ADU Design & Construction Experts Serving San Bernardino, Riverside & Beyond

At G & R Custom Builders, Inc we build all types of ADUs including garage conversions, detached units, and additions designed to blend perfectly with your property. With years of experience across the Inland Empire, we know how to create ADUs that meet local codes, maximize space, and add lasting value to your home.

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A bathroom with white subway tile, a shower curtain, and a mirror with a black frame reflecting the shower.
A man in a bathroom installing a mirror, wearing a tool belt. Light blue shirt, brown pants, and wood-look wall.

ADUs Built With Experience and Precision

Garage Conversions

Turn your unused garage into a fully functional living space. We design smart layouts that add comfort, value, and privacy.

Home Additions

Seamlessly expand your home with an attached ADU that blends perfectly with your existing structure.

Detatched ADU's

Create a standalone unit that gives guests or tenants their own space while adding income potential to your property.

Custom ADU

We bring your ideas to life with tailored ADU plans built around your needs, style, and budget.

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