ADU Construction
Professional ADU Construction services throughout Southern California, including detached ADUs, garage conversions and custom backyard homes built for long-term value.
Custom Accessory Dwelling Units designed to expand your living space, increase property value and create new income opportunities throughout Southern California.
More Space. More Value. More Freedom.
Accessory Dwelling Units (ADUs) are one of the smartest investments for homeowners in Southern California. Whether you’re looking to generate rental income, create space for family members, build a private home office, or increase your property’s market value, a professionally designed ADU provides long-term flexibility and financial benefits.
ADU Construction Solutions
From detached backyard homes to garage conversions and Junior ADUs, Cali-Mex Construction provides custom ADU construction solutions designed around your property, lifestyle and long-term goals.
Not sure which ADU option is right for your property? If you are considering transforming an existing garage into a livable unit, explore our Garage Conversion Services for more details about this type of project.
Request a Free ConsultationFrom Vision to Final Build
Cali-Mex Construction guides you through every stage of your ADU project, from the first consultation to permits, construction and final delivery.
Consultation
We discuss your goals, budget and vision for your ADU project.
Site Evaluation
We review your property layout, access, utilities and construction possibilities.
Design & Planning
We help develop a practical ADU plan that fits your property and long-term needs.
Permits & Approvals
We coordinate the permit process and help keep your project moving forward.
Construction
Our team manages the build with quality craftsmanship and clear communication.
Final Walkthrough
We review the finished ADU with you and make sure every detail is complete.
Built With Quality. Managed With Care.
Building an ADU requires planning, coordination, craftsmanship and a clear understanding of residential construction. Cali-Mex Construction brings dependable service, quality workmanship and honest communication to every phase of your project.
Licensed & Insured
Your ADU project is handled by a qualified construction team committed to professional standards.
Permit Guidance
We help guide the planning and permit process so your project can move forward with confidence.
Clear Communication
We keep you informed through every stage, from consultation to final walkthrough.
Quality Craftsmanship
Every detail is built with care, durability and long-term value in mind.
ADU Questions Answered
Get answers to some of the most common questions homeowners ask about Accessory Dwelling Units, permits, timelines and construction.
What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary residential unit built on the same property as a primary residence.
How much value can an ADU add to my property?
An ADU can significantly increase property value by adding usable living space and creating rental income opportunities.
Can I convert my garage into an ADU?
Yes. Garage conversions are one of the most popular and cost-effective ADU solutions available.
How long does it take to build an ADU?
Timelines vary based on permits, design complexity and construction requirements.
Do I need permits for an ADU?
Yes. Most ADU projects require permits and approvals before construction can begin. For additional information regarding ADU regulations and housing guidelines, homeowners may consult the California Department of Housing and Community Development
Can an ADU be used as a rental property?
In many cases yes, depending on local regulations and current requirements.
Ready to Build Your ADU?
Whether you’re planning a detached ADU, garage conversion or custom backyard home, our team is ready to help bring your vision to life with quality craftsmanship and professional guidance.