Bid Bonds vs. Performance Bonds for Dirt Work Projects
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If you're bidding site work, utility installation, grading, or excavation projects, you've probably encountered bond requirements. Many contractors understand they need a bond to submit a bid or start a project, but they aren't always clear on the difference between a bid bond and a performance bond.
Understanding bid bonds vs. performance bonds for dirt work projects is important if you want to compete for larger municipal, commercial, and government-funded jobs. Knowing when each bond is required can help you avoid delays, qualify for more opportunities, and build credibility with project owners and general contractors.
The Quick Answer: Bid Bonds vs. Performance Bonds
A bid bond guarantees that a contractor who submits a bid will enter into the contract and provide required bonds if awarded the work.
A performance bond guarantees that the contractor will complete the project according to the contract requirements.
In simple terms:
A bid bond applies during the bidding phase.
A performance bond applies after the contract is awarded.
A bid bond helps ensure the contractor stands behind their bid.
A performance bond helps provide assurance the project will be completed.
Many public dirt work projects require both bonds.
Why Bonds Matter in Dirt Work and Excavation
Excavation contractors handle critical aspects of construction projects.
Your work often includes:
Site preparation
Mass grading
Utility trenching
Stormwater installation
Road construction
Land clearing
Septic installation
Underground utility work
When project owners hire a contractor for these services, they want confidence that the work will be completed as agreed. Bonds help provide that confidence.
This is especially important on projects involving public funds, municipal infrastructure, schools, roads, sewer systems, and utility improvements.
Understanding How Surety Bonds Work
Before comparing the two bond types, it helps to understand the basics.
A surety bond is a three-party agreement involving:
Principal: The contractor obtaining the bond.
Obligee: The project owner or entity requiring the bond.
Surety: The company issuing the bond.
If the contractor fails to meet a bonded obligation, the obligee may file a claim. Depending on the facts, bond language, and investigation findings, the surety may respond according to the bond terms.
Unlike insurance, the contractor is generally responsible for reimbursing the surety for valid claim payments.
Explore more in our blog: Surety Bonds for Excavation Contractors: A Plain-English Guide
What Is a Bid Bond?
A bid bond is typically required before a project owner accepts a contractor's bid.
The bond provides assurance that the contractor:
Submitted the bid in good faith
Intends to enter the contract if selected
Can obtain the required performance bond
Has the ability to complete the project
Without bid bonds, project owners could face costly problems when contractors submit bids they cannot support.
Why Project Owners Require Bid Bonds
Imagine a city receives bids for a major sewer extension project.
One contractor submits the lowest bid and wins the job. After the award, that contractor realizes they underestimated costs and decides not to proceed.
The municipality now has to re-bid the project or negotiate with another contractor, causing delays and additional expenses.
A bid bond helps reduce this risk.
Common Dirt Work Projects Requiring Bid Bonds
Bid bonds are frequently required for:
Municipal utility projects
Storm sewer construction
Road building projects
Public grading contracts
Site development work
Water main installations
Government infrastructure projects
As excavation companies grow into larger public projects, bid bonds become increasingly common.
What Is a Performance Bond?
Once the contractor is awarded the contract, the project owner may require a performance bond before work begins.
A performance bond helps guarantee that the contractor will perform the work according to the contract requirements.
If the contractor cannot complete the project or significantly fails to meet contractual obligations, the project owner may have rights under the bond, depending on the circumstances and bond terms.
Why Performance Bonds Matter
Excavation projects often involve significant financial investment.
For example, a county may hire a contractor to:
Install new drainage systems
Construct roadways
Complete utility excavation
Perform large-scale grading
If the contractor walks off the project halfway through construction, the owner may face substantial costs to complete the work.
The performance bond is intended to provide financial protection against that risk.
Common Projects Requiring Performance Bonds
Performance bonds are commonly required for:
Public works projects
Municipal excavation contracts
Utility installations
Infrastructure improvements
Subdivision development
Government-funded site work
Many projects requiring bid bonds later require performance bonds as well.
Key Differences Between Bid Bonds and Performance Bonds
While both are surety bonds, they serve different purposes.
Timing
A bid bond comes first.
It applies during the bidding process.
A performance bond comes later.
It applies after the project is awarded and construction begins.
Purpose
The bid bond guarantees commitment to the bid.
The performance bond guarantees completion of the work.
Risk Being Protected
Bid bonds protect against contractors failing to honor their submitted bids.
Performance bonds protect against contractors failing to perform according to the contract.
Duration
Bid bonds are generally tied to the bidding process and contract award period.
Performance bonds remain in effect throughout the construction project according to bond terms.
Do Excavation Contractors Need Both?
Often, yes.
Many public agencies require:
Submission of a bid bond with the proposal.
Performance bond after contract award.
In some cases, a payment bond as well.
A payment bond helps protect subcontractors, suppliers, and vendors by helping ensure qualifying parties are paid according to contractual requirements.
The exact requirements vary by:
State
Municipality
Project owner
Contract value
Project scope
Always review bid specifications carefully.
How Contractors Qualify for Bid and Performance Bonds
Bonding is different from buying insurance.
