Everything You Need to Know About Building an ADU in Los Angeles

Are you a homeowner in Los Angeles looking to create extra living space, earn rental income, or boost your property value? Accessory Dwelling Units—commonly known as ADUs—might be the perfect solution. Whether it’s a garage conversion, backyard guest house, or a second unit above the garage, ADUs are rapidly growing in popularity throughout California.

In this guide, we’ll walk you through what an ADU is, the benefits, common challenges, and how to get started.

What Is an ADU?

An Accessory Dwelling Unit (ADU) is a secondary residential unit built on the same lot as a primary home. These units can be:

• Detached ADUs (standalone backyard homes)
• Attached ADUs (built onto an existing home)
• Garage conversions (turning an existing garage into a legal living space)
• Junior ADUs (JADUs) (under 500 sq ft, typically converted from existing space)

Why Build an ADU?

ADUs are one of the most cost-effective ways to add livable space in Los Angeles. Here’s why homeowners love them:

✅ Rental Income: Many homeowners rent out ADUs for passive monthly income.

✅ Multi-Generational Living: Keep family close while maintaining privacy.

✅ Property Value Boost: ADUs can significantly raise your home’s market value.

✅ Affordable Housing Solution: Help address the housing crisis in California.

✅ Home Office or Studio: Great for remote workers or creative professionals.

What’s the Process Like?

As a licensed ADU contractor in Los Angeles, we break down the process into 5 manageable phases:

1. Feasibility & Planning – We’ll assess your lot, zoning, and goals.
2. Design & Permits – Custom floor plans and structural drawings are submitted to the city.
3. Financing – We can help connect you to ADU loan and refinancing options.
4. Construction – From excavation to finishes, our team handles it all.
5. Final Inspection & Move-In – We make sure everything is fully compliant and ready.

How Much Does an ADU Cost in Los Angeles?

ADU construction costs in LA typically range from $150,000 to $350,000, depending on size, layout, and location. Garage conversions tend to be on the lower end, while detached ADUs require full foundation, plumbing, and electrical.

We offer transparent pricing, timelines, and permit guidance to help you avoid costly surprises.

Common ADU Questions

Q: Do I need a permit to build an ADU in LA?

Yes. All ADUs require proper permits from LADBS. We handle the permitting process for you.

Q: How long does it take to build an ADU?

Most ADUs take 6 to 9 months from design to completion.

Q: Can I finance my ADU?

Absolutely. We can help connect you with ADU loans, cash-out refi options, or HELOCs designed for this exact purpose.

Get Expert Help from a Licensed ADU Contractor

If you’re thinking about building an ADU in Los Angeles, it’s important to work with a contractor who understands the local zoning codes, permit requirements, and construction challenges.

With over a decade of experience, our team specializes in:

• Garage conversions
• Backyard ADU builds
• Multi-unit property upgrades
• Energy-efficient ADUs
• Permit expediting

We’ve helped hundreds of homeowners transform their backyards into profitable, stylish, and code-compliant living spaces.

Ready to Build Your ADU?

We offer a free consultation to walk your property, discuss your goals, and explain what’s possible. Don’t leave money on the table—ADUs are one of the smartest real estate investments in LA right now.