Can I do a lot split under SB-9 in Santa Ana?

Barbara Garcia
October 22, 2025 at 03:26 AM
SB-9 (Lot Splits) Santa Ana, CA
Hello everyone,

I’m a homeowner in Santa Ana, and I’ve been exploring the possibility of doing a lot split under the new SB-9 legislation. My property is about 7,000 square feet, and I’ve read that this might be feasible, but I’m unsure of the specifics. I'm really keen on understanding what steps I need to take and any potential hurdles I might face.

I’ve done some research and learned that SB-9 allows for a minimum of two units on eligible lots, but I’m not entirely clear on how this applies within Santa Ana’s local regulations. Can anyone clarify how the city interprets or enforces these state guidelines? Also, are there any additional requirements or restrictions specific to Santa Ana that I should be aware of?

Budget-wise, I’m planning for a modest investment and aiming to keep the costs reasonable, so understanding potential fees and taxes involved is crucial. Does anyone know what kind of financial implications I might encounter during this process?

Lastly, I’m concerned about how such a project might impact the neighborhood feel or raise any community opposition. Have any of you gone through a lot split here, and if so, how was your experience with the neighbors and city planning?

I would appreciate any insights or advice from those who have experience with SB-9 lot splits in Santa Ana. Thanks in advance!

1 Answer

Sarah Mitchell
October 20, 2025 at 07:26 PM
Hello and thanks for reaching out with your questions about SB-9 lot splits in Santa Ana! It’s great to hear you’re exploring this option, as SB-9 provides a unique opportunity for homeowners like yourself to maximize the use of their properties. Let’s break down your questions and concerns.

### Understanding SB-9 in Santa Ana

**SB-9 Overview:**
SB-9, effective from January 1, 2022, allows for the splitting of single-family residential lots, with the potential to develop up to two units on each resulting lot. This law was designed to increase housing density and affordability across California. However, local jurisdictions like Santa Ana can impose additional regulations, so it's crucial to understand both statewide and local requirements.

### Eligibility and Requirements

1. **Lot Size and Split:**
- Your 7,000-square-foot lot is eligible under SB-9, as the minimum lot size for a split is generally 2,400 square feet. Each new lot must be no smaller than 40% of the original lot size, so you should be able to split your lot relatively evenly.

2. **Santa Ana Specifics:**
- Santa Ana may have additional zoning codes and ordinances impacting lot splits. For instance, certain historic districts or environmentally sensitive areas might have restrictions. Verify with the Santa Ana Planning Division whether your property is in such a zone.

3. **Development Standards:**
- After the split, you can develop up to two units per lot, potentially resulting in four units total, considering both lots. Ensure compliance with setback, height, and parking requirements. Santa Ana typically requires one off-street parking space per unit unless near transit.

### Process and Timeline

1. **Initial Consultation:**
- Start by consulting with the Santa Ana Planning Division. They can provide specific guidance tailored to your property and help you navigate any local nuances.

2. **Survey and Application:**
- Hire a licensed land surveyor to create a parcel map of your property. This is a critical step for your lot split application.
- Submit your application to the city, including your survey, a lot split proposal, and any required fees.

3. **Review and Approval:**
- The review process might take several months, typically 3-6 months, depending on city workload and any required adjustments.

4. **Construction Phase:**
- Once approved, you can proceed with construction. Consider hiring an architect or builder familiar with SB-9 developments to ensure compliance and efficient execution.

### Financial Considerations

1. **Costs:**
- Initial costs for surveying and application fees can range from $5,000 to $10,000. Construction costs will vary based on design and materials but generally start at $150-$300 per square foot for modest builds.
- There may be additional costs for utility hookups, impact fees, and potential infrastructure improvements.

2. **Taxes and Fees:**
- Property taxes may increase post-split due to reassessment. Additionally, be prepared for development impact fees, which Santa Ana charges to mitigate the impact of new developments on community infrastructure.

### Community and Neighborhood Impact

1. **Engaging with Neighbors:**
- Proactively communicate with your neighbors about your plans. Transparency can help mitigate opposition and foster support.

2. **Local Sentiment:**
- Santa Ana, like many communities, values neighborhood character. Ensure your development is aesthetically compatible with the area to minimize resistance.

### Common Mistakes and Tips

- **Avoid rushing without full understanding:** Ensure you understand both state and local regulations thoroughly to avoid costly mistakes.
- **Professional Guidance:** Engage professionals who have experience with similar projects in Santa Ana to guide you through the process.
- **Community Engagement:** Attend local council meetings or neighborhood association gatherings to stay informed about community sentiment and gather support.

### Next Steps

1. **Research and Resources:**
- Santa Ana’s Planning Division website is a valuable resource. They often have guidelines and FAQs specific to SB-9.
- Consider joining local forums or groups where homeowners discuss their experiences with SB-9.

2. **Professional Consultation:**
- Engage a local real estate attorney or consultant specializing in land use to ensure you meet all legal requirements.

By taking these steps, you'll be well on your way to successfully navigating the SB-9 lot split process in Santa Ana. If you have further questions or need a referral to local experts, feel free to reach out. Good luck with your project!
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Types of ADUs in Santa Ana, CA

Understanding the different types of Accessory Dwelling Units can help you choose the best option for your property and needs.

