If you’ve considered adding more living space to your property, an ADU in Los Angeles is the perfect solution. Whether you want extra room for family, a rental income opportunity, or a private office, an accessory dwelling unit offers incredible flexibility. With rising demand for home additions in Los Angeles, more homeowners are investing in backyard ADU construction to maximize their property’s potential.
At 1 Degree Construction, we specialize in designing and building custom ADU builders tailored to your needs. From handling ADU building permits to ensuring compliance with ADU zoning laws, we make the process seamless.
This guide explores the importance of ADUs. You will learn about ADUs, different versions, zoning laws, and much more.
What is an ADU, and Why Build One?
An accessory dwelling unit (ADU) is a secondary living space on the same property as a primary residence. These units can be detached, attached, or even garage conversion ADUs. With increasing housing shortages and demand for affordable housing options, ADUs have become an excellent investment for homeowners.
Some of the key benefits of building an ADU in Los Angeles include:
- Rental income opportunities with ADUs: Earn passive income by renting out your ADU.
- Multi-generational living solutions: Provide a private space for aging parents or adult children.
- Small space living solutions: Optimize your property’s footprint with a compact and efficient living area.
- Los Angeles property value increase: Adding an ADU can significantly boost your home’s market value.
Types of ADUs: Finding the Right Fit for Your Home
When planning an ADU in Los Angeles, choosing the right type depends on your needs, property size, and budget. Here are the main types:
Detached ADU

A detached ADU is a standalone structure separate from the main house. These offer the most privacy and flexibility, making them ideal for rentals or guest houses.
Attached ADU
An attached ADU shares at least one wall with the main home but has its own entrance. It’s a great way to expand your living space while maintaining some separation.
Garage Conversion ADU
One of the most cost-effective ways to add an ADU is with a garage conversion ADU. Since the structure already exists, it requires fewer materials and labor than a new build.
Prefabricated ADU Options
For a faster and often more affordable solution, prefabricated ADU options allow homeowners to install a pre-built unit on their property with minimal construction time.
Understanding ADU Zoning Laws and Building Permits
Before you break ground, it’s essential to understand ADU zoning laws and secure the proper ADU building permits. Regulations vary by location, but in Los Angeles, homeowners can generally build an ADU on properties zoned for residential use. Key considerations include:
- Size restrictions: ADU sizes typically range from 400 to 1,200 square feet, depending on lot size.
- Setback requirements: The unit must be a certain distance from property lines and existing structures.
- Parking regulations: Some ADUs require additional parking, while others are exempt depending on proximity to public transit.
Most contractors will handle all permitting and regulatory requirements, but you need to understand the laws and regulations in case any issues arise after the contractors have finished their job.
ADU Cost in Los Angeles: What to Expect

The ADU cost in Los Angeles varies based on size, materials, and construction complexity. On average:
- Garage conversion ADUs start at around $80,000 to $150,000.
- Detached ADUs can range from $110,000 to $285,000.
- Attached ADUs cost between $100,000 to $216,000.
Financing options include home equity loans, renovation loans, and state incentive programs for ADUs.
Energy-Efficient ADU Design: Smart and Sustainable Solutions
Building an energy-efficient ADU design not only reduces utility costs but also contributes to environmental sustainability. Some key features include:
- Solar panels: Reduce reliance on grid electricity.
- Smart thermostats and lighting: Improve energy efficiency and convenience.
- Insulated windows and doors: Enhance temperature control and reduce energy loss.
Choosing the Right General Contractor for Your ADU
Selecting the right general contractor is critical for a smooth and successful ADU project. A trusted contractor will:
- Handle all permitting and zoning compliance.
- Work with licensed contractors to ensure quality workmanship.
- Offer custom home builders services for a fully tailored ADU experience.
Need extra space? Create the perfect ADU for your home!
If you’re considering adding an ADU to your property, we at 1 Degree Construction are here to help. We have the expertise to ensure your ADU complies with Los Angeles zoning laws and will go above and beyond to ensure you have the ideal unit.
Please get in touch with us and let us begin work on your new unit, which future inhabitants will enjoy for decades to come.
Frequently Asked Questions (FAQ)
How long does it take to build an ADU in Los Angeles?
The timeline depends on the complexity of the project. Garage conversion ADUs take about 3-6 months, while detached ADUs may take 9-12 months from permitting to completion.
Can you rent out a ADU in Los Angeles?
Yes! Rental income opportunities with ADUs are one of their biggest benefits. Los Angeles allows for long-term rentals of ADUs, making them an excellent investment.
Do you need a separate utility connection for an ADU?
It depends. Some ADUs share utilities with the main home, while others require separate connections for water, electricity, and gas.
If you are interested in learning more about ways to remodel your home, please check out our next article, Basement Remodel Ideas: Transform Your Space with Creativity. This guide will provide you with all the necessary information about basement remodeling and hopefully inspire you if you have recently considered this idea.