As noted above, contract surety bonds ensure construction projects are completed as agreed, subcontractors and suppliers get paid, and work meets required standards. These bonds protect project owners and create accountability for contractors.
A bid bond guarantees that when you submit a bid for a construction project, you will honor your proposal, if selected. It assures the project owner you have the financial ability and intent to sign the contract and provide the required performance and payment bonds. If you withdraw your bid or fail to sign the contract, the surety covers the owner’s financial loss, usually the difference between your bid and the next lowest one.
Bid bonds are typically required for public works projects and many private contracts. They help filter out unqualified bidders and reduce the risk of project delays caused by unreliable contractors. In most cases, the bond amount equals a small percentage of the total bid, often 5% to 10%, which is enough to discourage careless or speculative bidding.
A performance bond ensures an entity completes the project according to the contract terms, specifications, and schedule. It protects the project owner if the entity fails to perform or default on the job. When a default occurs, the surety may step in to finance completion, hire another contractor, or pay the owner up to the bond amount.
Performance bonds are often required on public construction projects and large private contracts because they safeguard taxpayers and investors from unfinished or defective work. The cost of a performance bond depends on your credit, financial stability, and project size. Strong business and solid credit histories often lead to lower premiums and faster approvals.
A payment bond guarantees an entity will pay subcontractors, laborers, and suppliers involved in the project. This protects those parties from nonpayment and helps prevent liens against the property.
If you fail to pay, the surety compensates the unpaid parties and then seeks reimbursement from you.
Payment bonds are often issued along with performance bonds, forming a complete contract surety package. They are required under the Miller Act for federal projects exceeding $150K and under similar state laws for public works. For contractors, maintaining timely payments and accurate records helps avoid claims and builds trust with both sureties and project owners.
A maintenance bond (also called a warranty bond) covers defects in workmanship or materials that appear after project completion. It ensures that the principal entity repairs or replaces faulty work within a set period, often 1-2 years. This bond gives project owners confidence that the entity will stand behind their work, even after final payment.
Maintenance bonds are common in road, bridge, and public infrastructure projects where long-term performance matters. By securing a maintenance bond, you show commitment to quality and accountability. This can strengthen your reputation and help you qualify for future contracts.