Unlocking Your Property’s Potential with SB9 in California
California’s new SB9 law is a game-changer for property owners. It allows you to split your lot and build up to four residences, including two Accessory Dwelling Units (ADUs) and two main homes. This blog will help you understand the regulations, benefits, and how to get started.
What is SB9?
SB9, also known as the California Housing Opportunity and More Efficiency (HOME) Act, is a new law that came into effect to address the state’s housing crisis. It allows homeowners to split their single-family residential lots into two separate lots and build additional residences.
Key Points of SB9
- Lot Splitting: Homeowners can divide a single lot into two.
- Multiple Residences: Up to four units can be built on the new lots—two main homes and two ADUs.
- Setbacks: Proper setbacks must be maintained to ensure safety and accessibility.
- Owner Occupancy: At least one of the units must be owner-occupied for a minimum of three years.
- Local Regulations: Compliance with local building and zoning codes is necessary.
Benefits of SB9
Increased Property Value
Splitting a lot and building additional units can significantly increase the value of your property. This not only benefits you as the owner but also helps provide more housing options in your community.
Additional Income
By adding ADUs or additional residences, you can create rental opportunities, generating extra income. This is especially beneficial in high-demand areas where rental properties are scarce.
Addressing Housing Shortage
SB9 helps alleviate California’s housing crisis by enabling the creation of more living spaces without the need for new land development.
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How to Get Started
Step 1: Check Local Regulations
Before you start, review your local building and zoning codes to ensure compliance. Each city may have specific requirements that you need to follow.
Step 2: Consult a Professional
Hire a professional architect or planner to help you design the new lot layout and ensure that all legal requirements are met. They can assist with permits and navigating local regulations.
Step 3: Apply for Permits
Submit your plans and applications to the local planning department. Be prepared for inspections and possible adjustments to your plans to meet all standards.
Step 4: Build Your Units
Once you have the necessary approvals, you can begin construction. Ensure that you follow all safety and building codes during the process.
For more information or to discuss your project, Contact Us.
What is SB9 in California?
- “SB9, or the California Housing Opportunity and More Efficiency (HOME) Act, allows homeowners to split their lot and build multiple residences, including ADUs.”
How do I split my lot under SB9?
- “To split your lot under SB9, you need to check local regulations, consult a professional, apply for permits, and then proceed with construction.”
What are the benefits of SB9?
- “The benefits of SB9 include increased property value, additional rental income, and helping to address the housing shortage in California.”
What are the requirements for SB9 lot splits?
- “SB9 requires that you maintain proper setbacks, comply with local building codes, and ensure at least one unit is owner-occupied for three years.”
Can I build two ADUs on my lot in California?
- “Yes, under SB9, you can build two ADUs along with two main residences on your lot in California, provided you meet all regulatory requirements.”
How do I start an SB9 project?
- “To start an SB9 project, first check local zoning laws, hire an architect, apply for the necessary permits, and then begin construction.”
What are the local regulations for SB9 in my city?
- “Local regulations for SB9 vary by city, so it’s important to consult your local planning department or a professional to ensure compliance.”
How can SB9 increase my property value?
- “SB9 can increase your property value by allowing you to build additional residences, which can be sold or rented out for extra income.”
What is the owner occupancy requirement for SB9?
“SB9 requires that at least one of the units must be owner-occupied for a minimum of three years after the lot is split.”
SB9 California Resources
Senate Bill 9
Napa county ADU’s
Napa Register News on new Law SB 9



