Retention bond
A retention bond is an insurance-backed guarantee used in lieu of cash retention, letting contractors receive full payment while giving the principal contract security.
Ask Chalkline about this →A retention bond is an insurance-backed guarantee used in building contracts as an alternative to holding cash retention. Instead of the principal or head contractor withholding a percentage of each progress payment, the contractor provides a bond (issued by an insurer or bank) that the principal can call on if the contractor fails to rectify defects or complete the work.
The bond allows the contractor to receive full progress payments without the cash-flow hit of having retention withheld. The principal still holds security of equivalent value. In Queensland, trade contractors have a statutory right under the QBCC Act to substitute an approved security instrument of equivalent value in place of cash retention.
Retention bonds are more common on commercial and multi-residential projects than on standard residential house builds, where cash retention remains the norm. On residential work, a contractor can still negotiate to offer a retention bond at contract stage; acceptance is at the principal’s discretion.
Also known as: retainage bond, defects bond.
Category: Contracts & commercial.
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Last updated: 2026-05-08. Verified: 2026-05-08. Quarterly review for currency.