To become a general contractor in Washington, you must register with the Department of Labor & Industries (L&I). Registration allows you to legally bid, advertise, and perform construction work statewide. The process requires:
A Washington Contractor’s License is technically a registration with the Department of Labor & Industries (L&I). It is required for anyone who advertises, offers, or performs construction, repair, or remodeling work.
2 Core Classifications: What are the Types of Contractor Licenses?
Washington L&I defines two primary contractor classes:
Do I Need a Contractor License in Washington?
Yes, if you build, remodel, repair, demolish, or move structures in Washington. Unregistered contractors face significant risks:
We file Washington mechanics lien right the first time.
Yes, most independent contractors must register. Confusion often arises between the Business License (Department of Revenue) and Contractor Registration (L&I).
Note: Even if you are exempt from the DOR business license fee, you likely still need a UBI number to get your L&I contractor bond.
| Category | Document | Specific Requirements |
|---|---|---|
| Business Setup |
UBI Number
Entity Registration
Federal EIN
|
9-digit ID from Dept. of Revenue.
Filed with Sec. of State (LLC/Corp only).
IRS-issued ID (Required if hiring employees).
|
| Financial Security |
Surety Bond
Liability Insurance
|
Original, signed document.
$30k (General) or $15k (Specialty). Cert. holder must be L&I.
$200k public / $50k property (or $250k combined). |
| Admin & ID |
Signatures
Principal ID
Physical Address
|
Notarized on application form.
Photo ID + SSN (or ITIN) for all owners.
No P.O. Boxes (Mailing address can differ).
|
| Fees | Registration Fee | $141.10 via check/money order. Payable to: Department of Labor & Industries. |
The documents you will need to gather before starting your application for a license are:
1. Proof of Business Setup
2. Financial Security Documents
3. Personal & Administrative Information
4. Registration Fee
Payment: A check or money order for $141.10 payable to “Department of Labor & Industries”. (Valid for 2 years).
Note: If you’re hiring employees, you are required to open a workers’ compensation account with L&I via the Department of Revenue.
Follow this step-by-step guide to register your business and secure your license from the Washington Department of Labor & Industries (L&I).
Register Business: Obtain your Unified Business Identifier (UBI) number from the Department of Revenue.
Purchase Bond: Secure a $30,000 continuous surety bond (or $15,000 for specialty contractors).
Get Insurance: Purchase a general liability policy ($200,000 public liability / $50,000 property damage).
Notarize: Complete the Application for Contractor Registration and have it notarized.
Submit: Mail your application and $141.10 to:
Contractor Registration, P.O. Box 44450, Olympia, WA 98504-4450
Mailed applications take 3–4 weeks. Apply in person at a local L&I office for same-day registration.
Pro Tip: After applying, use the L&I Verify a Contractor tool to perform a contractor license WA lookup and confirm your registration is active.
Yes. Beyond avoiding fines, the most critical reason to get licensed is to protect your revenue. Only licensed contractors have the right to file a mechanic’s lien. If a client refuses to pay, an unregistered contractor has no legal power to force payment through a lien. Don’t risk your livelihood. Get licensed.
Compared to other states, it is relatively easy. Washington is currently a “registration” state, not a “licensing” state for general contractors. This means you do not need to pass a trade exam or prove years of experience to register. You simply need to meet the bonding and insurance requirements.
No, not entirely. While you can register your business (UBI) with the Department of Revenue online, the L&I Contractor Registration application must be notarized and physically delivered. You must either mail the packet to Olympia or visit a local L&I office in person.
In Washington, the difference is strictly financial. If a “handyman” performs work totaling more than $500 (labor and materials combined), they legally become a contractor and must register with L&I. There is no separate “handyman license”—you either stay under $500 or register as a General/Specialty contractor.
While the registration fee is only $141.10, you should budget $1,000–$1,500 for startup costs. You typically pay 1-5% of the bond amount (approx. $100–$500/year) and around $500–$1,000/year for liability insurance, depending on your credit and business type.
Income varies widely by experience and region. As of 2025, the average base salary for General Contractors in Washington ranges from $70,000 to $110,000+ annually, with self-employed business owners often earning significantly more depending on project volume.
We get you paid faster.
Northwest Lien files mechanics liens (or construction liens) and preliminary notices electronically for Washington contractors, often in as little as 48 hours (rush lien). We handle the complex paperwork so you can focus on building.
Proven Results
Clients know you mean business when they see a lien filed by Northwest Lien. We are proud to recover an average of $2 million annually for our clients.
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Create a free account today to start sending notices, or contact us to learn more.

