What a supply bond is
A supply bond guarantees a supplier will deliver materials or equipment as the contract says. Public agencies and project owners use them on large supply contracts.
In California
California has no statewide statute requiring supply bonds. The bonds mandated by state law for public works—Cal. Civ. Code § 9550 and Cal. Pub. Contract Code § 7103—are payment bonds running from contractors to protect workers and suppliers, not bonds from suppliers guaranteeing delivery. San Francisco is a documented example of a California local government that maintains a specific supply contract bond requirement for vendors supplying commodities and services to city agencies under S.F. Admin. Code Ch. 21, § 21.10.
- S.F. Admin. Code § 21.10 says a contracting officer 'may require' a bond—it is discretionary, not mandatory, even at the local level.
- The statewide payment bond (Cal. Civ. Code § 9550; Cal. Pub. Contract Code § 7103) protects suppliers from nonpayment on public works but flows in the opposite direction: it runs from the prime contractor to claimants, not from a supplier to the buyer.
- Other California public agencies may require supply bonds purely as a contract term; no second California city's local ordinance was identified in research.
You need this bond if you're
- A material supplier on a public contract
- An equipment vendor or manufacturer
- A distributor supplying a large private project
What the surety looks at
Your business, credit and the supply contract. Large contracts can need financial statements.