A construction bond protects project owners from a contractor's failure to perform. Let's explore why construction bonds are used and how contractors can get them. We will also cover the types of bonds available and the typical bonding requirements for large projects.

Smiling person wearing a hardhat and safety vest at a construction site.
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What are they?

Understanding construction bonds

Construction bonds compensate project owners if the contractor does not meet certain expectations. Typically, the expectations involve project completion timing, quality of work, and payment for materials and subcontractors.

Construction bonds fall under the broader category of surety bonds. Surety bonds have three parties:

  1. Principal: The principal guarantees the fulfillment an obligation. On a construction bond, the principal is a contractor or supplier.
  2. Surety: The surety is the bond issuer. The surety will pay valid claims against the bond, but these amounts are ultimately the principal's responsibility. The surety can pursue reimbursement from the principal.
  3. Obligee: The obligee receives payment from the surety if the principal does not meet the stated obligations. Obligees for construction bonds may be project owners, investors, or subcontractors.

Public works projects and large construction efforts usually require contractors to secure one or more bonds to bid, complete, and warranty their jobs.

Getting one

Getting a construction bond

Contractors needing to secure a bond may contact a surety company directly or work with a surety broker. Either can describe the bond application requirements based on the situation.

To apply for a bond, contractors may need to submit the following information:

  1. Financial statements -- larger projects may require CPA-prepared statements.
  2. Project information.
  3. Credit history.
  4. Information on concurrent bonded projects.
  5. Description of prior experience on similar projects.
  6. Prior bond claims history.

The surety will review the information to assess the contractor's financial strength and creditworthiness. The surety will likely set two bond limits for the contractor: a single-project limit and an aggregate limit. The single-project limit is the maximum size bond the surety will allow for the contractor. The aggregate limit is the total amount of bonded work the contractor can have at once.

For example, a contractor might have a single limit of $250,000 and an aggregate limit of $1,000,000. In this case, the contractor can obtain multiple bonds if each is $250,000 or less and the total bonded amount is not higher than $1,000,0000.

For each bond secured, the contractor will pay a small percentage of the bond amount as a fee to the surety.

Types

Construction bond types

Types of construction bonds include:

  1. Bid bond. Government agencies usually require contractors to submit bid bonds when participating in competitive bidding. The bid bond compensates the project owner if the awarded contractor does not start the project or fails to complete requirements before starting the project.
  2. Performance bond. A performance bond guarantees work quality and fulfillment of other terms and conditions. Awarded contractors must replace the bid bond with a performance bond before work begins.
  3. Payment bond. A payment bond guarantees that the contractor can pay workers, subcontractors, and suppliers. Government projects typically require contractors to provide a payment bond and a performance bond.
  4. Maintenance/warranty bond. Maintenance bonds pay for repairs caused by faulty workmanship. The bond accepts claims for a designated timeframe only.
  5. Mechanic's lien bond. A mechanic's lien bond transfers a mechanic's lien from the property and ties it to the bond instead. Unpaid contractors, subcontractors, and workers can file a mechanic's lien to ensure they get paid if the property is sold.
  6. Supply bond. Suppliers provide supply bonds to protect against supplier default. A project owner or general contractor may request a supply bond on big jobs with large or specific materials requirements.
  7. Completion bond. Completion bonds may compensate the obligee if the contractor does not finish the project on time and without liens.]

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Typical bonding requirements

Typical bonding requirements

Owners of large projects often require four types of construction bonds: a bid bond, a performance bond, a payment bond, and a maintenance bond.

Contractors provide bid bonds with their cost and timeline proposal for the project. The bid bond acts as a vote of confidence that the contractor can complete the project as bid. At this point, the project is not awarded.

If the contractor wins the project, the project owner may require payment and performance bonds before the project starts. These two separate bond types are often issued together. The premium, or the fee the contractor pays for the bond, is typically 1% to 3% of the project bid value.

After project completion, the project owner may require a maintenance bond. The percentage cost on a maintenance bond will vary depending on the length of the warranty period, with longer timeframes carrying higher premiums.

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