DISCLAIMERS All ADU Listings: Please note that the Plan Access Fee is only to use a pre-approved plan, which you will need to work with the designer to access and use. Additional fees for site-specific submittals and other services will apply and will depend on the services you need, the ADU professional you select, and your site. Federally-Certified Off-Site and State-Certified Off-Site Listings: Pre-fab ADU companies oftentimes have a suite of services that can handle the ADU project from start to finish (e.g., permitting, site work, building ). This may mean the cost of the plan is rolled into their entire price model and shown here as $0. This does not mean the work will be free, just that the company does not sell its designs separately from other services.