Your Trusted Source for ADU Information in California

Navigate the world of Accessory Dwelling Units with expert guidance, from planning and permits to construction and management.

Get expert guidance on ADU regulations, permits, and design considerations for your property.

Explore financing solutions and understand the costs involved in building your ADU.

Find qualified contractors and learn about the construction process from start to finish.

Access our comprehensive library of ADU guides, tips, and best practices.

Download the 2026 guide covering permits, financing, design decisions, and the full ADU process.

Use the printable checklist to stay on track from first planning steps through final inspection.

Tell us about your project and get matched with California ADU contractors that fit your build.

Latest ADU Insights

March 7, 2026

Accessibility features and aging-in-place design for a California ADU that keeps parents nearby.

March 7, 2026

Permit speed, costs, rental income, and property value impact — a side-by-side comparison to help you decide.

March 7, 2026

The up-to-$40,000 grant is not taking new applications. Here is the official status as of October 22, 2026, and where to look next.

Let us help you navigate the process and create your perfect ADU.