What are the requirements for SB-9 lot splits in Los Angeles?

Barbara Johnson

October 20, 2025 at 03:23 AM

SB-9 (Lot Splits) Los Angeles, CA

Hi everyone,

I'm considering taking advantage of SB-9 to split my lot in Los Angeles, but I'm a bit overwhelmed by all the requirements and nuances. My property is about 7,500 square feet, and I'm hoping to create a second lot for my daughter. I’ve read some articles and city guidelines, but I still have a few questions I can't fully wrap my head around.

First, I've heard the lot can't be split into any parcel smaller than 1,200 square feet. With my lot size, how should I go about determining the best way to divide it? Also, I've read something about maintaining a 60/40 split ratio—is that correct?

Second, I’m on a pretty tight budget, so I’m trying to get a sense of potential costs. Are there any hidden fees or permits specific to Los Angeles that I should be aware of?

Additionally, I've heard that owner-occupancy is required for at least one of the lots for a certain number of years. Is this true, and how strictly is it enforced?

Lastly, are there any zoning restrictions or neighborhood covenants in Los Angeles that could prevent me from going through with this split?

I’d appreciate any insights or experiences you can share. I really want to make sure I understand everything before diving in.

Thanks in advance!

1 Answer

David Chen

October 19, 2025 at 10:20 PM

Hello,

Navigating the requirements for an SB-9 lot split in Los Angeles can indeed feel overwhelming, but with a clear understanding of the regulations and some strategic planning, you can successfully achieve your goal. Let's break down your questions and provide some actionable insights.

### Lot Splitting Requirements

1. **Minimum Parcel Size**: Under SB-9, each new parcel must be at least 1,200 square feet. With your 7,500 square foot lot, you have a good amount of flexibility. While the "60/40 split" is not a formal requirement, it’s a practical guideline to ensure both parcels are usable and compliant with zoning regulations. For example, a 4,500/3,000 split might suit your needs while maintaining compliance.

2. **Determining the Best Split**: Consider the existing structures, their locations, and any easements or setback requirements. You may want to consult with a surveyor or an architect who can help draft a subdivision map that maximizes the use of both lots.

### Costs and Budgeting

1. **Potential Costs**: Expect costs for surveying, lot line adjustments, and potential infrastructure upgrades (like separate utility hookups). Surveying fees can range from $5,000 to $10,000, depending on complexity. Additionally, prepare for permit fees which can vary but often start around $1,500. Legal fees may also arise if you need assistance with navigating zoning laws or local covenants.

2. **Hidden Fees**: Consider costs for environmental reviews or soil tests, particularly if your lot is in a designated hillside or fire zone area. These can add several thousand dollars to your budget.

### Owner-Occupancy Requirement

SB-9 mandates an owner-occupancy requirement for one of the lots for at least three years following the lot split. This is strictly enforced to prevent speculative development and ensure community stability. Be prepared to sign an affidavit or covenant to this effect when applying for your lot split.

### Zoning and Covenants

1. **Zoning Restrictions**: Los Angeles zoning laws can be complex. Ensure your property is not in an exclusion zone such as historic districts or environmentally sensitive areas, as these can prevent a lot split. Check the Los Angeles City Planning Department's Zoning Information Mapping Access System (ZIMAS) for specific zoning information.

2. **Neighborhood Covenants**: Some neighborhoods have CC&Rs (Covenants, Conditions, and Restrictions) that might limit lot splits. Review any neighborhood agreements or consult with a local real estate attorney to clarify these restrictions.

### Next Steps and Resources

1. **Consult Professionals**: Engage with a local architect or a civil engineer early in the process to assess feasibility and design a compliant subdivision plan. A real estate lawyer can also help navigate legal nuances.

2. **City Resources**: Utilize resources from the Los Angeles Department of Building and Safety (LADBS) and attend any community meetings or workshops they offer on SB-9.

3. **Timeline**: Be prepared for the process to take several months, from initial planning to final approval. On average, the timeline can range from 6 to 12 months.

4. **Stay Informed**: Regularly check for updates on local amendments to the SB-9 law that could affect your plans.

### Common Mistakes and Tips

- **Overlooking Utility Requirements**: Ensure that each parcel can independently connect to utilities. This can sometimes be an overlooked detail that complicates later stages.

- **Ignoring Setbacks**: Pay close attention to setback requirements, which can significantly influence how you utilize your parcels.

- **Budget Buffer**: Always allocate an additional 10-15% of your budget for unforeseen expenses.

I hope this provides clarity and guidance as you embark on your lot-splitting journey. Remember, while the process may seem daunting, taking it step-by-step and leveraging professional expertise will ease the way.

Best of luck with your project, and feel free to reach out if you have more questions!

Warm regards,

[Your Name]
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