The main disadvantage of utilizing a PRD is increased cost. A portion of any assessment or special tax must be used to pay County staff for administrative time related to the PRD. In addition, because the funds raised by a PRD are public monies, the PRD is required to pay prevailing wage and follow bid procedures as outlined in the Public Contract Code related to its project, which can increase costs and the timing of a project. Finally, the PRD can only finance capital improvements over a maximum of a ten (10) year period. This will often result in a higher annual tax assessment than would be expected under other funding means with a longer repayment period.