In most cases, a plumbing contractor is not permitted to cancel the bond before the completion of the job. The contractor, the surety business, and the obligee are the parties to the contract that constitute the bond. It offers security against financial loss for the whole of the project and up until all of the commitments are satisfied. On the other hand, if the project is finished successfully and all of the duties outlined in the contract have been fulfilled, the contractor may be able to get the surety company's permission to cancel the bond.