OC ADU STUDIO is a trusted ADU builder in Orange County, delivering full-service solutions tailored to homeowners across Irvine, Westminster, Huntington Beach, and Fountain Valley.
We combine hands-on construction expertise with deep knowledge of California ADU regulations, cost planning, and ROI strategies.
OC ADU STUDIO represents a specialized team of ADU professionals focused exclusively on designing and building Accessory Dwelling Units throughout Orange County.
We are not general contractors who "also do ADUs." We are builders who live and breathe ADU construction in California.
Our experience comes from real projects—navigating permits, solving site constraints, managing budgets, and delivering functional living spaces that increase property value.
From concept to completion with expert craftsmanship and on-site precision.
Realistic budgeting, no guesswork, and fiscal clarity from day one.
Expertise in zoning, setbacks, and navigating complex permits.
Build with purpose using modern, code-compliant floor plans for maximum ROI.
Seamless communication between architects, contractors, and city officials.
Energy-efficient materials, solar-ready designs, and green building practices.
At OC ADU STUDIO, expertise is not just claimed—it is earned through hands-on project execution.
Every ADU project comes with unique challenges. We approach each project as a problem-solving process:
OC ADU STUDIO actively creates content to help homeowners make informed decisions:
We proudly serve: Irvine, Westminster, Huntington Beach, and Fountain Valley.
Local Knowledge Matters: From Irvine HOA precision to Huntington Beach coastal regulations, local expertise is essential.
No hidden costs or surprises. Every estimate is clear, itemized, and agreed upon before we break ground.
We recommend only what fits your goals and budget — never unnecessary upgrades or add-ons.
From permit to final walkthrough, you'll always know exactly where your project stands.
Realistic timelines and expectations — we tell you the truth, even when it's not what you hoped to hear.
Your personal information and project details are always kept private and protected.
We're here every step of the way — before, during, and after your ADU project is complete.