The AIA A312 performance bond is the construction industry’s standard surety bond, published by the American Institute of Architects, that guarantees a contractor will finish a project according to the construction contract. If the contractor defaults, the surety company that issued the bond must step in and either arrange completion or pay the owner’s losses, up to the bond’s dollar limit. Federal law requires performance bonds on government construction contracts exceeding $150,000, and most private owners on large projects demand them too.1U.S. General Services Administration. FAR Subpart 28.1 – Bonds and Other Financial Protections Premiums generally run between 1% and 5% of the contract price, paid by the contractor and built into what the owner pays.
Who’s on the Hook
The bond creates a three-way relationship. The principal is the contractor who promised to build the project. The obligee is the owner who stands to lose money if the contractor walks off or performs badly. The surety is the bonding company backing the contractor’s promise with its own money. If the principal fails to perform, the surety owes the obligee a duty to make things right, up to the face amount of the bond.2AIA Contract Documents. A312-2010 Performance Bond
A construction lender financing the job isn’t a party to the construction contract and so has no direct claim under a standard bond. To close that gap, the surety can issue a dual obligee rider that adds the lender as a second obligee without raising the bond’s dollar cap. Both obligees are then subject to the same defenses the surety could raise against either one.
Performance Bond Versus Payment Bond
AIA Document A312 actually packages two bonds together, and confusing them is the most common mistake owners and subcontractors make.
- The performance bond protects the owner. It guarantees the contractor will complete the work. If the contractor defaults, the surety must arrange completion or pay damages.
- The payment bond protects subcontractors, laborers, and material suppliers. It guarantees they will be paid for labor and materials even if the general contractor doesn’t pay them.
Under the payment bond, a “claimant” is anyone with a direct contract with the general contractor or a subcontractor to furnish labor, materials, or equipment, which reaches to utility services, equipment rentals, and architectural or engineering services tied to the contractor’s work.3Case Western Reserve University. AIA Document A312 – Performance Bond and Payment Bond The two bonds are usually issued together for a single premium, but each has its own independent liability cap.4AIA Contract Documents. Summary: A312-2010, Performance Bond and Payment Bond
How to Trigger the Surety’s Obligations
You cannot simply call the surety and complain that the contractor is doing a bad job. The A312 sets out a precise sequence, and skipping any step can void coverage. Sureties and their lawyers scrutinize compliance, so treat each step as mandatory.
Step 1: Send a Pre-Default Notice
The owner must notify the contractor and the surety in writing that the owner is considering declaring a contractor default, and must request a conference among all three parties to discuss how to get the project back on track. The conference has to be scheduled no later than fifteen days after the contractor and surety receive the notice.3Case Western Reserve University. AIA Document A312 – Performance Bond and Payment Bond
If all three parties agree at the conference, the contractor can be given reasonable additional time to finish the work, and granting that extension does not waive the owner’s right to declare a default later. The notice itself has to be clear and unequivocal. Vague complaints about quality or pace won’t satisfy the requirement.
Step 2: Declare the Contractor in Default
If the conference doesn’t fix the problem, the owner formally declares the contractor in default and terminates the contractor’s right to complete the work. This declaration cannot happen earlier than twenty days after the contractor and surety received the Step 1 notice, which gives both a real window to cure before the owner acts.3Case Western Reserve University. AIA Document A312 – Performance Bond and Payment Bond
Step 3: Demand Performance From the Surety
After declaring the default, the owner sends a written demand to the surety to perform under the bond. The owner must also agree to pay the balance of the contract price, meaning the amount still owed after accounting for prior payments and proper adjustments, to the surety or to whatever replacement contractor finishes the job.3Case Western Reserve University. AIA Document A312 – Performance Bond and Payment Bond
The Owner Default Trap
The surety’s obligations only kick in if there is no owner default. If the owner has failed to make progress payments or has otherwise breached the construction contract, the surety can refuse to act.3Case Western Reserve University. AIA Document A312 – Performance Bond and Payment Bond Before sending any default notice, an owner should confirm that every required payment has been made and every owner obligation under the contract has been met. A surety investigating a claim looks for owner defaults as a first line of defense.
