Last Updated: May 2026 by the ZipBonds Team
Requirements are current as of May 2026 based on Washington RCW statutes and L&I rules. Always verify requirements in project bid documents and with the awarding authority.
Construction bonds are required for many public projects in Washington to protect project owners, subcontractors, and suppliers. If you’re bidding on public work or looking to grow your contract size, understanding Washington’s bonding requirements is essential to getting approved and winning jobs.
Get bonded in Washington quickly with ZipBonds — apply today to receive your bond capacity in minutes.
Quick Summary: Washington Construction Bond Requirements
- Required for: Most public construction projects
- Threshold: Performance and payment bonds are generally required on public works contracts (typically 100% of the contract price); for contracts of $150,000 or less, contractors may elect to have the public entity retain 10% of the contract price instead of bonds.
- Bonds required: Bid bond (commonly required at bid), performance, and payment bonds (at award)
- Bond amount: Usually 100% of the contract price
- Who needs them: General contractors on public projects
Washington Construction Bond Requirements by Project Size
| Project Type | Are Bonds Required? | Typical Requirement |
|---|---|---|
| Small public projects (≤ $150,000) | Sometimes | Contractor may elect 10% retainage instead of performance & payment bonds |
| Public projects > $150,000 | Yes | Bid + Performance + Payment (typically 100%) |
| Private projects | Usually no | May be contract-specific |
Bonding requirements in Washington vary based on project size and whether the work is public or private.
What are construction bonds?
Construction bonds are financial guarantees required on public projects to ensure the contractor completes the work as agreed and pays all subcontractors and suppliers. If a contractor fails to meet their obligations, the bond protects the project owner and others involved.
Do you need a construction bond in Washington?
You’ll typically need a construction bond in Washington if:
- You’re bidding on a public construction project
- The contract exceeds $150,000 (or the project does not qualify for the retainage alternative)
- You’re a general contractor awarded the job
- The project requires a bid bond at submission
- The contract requires performance and payment bonds before work begins
For smaller public works projects ($150,000 or less), contractors may request that the public entity waive performance and payment bonds and instead retain 10% of the contract amount until project completion and final approvals.
Most private construction projects do not require bonds unless specified in the contract.
Washington Construction Bond Requirements (Legal Overview)
Washington’s public construction bonding requirements are governed by:
- RCW 39.08.010 (performance and payment bonds)
- RCW 39.08.015 (public entity liability)
- RCW 39.04.155 (small works roster and alternative procedures)
- Performance and payment bonds are typically required for public works contracts.
- Bid bonds are not mandated by state statute but are commonly required by public entities (often 5% of the bid amount).
- Bonds must generally equal 100% of the contract amount.
- For contracts $150,000 or less, contractors may request 10% retainage in lieu of bonds.
- In some cases, public entities may reduce bond requirements (not less than 25%) by ordinance.
In simple terms, most public projects in Washington require bonding, but smaller projects offer flexibility through retainage instead of traditional bonds.
What types of construction bonds are required in Washington?
1. Bid Bond
You must submit a bid bond with your bid to guarantee you’ll accept the contract and provide the required bonds if awarded.
Apply for a Washington Bid Bond
2. Performance Bond
A performance bond ensures the project is completed in accordance with the contract terms.
Apply for a Washington Performance Bond
3. Payment Bond
A payment bond guarantees that subcontractors, laborers, and suppliers are paid as promised.
Apply for a Washington Payment Bond
4. Washington Contractor License Bond
Washington requires a contractor license bond for most contractors as part of the state licensing process through the Washington State Department of Labor & Industries (L&I).
Bond requirements include:
- General contractors: $30,000 bond
- Specialty contractors: $15,000 bond
This bond protects consumers and the state from financial harm if a contractor violates licensing laws or fails to meet contractual obligations. Contractors must file this bond before obtaining or renewing a license, and it must remain active for the duration of the license.
Learn more about Washington contractor license bond requirements →
Apply for a Washington contractor license bond →
Construction Bond vs Insurance vs License Bond
| Type | Purpose |
|---|---|
| Construction bond | Guarantees project completion and payment |
| Contractor bond | Required for contractor registration with Washington L&I ($30,000 for general contractors; $15,000 for specialty contractors) |
| Insurance | Covers accidents, damage, and liability |
How much do Washington construction bonds cost?
