Last Updated: February 2026 by the ZipBonds Team
If you’re bidding on public construction projects in Colorado or working on large commercial jobs, construction bonds are part of doing business.
Colorado contractors most commonly use:
- Bid bonds during the bidding phase
- Performance bonds once a contract is awarded
- Payment bonds to protect subcontractors and suppliers
These bonds are typically required for public works projects and many private developments across Colorado. The rules are similar to national standards, but state laws, agencies, and local governments determine when bonds apply and how they’re filed.
ZipBonds works with Colorado contractors to secure fast approvals and competitive construction bond rates statewide.
Quick Summary: Colorado Construction Bond Requirements
- Public works projects over $50,000 often require performance and payment bonds.
- Bid bonds are common during competitive bidding.
- Private developers may also require bonded contractors.
- Requirements vary by project, agency, and location.
Do contractors in Colorado need construction bonds?
Yes, for most public works projects over $50,000 (local/municipal) or $150,000 (state), per Colorado Revised Statutes (CRS) §§ 24-105-202 and 38-26-105. Contractors in Colorado often need construction bonds when working on public works projects, government-funded contracts, and larger commercial developments. Bonding requirements depend on the project type, funding source, and contract terms.
- Bidding on state or municipal public works projects
- Working on federally funded jobs in Colorado
- Performing large commercial or institutional projects where the owner requires bonding
The most common bonds are bid, performance, and payment bonds, and they are usually tied to the contract amount and funding source.
How Construction Bond Requirements Work
Construction bonds follow national surety principles, but each state applies them through its own public contracting laws, agencies, and project standards.
For the big-picture explanation of how these bonds work, see our Construction Bonds Guide for basics. You can also explore our in-depth resources on Bid Bonds, Performance Bonds, and Payment Bonds.
This page focuses specifically on how those bonds apply in Colorado.
What are construction bonds?
Construction bonds are three-party agreements involving:
- The contractor (principal)
- The project owner or government entity (obligee)
- The surety company that guarantees the contractor’s performance
Bid, performance, and payment bonds ensure that:
- Bids are submitted in good faith
- Projects are completed according to contract terms
- Subcontractors and suppliers are paid
For a full explanation of how surety bonds function, visit our main Construction Bonds resource.
Types of Construction Bonds Used in Colorado
Most Colorado public construction projects involve the same three core construction bonds used nationwide, but how and when they’re required depends on the project.
1. Bid Bonds
Bid bonds are required when Colorado contractors submit proposals for public projects. They assure the project owner that the contractor will enter into the contract and provide the required performance and payment bonds if awarded the job.
- National Standard: Usually a percentage of the bid amount.
- Colorado Context: Frequently required on state and municipal public works bids. On many Colorado public projects, bid security is commonly set at 5% of the bid amount (always confirm the bid documents, as requirements can vary by agency).
2. Performance Bonds
Performance bonds guarantee that the contractor will complete the project according to contract terms. If the contractor defaults, the surety may step in to complete the job or cover losses.
- National Standard: Typically issued for 100% of the contract price.
- Colorado Statutory Context (Public Work): Under C.R.S. § 38-26-106, contractors on many public works contracts must furnish a bond in a penal sum of at least 50% of the total amount payable under the contract before work begins.
Applicability thresholds under this statute include:
- Public works contracts over $50,000 with counties, municipalities, school districts, or other political subdivisions
- Public works contracts over $150,000 with the State of Colorado
Large project exception: For public works contracts valued at $500 million or more, the bond may be set at at least 50% of the maximum amount payable in any calendar year of the contract, rather than 50% of the total contract value.
3. Payment Bonds
Payment bonds ensure subcontractors, laborers, and suppliers are paid. This is especially important on public projects, where mechanics’ liens may not apply in the same way as in private work.
- National Standard: Often paired with performance bonds.
- Colorado Context: Frequently required alongside performance bonds on bonded public works projects, often under the same statutory framework that requires the performance bond.
4. Contractor License Bonds
In addition to bid, performance, and payment bonds tied to specific construction contracts, many contractors in Colorado will also encounter contractor license bond requirements.
A contractor license bond is different from a construction project bond. Instead of guaranteeing performance on a single job, a license bond supports compliance with local licensing rules and regulations. Cities, counties, or other local authorities may require this type of bond as part of the contractor licensing process. For example, Denver general contractors must obtain a $50,000 bond, while Arvada municipal contractors need a $20,000 bond.
Key difference:
- Construction project bonds (bid, performance, payment) are tied to a specific contract.
- License bonds are tied to a contractor’s legal authorization to operate in a jurisdiction.
Not every Colorado contractor needs a state-level license bond, but local governments and specialty trades may require them. Contractors should always check the licensing authority for the city or county where they plan to work.
Learn more about contractor license bond requirements in Colorado.
Bond Comparison
| Bond Type | Purpose | National Standard | Colorado Application |
|---|---|---|---|
| Bid Bond | Ensures contractor will enter contract | % of bid | Common on state & municipal bids; often 5% of bid amount, depending on solicitation |
| Performance Bond | Guarantees project completion | Often 100% of contract | On many public works contracts, statute requires a bond of at least 50% of total contract amount (with specific thresholds and exceptions) |
| Payment Bond | Protects subs & suppliers | Paired with performance | Frequently required on the same public works projects that require performance bonds |
| Contractor License Bond | Guarantees compliance with licensing rules (not tied to a specific project) | Required by some local jurisdictions and trades | May be required by certain Colorado cities, counties, or specialty licensing authorities |
Unlike bid, performance, and payment bonds, contractor license bonds are tied to licensing compliance rather than a specific construction project.
When are construction bonds required in Colorado?