Sureties usually evaluate whether your company has the financial strength and experience necessary to complete projects successfully.
Financial Strength
Underwriters may review:
Business financial statements
Cash flow
Working capital
Debt obligations
Business assets
Financially stable contractors often have an easier time obtaining larger bond programs.
Work Experience
Sureties typically want to see a successful track record.
This includes:
Similar project experience
Years in business
Management expertise
Past project performance
An excavation company that has completed similar utility or grading projects is often viewed more favorably than one attempting a significantly larger project for the first time.
Credit History
Both business and personal credit may be considered.
Strong credit can support bonding applications, while credit issues may require additional underwriting review.
Company Reputation
Sureties may also evaluate:
Contract disputes
Prior bond claims
Legal issues
Project completion history
A strong reputation can be a valuable asset when pursuing bonded work.
How Much Do Bid Bonds and Performance Bonds Cost?
Contractors frequently ask about the cost of bonding.
The answer depends on multiple factors.
Estimated costs vary based on:
Bond amount
Project value
Contractor experience
Financial condition
Credit history
Claims history
Project complexity
For many qualified contractors, bond costs may represent a relatively small percentage of the total contract value. Contractors with limited experience or financial challenges may see higher costs.
These are only estimates. Actual bond costs vary significantly by contractor, project, state, underwriting requirements, and surety company.
A licensed bonding professional can provide accurate pricing for a specific project.
Bonding Helps Contractors Grow
Many successful excavation companies view bonding as more than just a requirement.
Bonding can help businesses:
Pursue larger contracts
Enter public bidding markets
Build trust with GCs
Improve credibility
Expand service areas
Increase revenue opportunities
Contractors who maintain strong financial records and a positive project history often position themselves for greater bonding capacity over time.
Insurance Coverage Still Matters
A bond is not a substitute for insurance.
Even highly bonded contractors need insurance protection for everyday job site risks.
General Liability Insurance
General liability insurance helps protect against claims involving bodily injury, property damage, and certain legal expenses arising from construction operations.
This coverage is commonly required by project owners before work begins.
Inland Marine Insurance
Inland marine insurance, also known as an equipment floater, helps cover equipment while it is transported or used away from your primary business location.
This may apply to:
Excavators
Skid steers
Dozers
Attachments
Trenchers
Compaction equipment
Commercial Auto Insurance
Commercial auto insurance helps protect trucks, trailers, and vehicles used in business operations.
Excavation contractors often rely heavily on this coverage because equipment and crews travel between job sites daily.
Workers' Compensation Insurance
Workers' compensation insurance provides benefits to employees who suffer work-related injuries or illnesses.
Excavation work involves significant exposures, including:
Cave-ins
Equipment accidents
Falls
Utility strikes
Struck-by incidents
Pollution Liability Insurance
Pollution liability insurance may help address covered environmental claims involving events such as fuel spills, hydraulic fluid releases, sediment runoff, or disturbed contaminated soil.
Because excavation operations directly affect the ground and underground infrastructure, this coverage is worth discussing with an experienced insurance advisor.
Best Practices for Contractors Pursuing Bonded Work
If you're planning to bid more bonded projects, focus on strengthening your business foundation.
Consider these steps:
Maintain accurate financial records
Complete projects on schedule
Keep strong relationships with suppliers
Improve credit when possible
Monitor cash flow carefully
Manage change orders properly
Document project performance
Good business practices can improve both your bonding opportunities and your overall profitability.
Before performing any excavation work, remember to contact 811 for utility locates. Damage to underground utilities can create major safety and financial issues. Learn more at https://www.call811.com.
Contractors should also stay current with excavation safety requirements. OSHA's trenching and excavation resources provide valuable guidance on job site safety and compliance: https://www.osha.gov/trenching-excavation.
Frequently Asked Questions
What is the difference between a bid bond and a performance bond?
A bid bond guarantees the contractor will honor their bid if awarded the project, while a performance bond guarantees the contractor will complete the work according to the contract requirements.
Are bid bonds required for excavation projects?
Many public works, municipal, and government-funded excavation projects require bid bonds as part of the bidding process.
Do performance bonds protect the contractor?
Performance bonds primarily protect the project owner. They provide assurance that contractual obligations will be fulfilled.
Can a small excavation company get bonded?
Yes. Many small excavation companies qualify for bonding, although available bond limits and pricing depend on experience, financial strength, and underwriting review.
Is a bond the same as insurance?
No. Insurance helps protect the contractor from certain covered losses, while bonds provide guarantees to project owners or government entities.
Get Help With Bonding and Insurance for Your Excavation Business
Whether you're bidding a municipal sewer extension, a road construction project, or a large site development contract, understanding the difference between bid bonds and performance bonds is essential. The right bonding strategy can help you qualify for more opportunities while demonstrating professionalism and financial stability to project owners.
At Excavating Insurance Partners, we help excavation, site work, utility, demolition, drilling, and land clearing contractors navigate bonding requirements and insurance solutions designed for their operations. Contact us today for a free quote and expert guidance tailored to your business.
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