Construction bond costs depend on:
- Project size (bond amount)
- Contractor financial strength
- Experience and track record
- Credit score
Typical Cost Range:
- 0.5%–3% of the total bond amount for well-qualified contractors
- Higher rates for new businesses, lower credit, or higher-risk projects
Example:
- $500,000 project → ~$2,500–$15,000 bond cost
Apply in minutes to get a fast, competitive quote from ZipBonds.
How to Get Your Construction Bond in Washington
Getting bonded is simple with ZipBonds:
Step 1: Apply Online
Submit a short application with basic business and project details.
Step 2: Submit Supporting Documents (if needed)
For larger projects, you may need:
- Business financial statements
- Work-in-progress (WIP) schedule
- Project details and contract information
- Resume of completed projects
- Personal financials (for larger bonds)
Step 3: Get Approved
We approve many bonds within 24 hours — often the same day.
Step 4: Receive Your Bond
Once approved and paid, your bond is issued and ready for submission.
Construction Bonds in Major Washington State Cities
Construction Bonds in Seattle
Public works projects follow Washington state bonding requirements, with additional requirements outlined in Seattle bid documents. Contractors can view current opportunities through the City of Seattle procurement portal.
Construction Bonds in Spokane
Most municipal projects require performance and payment bonds consistent with state law. Contractors can explore bid opportunities through the City of Spokane procurement portal.
Construction Bonds in Tacoma
Tacoma public works projects generally require bonding in line with Washington state law, with project-specific requirements outlined in bid documents. Contractors can review opportunities through the City of Tacoma procurement site.
Common Reasons Construction Bonds Get Denied
Construction bond approvals depend on financial strength, experience, and project fit. Common reasons for delays or denials include:
- Limited financial history or weak financials
- Low credit score
- Taking on a project larger than past experience
- Incomplete or inaccurate application information
ZipBonds works with contractors to overcome these challenges, including hard-to-place bonds, and find the best available bonding options. Call us at (888) 435-4191 or email support@zipbonds.com to speak with an agent about your options.
What happens if someone files a claim on my bond?
If a contractor fails to meet contractual obligations or pay subcontractors, the project owner or affected parties may file a claim against the bond.
The surety will investigate the claim and may:
- Pay valid claims
- Arrange for project completion
- Seek reimbursement from the contractor
Claims are relatively rare among qualified contractors, but they highlight the importance of strong financials and project management.
FAQs About Washington State Construction Bonds
Yes, for most public construction projects that meet the state threshold requirements.
Public works projects generally require performance and payment bonds. For contracts over $150,000, bonds are typically required. For projects costing $150,000 or less, contractors may request that the public entity retain 10% of the contract amount in lieu of bonds.
Most contractors pay between 0.5% and 3% of the bond amount.
Stronger credit helps secure lower rates, but many contractors can still get approved with less-than-perfect credit.
Yes, though rates may be higher depending on your financial profile.
Many bonds can be approved the same day, especially for smaller projects.
Usually no, unless required by the project owner or contract.
Typically, no — bonding requirements usually apply to general contractors.
Apply for a Construction Bond Today
Need a performance and payment bond for your next project? Gather essential information like your bid amount, bid date, business history, and credit score, and we’ll do the rest. Select your state below to begin our simple bonding process. Call (888) 435-4191 or email support@zipbonds.com to speak directly with an agent.
About ZipBonds.com
Founders Ryan Swalve and Zach Mefferd formed the vision for ZipBonds.com when they realized how overly complicated it was to help clients place surety. The frustration of being unable to incorporate the technology they’d used in other insurance-focused projects left them thinking “there has to be a better way.”
Fast forward a couple of years, and that better way is the impetus of everything we do at ZipBonds. We constantly look for innovative ways to improve the bonding process for our clients and agents. Our team comprises individuals who understand all angles of surety – for companies, agencies, and individuals. Incorporating everyone’s point of view to improve the process while simultaneously integrating cutting-edge technology is what sets our business apart.