Construction of ADU in California: A Comprehensive Guide for Homeowners and Investors
- KIRMINA
- Mar 15
- 5 min read
The demand for housing in California, particularly in metropolitan areas like Los Angeles, has surged in recent years. One effective solution that has gained popularity among homeowners and real estate investors is the construction of Accessory Dwelling Units (ADUs). These versatile spaces not only provide additional accommodation but also offer an opportunity for homeowners to increase property value. In this blog post, we'll delve into the benefits of ADUs, the legal requirements for construction, and the construction process itself in California, with a special focus on Los Angeles. Additionally, we'll highlight how Kirmina Construction can assist you in this exciting venture.
Understanding the Benefits of ADUs
ADUs, often referred to as "granny flats," "in-law suites," or "secondary units," come with a plethora of advantages:
Increased Property Value: Adding an ADU can substantially increase your property's market value. According to a report by the California Department of Housing and Community Development, properties with ADUs tend to sell at a higher price point than similar homes without them.
Rental Income Potential: Homeowners can convert their newly constructed ADUs into rental units, providing a steady stream of income. This could be particularly appealing in Los Angeles, where the rental market remains robust.
Flexible Living Arrangements: ADUs offer a perfect solution for multi-generational living, allowing family members to reside nearby while maintaining their independence. This is increasingly vital in urban areas where space is at a premium.
Reduced Housing Shortage: By constructing ADUs, homeowners contribute to alleviating the housing crisis in California. Increased housing stock helps meet the high demand in urban areas.
Sustainable Living: ADUs can be designed with eco-friendly materials and energy-efficient technology, promoting sustainable living practices.

Legal Requirements for ADU Construction in Los Angeles
Before diving into the construction process, it is vital to understand the legal aspects of building an ADU in Los Angeles. In 2016, California introduced laws to streamline the ADU approval process, making it easier for homeowners. Here are key legal requirements:
Zoning Regulations: The Los Angeles Department of City Planning provides specific guidelines on where ADUs can be built. Typically, ADUs are allowed in residential zones.
Permits: Homeowners are required to obtain the necessary building and zoning permits before construction. This process often involves submitting plans and getting approvals to ensure compliance with local codes.
Size Limitations: The size of ADUs is restricted depending on the size of the primary dwelling. In Los Angeles, an ADU can be up to 1,200 square feet in size.
Setbacks: ADUs must adhere to certain setback requirements, meaning how far the structure must be from property lines. Generally, the rear setback is 4 feet, allowing for more usable space.
Impact Fees: Some municipalities may charge impact fees for building an ADU for the purpose of funding city infrastructure. However, in many cases, fees are waived for ADUs under a certain size.
For the most current guidelines, homeowners should consult the official website of the Los Angeles Department of City Planning.

The Step-by-Step Construction Process
Constructing an ADU is a multifaceted process that can vary in complexity. Below is a simplified breakdown of the steps involved:
1. Planning and Design
Start by determining the purpose of your ADU and how it will fit into your property. Consult with a professional designer or architect specializing in ADUs to create a plan that meets both your vision and the legal requirements.
2. Secure Financing
Explore your financing options early, including personal savings, loans, or potential rental income from the ADU. Also, check out local programs that offer financial assistance for ADU construction to lessen your financial burden.
3. Obtain Necessary Permits
Once you have a design plan in place, begin the permits application process. This can be time-consuming, so start early. Ensure your plans comply with local zoning laws and building codes.
4. Begin Construction
With permits in hand, your contractor will initiate the construction process. Kirmina Construction specializes in ADUs and can help you through this phase effortlessly, from groundwork to finishing touches.
5. Final Inspection and Renting
After construction is complete, a final inspection will be conducted to ensure compliance with building codes. Once approved, you can consider renting out the unit or utilizing it for family accommodations.

Cost Considerations for ADU Construction
The cost of building an ADU can vary widely based on factors like size, materials, and labor. On average, the cost for constructing an ADU in California ranges from $100,000 to $300,000. Here are some factors influencing the budget:
Size and Design: Larger units with more complex designs will typically cost more. Consider your budget when deciding on size and amenities.
Materials: The choice of building materials significantly impacts overall costs. Opting for high-quality materials may result in a higher upfront cost but can increase durability and resale value.
Labor Costs: Labor prices can fluctuate based on demand and the specialist's experience. Ensure you get quotes from multiple contractors, including Kirmina Construction, to understand your options.
Permits and Fees: Remember to factor in costs for permits, utility connections, and any applicable impact fees.
Getting Expert Help with Kirmina Construction
Navigating the complexities of ADU construction can be overwhelming. This is why partnering with professionals like us Kirmina Construction can make all the difference. With years of experience in building ADUs, Kirmina Construction offers expert services that ensure your project is completed seamlessly, on time, and within budget.
Their team will provide:
Comprehensive design and planning assistance
Help with permit acquisition
Quality craftsmanship throughout the construction process
Advice on maximizing rental income potential
In short, partnering with Kirmina Construction helps simplify the journey to building your ADU while ensuring compliance with all local regulations.
The Future of ADUs in Los Angeles
The trend of building ADUs shows no signs of slowing. As housing costs soar and the population increases in cities like Los Angeles, ADUs provide a sustainable, practical, and profitable solution for homeowners and investors alike.
Whether looking to enhance your property value, generate rental income, or accommodate family members, constructing an ADU could be your best investment yet.
As homeowners increasingly recognize the benefits of ADUs, and with regulations continuously evolving to support them, now is the perfect time to explore this rewarding opportunity.
For inquiries about ADU construction and to learn more about how Kirmina Construction can assist you, click here to get started.
By following the insights shared in this blog post, you are now better equipped to navigate the exciting world of ADUs in California. Whether you are a homeowner looking to add value to your property or an investor seeking to capitalize on rental opportunities, the construction of an ADU could be the key to achieving your real estate goals.
Comments