M Builders is a family-owned and operated business specializing in the construction of quality ADUs (Accessory Dwelling Units). Based out of the East Bay, we have honed and shared our craft for over 30 years – a long line of history you can trust! With a focus on the development of ADUs and room additions, our level of expertise is unparalleled! We partner with you and guide you through every step of the process to help bring your vision to life. Carrying out each project from design to completion, the Bay Area’s premier ADU Builder is your one-stop shop for your next major ADU project.