Your one-stop shop for the many tools and resources we offer
ADU Calculator
Estimate the cost of converting part of your home or constructing a new ADU. You can even use this tool to think through the return on investment (ROI) of building an ADU.
ADU Glossary
Feeling confused by all the jargon? This resource helps explain some of the common terminology you’ll hear when working on your ADU project.
ADU Workbook
A complete guide to planning an accessory dwelling unit for Marin County.
FAQs
See answers to all the FAQs listed throughout the site, from getting started through move-in.
Feasibility Consults
Meet with our ADU expert for a customized consultation that outlines what you can build and what you need to do.
Floorplans Gallery
Browse a gallery of real-world ADU floorplans and get inspiration from layouts, storage, and more.
Local ADU Rules
Learn about the ADU rules in your jurisdiction. Check out this resource for a brief overview of the ADU and Junior ADU policies in your city or unincorporated county.
Pre-Approved Plans
Search for your local gallery of ADU plans or units ready for purchase (or free use!), saving you time and money. Galleries also include any locally pre-approved plans.
