What Is a Washington Contractor Bond?
A Washington contractor bond is a legally required financial guarantee that protects the public — your customers, workers, and suppliers — if you fail to meet your obligations as a licensed contractor.
A Washington contractor bond — officially called the Continuous Contractor's Surety Bond (L&I form F625-003-000) — is required by the Washington State Department of Labor and Industries (L&I) before any contractor can register, advertise, bid on, or perform construction work in the state. This Washington state contractor surety bond is governed by RCW 18.27 and must be on file with L&I before your registration is issued or renewed.
A surety bond is not insurance that protects you — it protects your customers, workers, subcontractors, suppliers, and the state. If you fail to pay wages, complete a project, or violate state law, affected parties may file a claim against your L&I contractor bond for compensation up to the bond's face value. If the surety company pays out a valid claim, you are required to reimburse them.
Key distinction: Being bonded does not reduce or eliminate your financial responsibility. It ensures affected parties can be compensated even if you cannot or do not pay.
The bond is continuous — it remains active until canceled or replaced. Washington general contractor registration bonds are valid for two years and must be renewed before expiration, along with your bond and insurance.
The Three Parties in Every Surety Bond
Every surety bond is a three-party agreement:
Three-Party Bond Agreement
Who Needs a Washington Contractor Bond?
Washington state law (RCW 18.27.020) requires all construction contractors to register with L&I and carry a valid surety bond before performing any work.
- General contractors performing new construction, remodeling, repair, or demolition
- Specialty contractors in any of Washington's 63 regulated trade classifications
- Electrical and telecommunications contractors (a separate bond is required)
- Fire sprinkler system contractors
- Structural pest inspectors and side sewer contractors
- Out-of-state contractors performing construction work in Washington — the same requirements apply regardless of where your business is based
Working without a valid bond and registration in Washington may result in penalties and fines under state law. Once registered, you must display your contractor registration number on all business communications — business cards, estimates, bid proposals, and ads. Failure to include your number is a violation of RCW 18.27.
General Contractors vs. Specialty Contractors
General contractors can perform most types of construction work and hire subcontractors across multiple trades. A $30,000 general contractor bond is required for registration with L&I. Work involving plumbing, electrical, elevators, mobile home installation, boilers, and asbestos requires additional education, examination, and separate licensing beyond standard registration.
Specialty contractors can only perform work in the one specific trade they are registered for and may not hire subcontractors outside their specialty. L&I regulates 63 specialty classifications, including HVAC, roofing, painting, plumbing, flooring, tree removal, and mobile home set-up — each requiring a $15,000 specialty contractor bond filed with L&I.
Washington Contractor Bond Amounts
You never pay the full bond amount out of pocket — you pay an annual premium, a small percentage of the bond amount based primarily on your credit profile.
Effective July 1, 2024, Washington raised its required bond amounts. General contractor bonds increased from $12,000 to $30,000. Specialty contractor bonds increased from $6,000 to $15,000. These amounts apply at your next registration renewal — even if that date differs from your bond renewal date. Verify current requirements at lni.wa.gov.
What Affects Your Washington Contractor Bond Cost?
You never pay the full bond amount — only an annual premium. For a Washington state contractor surety bond, that premium is a small percentage of the required bond amount, determined primarily by your credit profile and business history.
Other Factors That Influence Your L&I Contractor Bond Rate
- Bond amount required — General contractor ($30,000) vs. specialty contractor ($15,000) bonds have different premium bases
- Years in business — Established contractors with a clean claims history often qualify for lower rates
- Prior bond claims — A history of surety claims will increase your premium at renewal
- Surety carrier — Different carriers price risk differently; as a broker we compare multiple carriers to get you the best rate
- Personal financial history — Outstanding judgments, liens, or bankruptcies can affect underwriting decisions
Most contractors receive their bond the same day they apply — often within a few hours. Submit your information, we run a soft credit check, and once approved we issue the original signed bond document. Standard registration processing by L&I takes additional time, but the bond itself is typically in your hands same-day.
How to Register as a Contractor in Washington
Getting registered involves several steps beyond just getting your bond. L&I recommends completing them in this specific order to avoid delays.
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1Register Your Business
Register with the Washington Department of Revenue to obtain a Uniform Business Identifier (UBI) number. If forming an LLC or corporation, also register with the Washington Secretary of State before proceeding.
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2Get Your Surety Bond
Contact a licensed surety broker for a quote and purchase the bond appropriate for your license classification. L&I requires the original signed bond document with the bonding company's seal — photocopies are not accepted.
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3Purchase General Liability Insurance
Minimum coverage of $250,000 combined single limit (or $50,000 property damage / $200,000 public liability). Telecommunications contractors must carry at least $170,000. Verify current minimums with L&I as these may change.
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4Complete Your Application
Fill out the Application for Contractor Registration (form F625-001-000) and gather all required documents, including your original bond and certificate of insurance.
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5Pay the Fee and Submit
Pay the registration fee (verify the current amount at lni.wa.gov as fees may change) and submit to L&I — in person at your local L&I office, or by mail to: Contractor Registration Section, PO Box 44450, Olympia, WA 98504-4450.
Once L&I processes your application, registration typically takes several weeks. Your bond and registration status will appear in L&I's public contractor database, which property owners and project managers use to verify contractors before hiring.
How to Get Your Washington Contractor Bond
Most contractors are approved and receive their bond the same day they apply — even those with bad credit.
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1Get a Free Quote
Tell us your contractor classification (general or specialty) and we'll find the best rate from top-rated, AM Best-rated surety carriers accepted by L&I. The quote process takes about 2 minutes.
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2Apply and Get Approved
We run a soft credit check and verify basic business information. Most applications are approved instantly or within one business day — including contractors with imperfect credit.