Detached ADU

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An addition to your existing home with a separate entrance. Cost-effective option with shared utilities.

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Garage Conversion

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JADU

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Basement ADU

Convert basement or lower level into living space. Great option for properties with existing below-grade areas.

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ADU Cost Guide for Santa Ana, CA

Understanding ADU costs helps you budget effectively and make informed decisions about your project. Costs vary based on size, complexity, and local factors.

ADU Type Size Range Cost Range Timeline Best For
Garage Conversion 400-800 sq ft $80K - $150K 3-6 months Budget-conscious homeowners
JADU Up to 500 sq ft $50K - $100K 2-4 months Family use, minimal disruption
Attached ADU 600-1,000 sq ft $120K - $200K 4-8 months Shared utilities, family proximity
Detached ADU 600-1,200 sq ft $150K - $300K 6-12 months Maximum rental income
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Cost Factors to Consider
  • Site Preparation: $5K - $25K
  • Permits & Fees: $3K - $15K
  • Utility Connections: $5K - $20K
  • Finish Level: $10K - $50K variance
  • Landscaping: $2K - $10K
Potential ROI
  • Rental Income: $1,500 - $4,000/month
  • Property Value Increase: 20-30%
  • Payback Period: 8-15 years
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Financial Benefits
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Cascade ADU Floor Plan - 2 Bedroom, 2 Bathroom
2 Bed 2 Bath 1,200 sq ft
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Summit ADU Floor Plan - 2 Bedroom, 2 Bathroom
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Types of ADUs in Santa Ana, CA

Understanding the different types of Accessory Dwelling Units available in Santa Ana, CA can help you choose the best option for your property and budget.

Detached ADU

A standalone structure separate from the main house. Offers maximum privacy and flexibility.

  • Maximum privacy
  • Flexible design options
  • Higher rental income potential
Garage Conversion

Converting an existing garage into a living space. Most cost-effective option.

  • Lower construction costs
  • Faster permitting process
  • Existing utilities nearby
Attached ADU

An addition to the existing house with separate entrance. Balances cost and privacy.

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  • Moderate construction costs
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ADU Cost Guide for Santa Ana, CA

Understanding ADU costs helps you budget effectively and make informed decisions about your project in Santa Ana, CA.

ADU Type Size Range Cost Range Cost per Sq Ft Timeline
Garage Conversion 400-800 sq ft $80,000 - $150,000 $200 - $250 3-6 months
Attached ADU 500-1,200 sq ft $150,000 - $300,000 $250 - $350 6-9 months
Detached ADU 600-1,200 sq ft $200,000 - $400,000 $300 - $450 8-12 months
Prefab ADU 400-1,000 sq ft $120,000 - $250,000 $250 - $350 4-8 months
JADU (Junior ADU) Up to 500 sq ft $50,000 - $120,000 $150 - $300 2-4 months
Cost Factors to Consider:
  • Site preparation and utilities
  • Permits and plan review fees
  • Foundation and structural work
  • Finishes and appliances
  • Landscaping and driveway
Ways to Save Money:
  • Choose garage conversion over new build
  • Use prefab or modular construction
  • Keep design simple and efficient
  • Bundle with main house renovations
  • Work with experienced ADU builders
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Complete Guide to SB-9 (Lot Splits) ADUs in Santa Ana, CA

Understanding SB-9 (Lot Splits) for ADU Projects

ADU development in Santa Ana, CA involves numerous considerations specific to sb-9 (lot splits). Understanding local requirements, best practices, and potential challenges helps ensure project success.

Each ADU project is unique, with specific circumstances that influence design, permitting, and construction decisions. Professional guidance helps navigate these complexities and achieve optimal outcomes.

The GatherADU team has extensive experience with sb-9 (lot splits) aspects of ADU development and can provide expert assistance throughout your project.

SB-9 (Lot Splits) Requirements in Santa Ana, CA

Local regulations in Santa Ana, CA have specific requirements that affect ADU development. Understanding these local nuances is crucial for project success and compliance.

Santa Ana has 28 ADU-related questions in our database, indicating active development interest in your area. This local activity suggests growing expertise among contractors, architects, and city officials familiar with ADU projects.

Common considerations for Santa Ana include local architectural standards, historical district requirements if applicable, utility connection procedures, and neighborhood-specific zoning overlays that may affect your project.

Expert Insights on SB-9 (Lot Splits)

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ADU Development Checklist for Santa Ana, CA

Use this comprehensive checklist to ensure you don't miss important steps in your ADU development process.

Planning Phase
  • Define project goals and budget
  • Research local zoning requirements
  • Evaluate site conditions and constraints
  • Consult with ADU experts
  • Develop preliminary design concepts
Pre-Construction
  • Finalize architectural plans
  • Submit permit applications
  • Select qualified contractors
  • Secure financing if needed
  • Schedule utility connections
Construction Phase
  • Site preparation and excavation
  • Foundation and framing work
  • Rough-in electrical and plumbing
  • Insulation and drywall installation
  • Interior and exterior finishes
Completion
  • Final inspections and approvals
  • Certificate of occupancy
  • Utility meter installation
  • Final walkthrough and cleanup
  • Property insurance updates
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SB-9 (Lot Splits) