint company-individual license held by the person who makes the pesticide application decisions for the company. Getting it means passing the Washington Laws and Safety exam plus a category exam for every area the business operates in, paying the $250 annual application fee, filing the Commercial Company License Application, submitting proof of financial responsibility and holding a Department of Revenue business licence.
The structural categories split the work. PCO General covers pests in and around residences, public buildings, commercial buildings and grounds, disposal sites, feed lots and farmsteads including transportation equipment - but not fumigants, not ornamental or structurally destructive pests, not outdoor vertebrate control away from the structure, and not real estate inspections. PCO Structural covers structurally destructive pests including fungus, termites, carpenter ants and wood-boring beetles, again excluding fumigants. Space Fumigation is its own category.
Wood-destroying organism inspections are a separate license entirely. A Structural Pest Inspector license, at $85 a year, is required to perform complete WDO inspections for the transfer, exchange or refinancing of a structure, requires passing both a general knowledge exam and a practical exam, and is only valid for complete WDO inspections if the holder owns or is employed by a business holding a structural pest inspector company license with current insurance.
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 in Washington is exclusively state-level: WSDA issues, renews and enforces the Commercial Applicator and Structural Pest Inspector licenses from Olympia, and there is no city or county pest control permit to add. Where local government appears is on the repair side. Once a pest control company amends a structure it becomes a contractor, and RCW 18.27.110 then requires the city, town or county to verify its L&I registration before issuing a building permit and to print the registration number on the permit. Seattle SDCI, Tacoma, Spokane and King County Permitting for unincorporated King County apply that check. RCW 18.27.130 keeps them from imposing a local contractor license or bond; a general business license fee and a gross-receipts tax are all they may charge.
The local offices section below names the exact permit desk for every Washington 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 September 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
Licensed Commercial Applicators and Commercial Operators are exempt from the Structural Pest Inspector license application fee, though the two SPI exams still apply.
WSDA licenses renew annually, but every licensee sits in a five-year recertification cycle met by approved courses or by retesting. The number and type of credits depend on the licenses held.
WSDA's own category guidance states that businesses that amend structures for pest control are required to register as a contractor with the Department of Labor & Industries - so termite repair work needs the L&I bond as well as the WSDA license.
A practical sequence for a new pest control contractor in Washington. 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.
Every person who fails to comply with the Washington Pesticide Application Act or its rules may be subjected to a civil penalty determined by the director. Each violation is a separate and distinct offense, and anyone who procures, aids or abets the violation is treated as having violated the section.
Any person who violates any provision or requirement of the chapter or its rules is guilty of a misdemeanor; a second or subsequent offense is a gross misdemeanor, with offenses more than five years after a previous conviction treated as first offenses.
Failure to submit proof of financial coverage before the existing policy or bond expires starts WSDA license suspension procedures against the Commercial Applicator.
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 September 2026.
Pending verification: The insurance amount required of a structural pest inspector company, and the SPI company license fee, were not retrieved from WSDA. · The number of recertification credits required per five-year cycle for PCO General and PCO Structural licensees was not retrieved; WSDA states the requirement varies by license type. · Exam fees of $25 or $58 per sitting reported in WSDA summary material were not confirmed on the licensing pages fetched.
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.