Design. Permit. Build.
Full-service ADU design & construction in Los Angeles. From initial concept to permit approval to final build — ADU.X handles everything.
The X Factor in ADUs
ADU.X is the dedicated Accessory Dwelling Unit (ADU) division of X Buildup
Inc. — created to help homeowners unlock the full potential of their property with smart, high-quality backyard homes.
We launched ADU.X to meet the growing demand in Los Angeles for legal, efficient, and design-driven ADU solutions. Backed by over a decade of experience in residential construction, our team brings the same commitment to detail, quality, and customer care that X Buildup is known for — with laser focus on ADU design, permits, and construction.
Whether you’re looking to convert your garage, build a detached ADU for rental income, or create additional living space for family, ADU.X offers a complete solution from start to finish.
ADU.X Services
New ADU
Create a high-value living space that pays for itself. Our team delivers stunning, turnkey ADUs engineered for comfort, efficiency, and long-term ROI. From design to keys-in-hand completion, we make it effortless to add a beautiful new home to your property—and maximize your rental or family-use potential.
Garage Converion
Turn your unused garage into a profitable, lifestyle-boosting living unit. We transform existing structures into modern, fully finished spaces with smart layouts and elevated design. Fast timelines, cost-effective construction, and a dramatic boost in property value make garage conversions one of the smartest upgrades you can make.
SB9
Unlock the full earning power of your property with SB9. Whether you’re splitting your lot or adding a legal duplex, we handle everything—from feasibility to design to construction. SB9 projects are one of California’s most powerful investment opportunities, and we make the process simple, predictable, and highly profitable.
Why ADU.X
Expert, Start-to-Finish Delivery
ADU.X handles everything—design, engineering, permitting, and construction—so homeowners enjoy a smooth, stress-free experience. Our turnkey approach gets your ADU built faster and with unmatched precision.
5-Star Rated Builder You Can Trust
Homeowners choose ADU.X because we’re a proven, 5-star rated builder with a track record of delivering exceptional ADUs and SB9 projects. Our reputation is built on quality workmanship, clear communication, and results that consistently exceed expectations.
High-Value, High-Performance ADUs
We build premium, energy-efficient ADUs engineered for long-term durability and maximum property value. Every project blends modern design with smart functionality to create a space that attracts renters and elevates your home.
Transparent Pricing & Guaranteed Results
With ADU.X, you get upfront pricing, clear timelines, and zero surprises. Our streamlined process and expert team ensure your ADU is delivered on budget, on schedule, and built to the highest standards.
What We Do
What our clients Say
