What fees are charged for ADU/JADU permits and plan review?

The main fees associated with the build of your ADU/JADU include plan check fees, building permit fees, and impact fees. Most permit fees are based on the project’s total cost valuation or square footage. Additional flat rate fees include electrical, plumbing, and mechanical permit fees. The following fees are waived for ADU builds less than 750 sq feet: impact fees, general plan maintenance, street maintenance, and bedroom taxes.