Washington roofing: permits, codes and approvals

Washington's L&I contractor registration with a roofing specialty, the 2021 IRC (2024 codes coming May 2027), Seattle's re-roof permit rule, the customer disclosure statement and RCW 60.04 lien notices.

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1 · Product approvals

Product approvals

Washington has no state roofing product approval or listing system. Inspectors rely on the code's labeling requirements and evaluation reports.

Code evaluation reports (ICC-ES, UL, IAPMO): 48 roofing reports

2 · Permit forms

City re-roof permits

There is no statewide re-roof permit rule. Each city or county building department decides, so check locally before you start.

SeattleNo permit is needed to re-roof a one- or two-family home or townhouse if the building envelope is otherwise unchanged and any new insulation is equal or better. Any other change to the envelope needs a construction permit.BellevueNo permit for a tear-off reroof if sheathing repair is limited to five 4x8 sheets, or for an overlay unless it adds more than 5% to roof weight; energy-code insulation rules still apply when cavities are exposed.SpokaneThe city issues roofing permits and its roofing guide warns unpermitted work can draw fines; no more than 2 total layers after reroofing. Exact permit threshold not stated, so call 509-625-6300.

3 · Code rules

Code rules

The Washington State Building Code uses the 2021 IRC with Washington amendments (WAC 51-51), effective March 15, 2024. The 2024 codes are set to take effect May 3, 2027. Official adoption page ↗

2021 IRC with Washington amendmentsThe State Building Code Council's 2021 code editions and Washington amendments took effect March 15, 2024 and apply statewide.2024 codes coming May 3, 2027The State Building Code Council is adopting the 2024 IRC. The SBCC lists May 3, 2027 as the effective date for the 2024 codes.State amendments to the IRC (WAC 51-51)Washington's changes to the IRC are in chapter 51-51 WAC, including an amended Section R903 (roof weather protection).

5 · License and insurance

License and insurance

Washington doesn't issue a roofing license, but every roofer must register with Labor & Industries (L&I) as a general contractor or in the roofing specialty, with a bond and liability insurance.

L&I contractor registrationGeneral contractors can do most work and hire subs. Specialty contractors work only in their specialty and can't hire subs. The application and renewal fee is $150.20.Roofing specialty (WAC 296-200A-016)Roofing is subsection (44) of the specialty list. It covers installing and repairing materials that form a watertight roof, plus flashing, coping and roof insulation panels, but not structural repair of trusses, beams or joists.Bond: $30,000 general, $15,000 specialtySince July 1, 2024, registration and renewals require a continuous surety bond of $30,000 for general contractors and $15,000 for specialty contractors.Liability insuranceContractors must carry $200,000 public liability and $50,000 property damage, or $250,000 combined single limit.Unregistered contractors can't sue for payment (RCW 18.27.080)A contractor can't bring a lawsuit to collect payment unless it proves it was registered when the contract was made, with a narrow substantial-compliance exception.

6 · Lien and contract forms

Lien and contract rules

On home jobs of $1,000 or more, give the customer L&I's disclosure statement before work or lose lien rights. Record a lien within 90 days after last work and sue within 8 months of recording.

Customer disclosure statement (RCW 18.27.114)Required before starting work on homes of four or fewer units when the bid or contract is $1,000 or more. Keep a signed copy three years. Without proof the customer got it, you can't claim a lien.Notice to owner (RCW 60.04.031)Subs and suppliers who don't contract with the owner must send the statutory Notice to Owner. It covers only work supplied from 60 days before it is sent. On owner-occupied homes, their lien is limited to what the owner still owes the prime.Direct contractors on owner-occupied homesA roofer who contracts directly with the owner-occupant of an existing single-family home doesn't need to send the Notice to Owner and has a lien for the full contract amount.Record the lien within 90 days (RCW 60.04.091)Record the claim of lien in the county where the property is located no later than 90 days after you stopped furnishing labor or materials. Send the owner a copy by certified or registered mail or personal service within 14 days.Foreclose within 8 months (RCW 60.04.141)File suit in superior court within eight calendar months after recording the lien, and serve the owner within 90 days of filing.

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Public records, last checked Oct 23, 2026. Always verify on the official source before you permit.