STATE LICENSE
RequiredWashington State Department of Labor & In…
L&I names roofing as one of the 63 specialties that require contractor registration. The requirements are the chapter 18.27 RCW package: a $15,000 specialty surety bond, liability insurance of $200,000 public liability plus $50,000 property damage or $250,000 combined single limit, and $150.20. No roofing trade exam exists at the state level.
Asbestos is the sleeper. L&I requires a good faith inspection by an AHERA certified building inspector before any remodel, repair, removal or other work that could disturb suspect materials - explicitly regardless of the age of the building - and both the building owner and the contractor face a mandatory $600 per day fine if it is not performed. Old built-up roofing, felts and mastics are common suspects. Abatement itself must go to a certified asbestos contractor, and L&I notification is required for projects over 48 square feet or 10 linear feet.
Moss treatment is a pesticide application. WSDA tells landscape and maintenance companies that applying pesticides to a customer's property requires a Commercial Applicator license even if the work is only moss control on roofs or lawns, even with just a backpack sprayer or spreader, and even part-time. WSDA runs a Structural and Turf Demossing limited specialty category for exactly this work.
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Reroof permits come from the local building department under the statewide building code, and RCW 18.27.110 requires that city, town or county to verify your L&I registration before issuing, print the registration number on the permit, and give the applicant written notice about the risk of using an unregistered contractor. Seattle SDCI, Tacoma, Spokane and King County Permitting for unincorporated King County all work this way. None of them can require a local roofing license: RCW 18.27.130 reserves contractor registration, licensing and bonding to the state, leaving cities only a general business license fee and a gross-receipts tax. The asbestos and pesticide layers are also state-level - L&I takes the abatement notification, WSDA takes the applicator license - so the local counter is checking your state credentials rather than issuing its own.
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.
L&I describes the fine for failing to perform an asbestos good faith inspection as mandatory, and it lands on the building owner and the contractor alike.
WSDA counts moss control on roofs or lawns as pesticide application requiring a Commercial Applicator license, even if you only use a spreader, backpack sprayer or hand application and only work part-time.
A Commercial Applicator must file proof of financial responsibility with WSDA - either $50,000 public liability and $50,000 property damage with no more than a $5,000 deductible, or a $100,000 surety bond - separate from the contractor bond.
A practical sequence for a new roofing 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.
Advertising, bidding or roofing while unregistered, suspended or revoked is a gross misdemeanor, separately for each day after a citation and each worksite.
Building owners and contractors are both subject to a mandatory fine if the good faith asbestos inspection is not performed before work that could disturb suspect materials.
Every person who fails to comply with the Washington Pesticide Application Act or its rules may be subject to a civil penalty determined by the director, and each violation is a separate and distinct offense.
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: Washington's construction fall protection trigger height under chapter 296-880 WAC could not be read directly from the rule text during this research; confirm the threshold with L&I before relying on it. · Whether steep-slope reroofing over a certain square footage triggers any additional L&I notification beyond the asbestos rules was not confirmed.
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.