What the Surety Can Do After a Valid Default
Once the owner has properly triggered the bond, Section 5 gives the surety several paths. The choice depends on project complexity, how much money is left in the contract, and how far along the work was.
- Have the original contractor finish. With the owner’s consent, the surety can arrange for the defaulted contractor to return and complete the project. This happens occasionally when the trouble was financial rather than a competence problem.
- Take over with a replacement contractor. The surety hires and pays a new contractor and manages the completion itself.
- Solicit competitive bids. The surety obtains bids from qualified contractors, selects one, and pays the difference between the remaining contract balance and the actual cost to finish, up to the bond amount.
- Pay the owner directly. The surety writes a check for the cost to complete, and the owner finds a replacement contractor on its own.
- Deny the claim. If the surety concludes that the owner failed to follow the bond’s procedures, committed an owner default, or otherwise lacks a valid claim, it can refuse to perform.
If the surety doesn’t move with reasonable promptness after the owner’s demand, the owner can send a second written notice. The surety is considered in default of the bond itself seven days after receiving that additional notice, and the owner can then pursue any available legal remedy.5AIA Contract Documents. AIA Document A312-2010 Performance Bond
What the Bond Pays For
The surety’s financial exposure under Section 7 goes beyond just the cost of finishing the physical work. There are three categories of covered damages:
- The cost to complete the remaining work and correct any defective work the defaulted contractor left behind.5AIA Contract Documents. AIA Document A312-2010 Performance Bond
- Legal fees, design professional fees, and delay costs resulting from both the contractor’s default and the surety’s own actions or inaction under Section 5.5AIA Contract Documents. AIA Document A312-2010 Performance Bond
- Liquidated damages if the construction contract specifies them, or actual damages if it does not.6The American Institute of Architects. AIA Document A312 – 2010 Performance Bond
Whichever option the surety elects, total liability is capped at the bond amount, and the surety’s responsibilities cannot exceed whatever the contractor’s own obligations were under the construction contract.5AIA Contract Documents. AIA Document A312-2010 Performance Bond
What the Bond Does Not Cover
The surety is not liable for contractor obligations unrelated to the construction contract. If the contractor owes the owner money from a separate deal or an earlier project, the bond doesn’t reach it, and the owner cannot reduce the contract balance to offset those unrelated debts.5AIA Contract Documents. AIA Document A312-2010 Performance Bond
The bond also doesn’t cover failures caused by design defects. A contractor default means the contractor failed to comply with a material term of the construction contract. If the project has problems because the architect’s drawings were wrong, that isn’t the contractor’s fault and the surety has no obligation. The line between a construction defect and a design defect is often blurry, and disputes over that distinction are common in bond litigation.
Deadline to Sue
Any lawsuit or legal proceeding under the performance bond must be filed within two years after the earliest of three events: the owner declared a contractor default, the contractor stopped working, or the surety refused to perform its bond obligations.7AIA Contract Documents. AIA Document A312 – 2010 Performance Bond If a court finds that two-year period unenforceable under local law, the shortest limitations period available to sureties in that jurisdiction applies instead. Miss the deadline and the claim is forfeited no matter how strong the underlying case is.
What a Performance Bond Costs
The contractor pays the premium, though the cost is usually baked into the overall contract price the owner sees. Premiums generally run between 1% and 5% of the total contract value. A well-established contractor with strong financials and a clean record will land at the low end, while a newer firm, one with a history of claims, or one taking on a project at the edge of its capacity will pay significantly more. The surety underwrites the contractor much like a lender underwrites a borrower, weighing credit history, financial statements, work-in-progress reports, and bonding capacity.
Because the performance and payment bonds are typically issued together for a single premium, asking the surety to break out the cost of each can help you understand what you’re paying for. On a $2 million project, a 2% combined premium works out to roughly $40,000 in bonding costs built into the contract price. The bond amount itself is typically set at 100% of the construction contract price, giving the owner full-value coverage.8AIA Contract Documents. Instructions: A312-2010, Performance Bond and Payment Bond