Understanding ADUs (Accessory Dwelling Units)

An Accessory Dwelling Unit (ADU) is a secondary housing unit built on the same lot as an existing single-family home. Often called granny flats, backyard homes, casitas, or in-law suites, ADUs offer homeowners the flexibility to expand their living space, generate rental income, or create private housing for family members—all without needing to purchase new land.

ADUs can take many forms, including:

  • Detached ADU – A separate, stand-alone structure in the backyard.
  • Attached ADU – Built as an extension to the existing home.
  • Garage Conversion ADU – Transforming an existing garage into a livable unit.
  • Basement or Interior ADU – Converting part of your home into a private, independent living space.

Why Build an ADU?

ADUs are becoming one of California’s most popular housing solutions. Here’s why:

  • Rental Income: Generate monthly income by renting out the unit.
  • Family Housing: Create a private, comfortable space for aging parents, adult children, or guests.
  • Increase Property Value: ADUs can significantly boost the resale value of your property.
  • Affordable Housing Solution: Maximize space without the high costs of purchasing another property.
  • Flexible Use: Use it as a home office, guesthouse, or long-term rental.

ADUs in California: What You Should Know

California has passed pro-ADU laws to help homeowners build faster and more affordably. With reduced permitting timelines, streamlined approvals, and increased design flexibility, it’s easier than ever to add an ADU to your property.

At Blue Diamond General Contractors, we stay up-to-date on the latest ADU building codes, zoning laws, and financing programs to make the process smooth from start to finish.

How We Help You Build Your ADU

When you work with BDGC, you get an end-to-end partner:

  1. Consultation & Feasibility – We assess your property and provide expert guidance.
  2. Custom Design – Tailored floor plans that fit your needs and budget.
  3. Permitting Support – We handle the paperwork so you don’t have to.
  4. Construction & Project Management – From the foundation to the finishes, we manage it all.
  5. Financing Options – Guidance on loans, grants, and programs available to homeowners.

Start Your ADU Project Today

Whether you’re dreaming of a cozy backyard home for family or a modern rental unit for extra income, our team is here to make it happen.

👉 Schedule a free consultation today and discover how easy it is to add an ADU to your property with Blue Diamond General Contractors.