Retention exists to give the owner security that the work will be finished and corrected. The problem is that it is frequently held long past the point where any legitimate reason remains, leaving contractors and subcontractors waiting on money they earned months earlier. Because retention is withheld from every payment, the accumulated sum at closeout can be the largest single piece of a project’s profit.
California treats wrongful retention withholding the same way it treats other late payments — with a two-percent-per-month penalty and prevailing-party attorney’s fees — so a retention fight carries real teeth.