100 Best ADU Builders in Los Angeles, California
Verified ADU contractors and builders in Los Angeles, CA
Showing 1–30 of 100 listings — Page 1 of 4
2 Brothers ADU Company
A.D.U. Builders
Ace Design & Build
Addition Builders La
ADU by Kn Remodeling
ADU California Modern Design
Transform your Los Angeles property with modern accessory dwelling units designed to maximize space and add valuable rental income or multi-generational living options. Our expert team specializes in contemporary ADU construction, from initial design through permitting and completion, helping you navigate local regulations and build the perfect secondary residence.
ADU Concepts
ADU Contractors Hollywood
Specializing in accessory dwelling unit construction throughout Los Angeles, this contractor provides comprehensive ADU design and building services to help homeowners maximize their property value and rental potential. From initial permitting and planning to final inspections, they deliver expert craftsmanship tailored to Los Angeles building codes and neighborhood requirements.
ADU Design
ADU Garage Conversion & Addition
ADU Los Angeles
Specializing in accessory dwelling unit construction throughout Los Angeles, we deliver expert design and build services to maximize your property's potential with compliant, quality ADU projects. From permits to completion, our experienced team handles every phase of creating additional living space on your residential property.
ADU Powerhouse
ADU Program by CES
Adu Specialist Group
ADU USA
ADU West Coast
ADU XPERT
ADU360
Aduscale
Alpha Pro Builders Los Angeles - Kitchen, Bathroom & ADU Remodeling
Anaheim ADU Builders
Angelus Construction
AP Remodeling Inc.
Arch Construction & ADU Builders
Avalin Design Construction Co
B West Builders | General Contractors
Beyond Builder
Black Wall Builders - General Contractor & Home Remodeling
Blackstone Remodeling
Blue Ocean ADU & Construction
Frequently Asked Questions — ADU Builders in Los Angeles
How much does it cost to hire an ADU builder in Los Angeles?
ADU construction costs in Los Angeles, California vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Los Angeles to get accurate quotes for your specific project.
How long does it take to build an ADU in Los Angeles?
In Los Angeles, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on California local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Los Angeles?
Yes, a building permit is required for ADU construction in Los Angeles, California. Your ADU builder will typically handle the permit application as part of their service. California has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Los Angeles?
Common ADU types in Los Angeles include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Los Angeles ADU builder can advise on what's allowed on your specific parcel.