The Complete Guide to Building an ADU in Los Angeles
- Ran
- May 22
- 2 min read
Accessory Dwelling Units (ADUs) have become one of the most popular home improvement projects in Los Angeles. Whether you want to generate rental income, house a family member, or simply add value to your property, an ADU is a smart investment. Here's everything you need to know before you start.
What Is an ADU?
An ADU (Accessory Dwelling Unit) is a secondary housing unit on a single-family residential lot. In Los Angeles, ADUs can be detached (a separate structure), attached (connected to the main home), or a garage conversion. They typically range from 400 to 1,200 square feet.
Why Build an ADU in Los Angeles?
Los Angeles has some of the most ADU-friendly regulations in California. Recent state laws have made it easier and faster to get permits approved. Here are the top reasons homeowners are building ADUs:
Generate rental income — LA rental rates are among the highest in the nation
House aging parents or adult children while maintaining privacy
Significantly increase your property value
Use as a home office, studio, or guest suite
The ADU Building Process: Step by Step
Consult with a licensed general contractor to assess your property and goals
Design and architectural planning
Submit permit application to the City of Los Angeles
Construction begins after permit approval
Final inspection and certificate of occupancy
How Much Does an ADU Cost in Los Angeles?
Costs vary depending on size, type, and finishes. A garage conversion typically ranges from $80,000–$150,000, while a detached ADU can range from $150,000–$300,000+. The good news: LA ADUs typically generate $1,500–$3,500/month in rental income, making them a strong long-term investment.
Ready to Build Your ADU?
Modern Construction Pro has helped dozens of Los Angeles homeowners build ADUs that maximize their property's potential. As a licensed general contractor (Lic. #1056244) based in Encino, we handle everything from permits to final inspection. Contact us today for a free estimate at modernconstructionpro.com.
Comments