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3Receive Your Bond Document
You receive the original signed bond document with the bonding company's seal. L&I requires the original — not a photocopy. The business name on the bond must exactly match the name on file with L&I.
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4File with L&I and Complete Registration
Submit the original bond to L&I along with your registration application, certificate of insurance, and the required fee. The bond must reach L&I before the filing date shown on the bond document.
What You'll Need to Apply
- Business name — must match exactly what is on file with L&I (the bond may be rejected if names differ)
- Business address and entity type (LLC, sole proprietor, corporation, or partnership)
- Owner name(s), ownership percentages, and Social Security Number for credit underwriting
- Washington UBI number (if already registered with the Department of Revenue)
- L&I license or application number (if applicable)
What Your Bond Covers
Washington law (RCW 18.27.040) specifies who can file a claim against your bond and in what priority order claims are paid.
👷 Workers & Employees
Unpaid wages and employee benefits owed to workers you employ. Employee labor claims have first priority under RCW 18.27.040. Note that workers' compensation is a separate requirement — your surety bond does not replace it.
🏠 Project Owners / Homeowners
Financial damages from breach of contract — including failure to complete work or negligent workmanship.
🔧 Subcontractors & Suppliers
Registered subcontractors, material suppliers, and equipment companies you fail to pay for work on your projects.
🏛️ State of Washington
Unpaid taxes and contributions owed to the State of Washington.
⚖️ Court-Ordered Costs
Court costs, interest, and attorney's fees a plaintiff may be entitled to recover.
Claims are filed in superior court in the county where the work was performed. The surety's total liability cannot exceed the bond's face value. Any amount paid by the surety will be sought from you through indemnification.
Under RCW 18.27, the L&I Director may require a bond of up to three times the standard amount when a contractor applies for registration or renewal — if the contractor (or any corporate officer or owner) has had qualifying final judgments involving a residential single-family dwelling in the past five years. Contact L&I directly if this may apply to your situation.
Bond Renewal, Cancellation, and Key Rules
Renewing Your Bond
Washington contractor registrations are valid for two years and must be renewed before expiration along with your bond and insurance. You can renew by mail, online, or in person at a local L&I office. If you have a new bonding company, updated bond amount, or new insurance provider since your last renewal, update that information with L&I before completing your renewal.
Switching from General to Specialty Contractor
Important: Per L&I guidance, if you switch from a general contractor registration to a specialty contractor registration, your bond amount may not be reduced for a period after the switch. Contact L&I directly to confirm how this applies to your renewal timeline.
Bond Cancellation
The surety company can cancel your bond but must provide written notice to L&I before doing so. This notice period gives you time to secure a replacement bond and avoid a gap in coverage.
If your bond expires, is canceled, or becomes invalid, L&I may suspend your contractor registration. You cannot legally advertise, submit bids, or perform construction work with a suspended registration. Contracting without a valid registration is a violation of Washington state law. Set a renewal reminder well before your expiration date.
Local and Municipal Bonding Requirements
The state L&I bond covers statewide registration, but some Washington cities and counties require an additional contractor bond for local licensing. This is most common for:
- Public right-of-way work (utility cuts, curb and gutter, sidewalk work)
- City- or county-issued contractor licenses required before pulling permits
- Specialty work in jurisdictions with their own licensing ordinances
Local bonding requirements are typically communicated when you pull permits. Each jurisdiction sets its own bond amount. The City of Seattle, for example, has required a separate bond for side sewer contractors — verify current amounts with the relevant city or county before starting work. Contact us and we can help identify and secure both state and local bonds.
Surety Bond vs. Cash Deposit
Washington allows a cash deposit as an alternative — but for most contractors, a surety bond is far more practical.
Washington allows an "assignment of savings" — depositing cash, money market funds, or certificates of deposit in a dedicated bank account equal to the full bond amount. While allowed, this option is rarely the right choice for active contractors.
| Factor | Surety Bond ✓ | Cash Deposit ✗ |
|---|---|---|
| Upfront cost | 15K license bonds starting at $85/year | Full $30,000 locked in a bank account |
| Capital tied up | None — money stays working in your business | Frozen for life of business + ~2 years after closing |
| Speed to obtain | Same-day issuance in most cases | Must open dedicated account and fund it first |
| Access to funds | Full access to all operating capital | No access while business is active |
| Best for | Almost every contractor | Only those who cannot qualify for a surety bond |
Out-of-State Contractors Working in Washington
If your business is based in another state but you are performing construction work in Washington, you must meet Washington's bonding and registration requirements. The same process applies regardless of where your business is registered.
- Register with Washington L&I's Contractor Registration Section
- Purchase a general or specialty contractor bond from a surety carrier authorized to do business in Washington state
- Carry Washington-compliant general liability insurance at the required minimums
- Display your Washington contractor registration number on all project-related communications in the state
- Note that public works projects may require a separate performance bond in addition to your registration bond
Washington participates in NASCLA (National Association of State Contractors Licensing Agencies), but its registration system does not require a trade exam. Qualification is based on bonding, insurance, and business registration. If you are also licensed in California, confirm Washington-specific requirements directly with L&I.
Frequently Asked Questions
Everything Washington contractors ask us before getting bonded.
Washington L&I Contractor Resources
Always verify current requirements directly with Washington L&I. Bond amounts, fees, and insurance minimums can change.
Official L&I contractor registration guide including required steps, documents, and fees.
Look up any Washington contractor's registration and bond status in the L&I public database.
Full list of Washington's 63 specialty contractor classifications and their specific requirements.
Washington's contractor registration law, including bond requirements and claim provisions.
Written & Reviewed by a Licensed Surety Bond Broker
The information on this page is written and maintained by a licensed P&C broker with over 15 years of hands-on experience helping contractors get bonded across California and Washington.
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