Here’s how to qualify for SB9 lot splits

Understanding the intricacies of Senate Bill 9 (SB9) in California can unlock new opportunities for homeowners looking to maximize their property’s potential. Let’s dive into what the legislation entails, its requirements, and how to qualify for SB9 lot splits.

What is SB9?

One of my friends recently rang me up to discuss his plans to split his single-family lot. While he was aware of how the SB9 legislation is linked to his plans, he wasn’t quite sure how to proceed. By understanding the law and its requirements, you could potentially transform your single-family lot into a multi-unit space, offering new housing options and generating additional income.

However, most people don’t have a law degree, so it helps to consult experts to fully understand the impact of SB9!

SB9, part of California’s effort to address the housing shortage, allows homeowners to split their lots and build additional units. Also known as the California Act, the law aims to streamline the process, making it easier to create more housing in existing neighborhoods.

Lot Split Requirements under SB9

Under SB9, lot splits must meet certain criteria:

  • The property must be in a residential zone.
  • The original lot must be at least 2,400 square feet; each new lot must be at least 1,200 square feet.
  • No tenant evictions within the last 15 years.
  • Owners may split their lot only once.
  • The owner must intend to live in one of the housing units for a minimum of three years after the split.

Advantages and Disadvantages of SB9

The advantages for you, as a homeowner, include:

  • Expand upon the liveable space in your primary residence.
  • Opportunity to earn extra income, either by selling one of the new lots or renting it out long-term.
  • Allows you to share your primary residence with extended family members and friends.

SB9 lot splits in California

However, it’s worth noting that lot splitting will incur costs in the form of development and impact fees. Another drawback to consider is the lengthy duration of the process (it can take up to two years, especially when you factor in permitting). However, you can mitigate such challenges by working with a premier ADU development agency like GoldenADU!

How Do I Qualify for SB9?

To qualify, ensure your property is zoned for residential use and meets the minimum lot size requirements. You must also commit to residing in one of the units for at least three years. Consulting with a local planner or legal advisor can provide clarity and streamline the process.

If you decide to apply for SB9 lot splits, you will need to have the following documents:

  1. Completed Application Form – this will be specific to your local jurisdiction, detailing the request for a lot split
  2. Proof of Ownership Рmay include a recent property deed or title report to verify property ownership
  3. Site Plan – detailed drawing of the existing property and the proposed division of the lots
  4. Preliminary Title Report – document showing the current status of the property title and any encumbrances
  5. Residency Declaration – a statement confirming your intent to live in one of the units on the property for the required period
  6. Environmental Impact Assessment (if required) – depends on your local regulations
  7. Financial Statement – statement demonstrating your ability to develop the property post-split, if required by local authorities


Be sure to check with your local planning department for any additional documents required from your side.

SB9 and GoldenADU

SB9 lot splits present a unique opportunity for property owners to contribute to solving California’s housing crisis while benefiting financially. By meeting the specific requirements and understanding the pros and cons, you can make an informed decision about leveraging SB9 for your property.

SB9 lot splits in California

Choosing GoldenADU for navigating your SB9 lot split in California means partnering with seasoned experts who blend extensive experience with bespoke solutions and impeccable craftsmanship.

GoldenADU specializes in a variety of ADUs, from solar-powered units to pool houses. Each is designed to meet your unique needs while ensuring sustainability and compliance with local regulations. Our commitment to delivering exceptional customer service and seamlessly managing your project from start to finish guarantees a smooth and rewarding experience.

Contact us today at 213-693-2405 to get your free ADU consultation!


What is the minimum lot size for an SB9 split?

Each new lot must be at least 1,200 square feet after the split.

Can I split my lot multiple times under SB9?

No, an owner may split a lot only once under SB9.

Do I need to live on the property after the lot split?

Yes, the owner must occupy one of the units for at least three years.

Are all properties eligible for SB9 lot splits?

Only properties in residential zones qualify, and there are other specific criteria to meet.

share this:


Want More?