Public Works Projects
Colorado public construction often follows models similar to federal bonding requirements. Under Colorado law, many public works contracts trigger statutory bonding thresholds, and agencies typically require performance and payment bonds once a contractor is awarded the job.
On these projects, bonding requirements are often influenced by state statutes, agency procurement rules, and the project’s funding source.
Municipal & Local Projects
Cities and local authorities may impose their own bonding standards in bid documents. Even when state law sets minimum thresholds, municipalities can specify bond percentages, forms, and additional requirements in the solicitation. Contractors should carefully review each project’s specifications.
Private Commercial Projects
While not mandated by law in the same way as public jobs, many private owners require bonded contractors to reduce risk on larger developments. These bonding requirements come from contract terms rather than statute, and the bond amount, form, and conditions are determined by the owner or developer.
Licensing vs. Project Bonds
Some contractors confuse license bonds with construction project bonds. License bonds are regulatory requirements tied to a contractor’s legal authorization to operate, while bid, performance, and payment bonds are risk-management tools tied to a specific construction contract.
When Construction Bonds May NOT Be Required
- Private projects where the owner waives bonding
- Small public contracts below statutory thresholds
- Certain negotiated or emergency contracts
- Design-build or alternative delivery models
Bonding Requirements in Major Colorado Cities
Public construction in cities such as Denver, Colorado Springs, Aurora, Fort Collins, and other municipalities generally follows the same public works bonding framework seen statewide.
Performance and payment bonds are typically required after contract award, and bid bonds may be required as part of the solicitation process. However, city-level projects can differ in:
- Bond percentages required in bid documents
- Required bond forms
- Contractor registration requirements
- Insurance requirements
- Contractor license bond requirements
Key point: Bonding on municipal projects is driven by the project’s bid documents and procurement rules, not separate city bonding statutes.
Cost of Construction Surety Bonds in Colorado
Bond premiums in Colorado typically follow national underwriting principles. Many qualified contractors pay a small percentage of the bond amount, while higher-risk applicants may pay more depending on credit, experience, and financial strength.
Rates are influenced by:
- Personal and business credit
- Experience and project history
- Financial strength
- Contract size
At ZipBonds, contractors often pay 1-3% of the bond amount if they have good credit. For a deeper cost breakdown, see our national Construction Bonds cost guide.
What Underwriters Look For
Surety underwriters review:
- Personal and business credit
- Experience on similar contracts
- Financial statements
- Work-in-progress schedule
- Project scope
Stronger documentation leads to smoother approvals. Learn more about underwriting.
How to Get a Construction Bond in Colorado
- Submit a bond application
- Provide financial and project details
- Underwriting review
- Approval and rate determination
- Bond issuance
- File bond with the project owner
ZipBonds helps California contractors move through this process efficiently. We also offer a 3-minute pre-qualification process to help you get the bonds you need as quickly as possible.
Common Mistakes Colorado Contractors Make
- Waiting until the last minute to apply
- Underestimating financial documentation requirements
- Assuming bonds are the same as insurance
- Not understanding indemnity agreements
Avoiding these pitfalls helps keep bids on track.
Bond Claims: What happens if there’s a problem?
If a contractor fails to meet contract obligations, the project owner may file a claim against the bond. The surety investigates and may cover costs, but the contractor is typically responsible for reimbursing the surety.
Pro tip: Strong project management reduces claim risk.
FAQs About Colorado Construction Bonds
No. Bond requirements depend on the project’s funding source, owner, and contract terms. Public works projects frequently require performance and payment bonds, while many private projects only require bonds on larger or higher-risk developments.
On many public works contracts, bonding requirements are triggered by project value and the type of public entity involved. Once a contractor is awarded a qualifying public contract, performance and payment bonds are typically required before work begins.
Cities do not typically have separate “bonding laws” for construction project bonds. However, municipal agencies may specify bond percentages, forms, and conditions in their bid documents. Contractors should always review each project’s solicitation.
Many routine bonds can be approved quickly, especially for contractors with an established bonding program. Larger or more complex contracts may require additional underwriting review of financials, work-in-progress schedules, and experience history.
No. A surety bond is a financial guarantee, not insurance. If a claim is paid, the surety typically seeks reimbursement from the contractor.
Not always. While stronger credit helps, sureties also evaluate experience, financial statements, project type, and current workload. Many contractors qualify even with less-than-perfect credit. Learn how ZipBonds strives to make bonds more accessible for your business, no matter your situation in “5 Surety Bond Solutions for Small Business or Bad-Credit Situations.”
If a contractor cannot complete the project, the surety investigates and may finance completion, arrange a replacement contractor, or compensate the project owner up to the bond amount. The contractor is typically responsible for reimbursing the surety for valid losses.
Sometimes. Private owners may require performance and payment bonds on larger commercial or higher-risk projects, but requirements come from contract terms rather than state statute.
Colorado Department of Transportation (CDOT) projects typically include bonding requirements as part of their procurement process. The specific bond amounts and forms are outlined in CDOT bid documents and contract specifications.
Performance bonds count toward a contractor’s single job and total bonded workload limits. Larger projects can temporarily reduce available bonding capacity until the project progresses or is completed.
Performance bonds are commonly issued for 100% of the contract value on public projects. Some statutes and contracts may use different minimum thresholds, but full coverage is standard in many public works contracts.
Contractors may need financial statements, a work-in-progress schedule, project details, contract documents, and business information. Larger projects typically require more detailed underwriting documentation.
Yes. If contract amounts increase due to change orders, the bond amount may also need to increase. The surety typically reviews updated financials and project information before approving changes.
No. License bonds are tied to regulatory compliance and contractor licensing. Bid, performance, and payment bonds are tied to a specific construction contract.
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.