What a maintenance bond does
A performance bond guarantees you will finish the work. A maintenance bond picks up where that leaves off: it guarantees the work you finished will hold up. For a defined period after the owner accepts the project, the bond stands behind your obligation to correct defects in workmanship and materials.
Public agencies commonly require one on infrastructure and site work, where a defect that surfaces a year later is expensive and the agency wants recourse that does not depend on the contractor still being in business.
Maintenance bond or warranty bond?
Usually the same product under two names, and owners use the terms loosely. Some specifications also call it a guarantee bond. What decides your obligation is the bond form and the contract clause it attaches to, not the label — so read the wording rather than assuming what the name implies.
Check your performance bond first
This is the mistake worth avoiding. Many performance bonds already carry a maintenance obligation for a period after completion, written into the form. If yours does, and the owner asks for a separate maintenance bond, you may be buying coverage you already have.
Other contracts do it the other way around: the performance bond is released at acceptance and a standalone maintenance bond takes over for the warranty period. Both structures are normal. Send us the specification and we will tell you which one you are dealing with before you pay for anything.
What it covers, and what it does not
- Covered: defective workmanship and defective materials that appear during the warranty period, where the contract makes you responsible for putting them right.
- Not covered: ordinary wear and tear, damage from misuse or neglect, work performed by others, or design defects that were not yours.
- Not insurance. Like every surety bond, if a valid claim is paid you reimburse the surety under your indemnity agreement. The bond protects the owner, not you.
What drives the rate
Premium is a percentage of the bonded amount, and the bonded amount is normally a percentage of the contract set by the specification. Because the obligation is narrower and shorter than a performance bond, rates are generally lower. The factors that move it:
- The length of the warranty period — a longer tail costs more
- The bonded percentage the contract requires
- Your credit, financials, and available capacity
- The type of work, since some trades carry more defect exposure than others
Where it sits in closing a job out
Maintenance bonds tend to arrive at the same moment as the rest of closeout — the point where the owner is releasing final payment and retention. That is also when the surety is asked for a consent of surety to final payment (AIA G707 on AIA-form jobs). Handling both together is faster than discovering the maintenance requirement after you thought the job was done.
Send us the contract or the bond specification and we will tell you what is actually required and what it will cost. Or start a contract bond quote. Underwriting always applies and we never promise guaranteed approval.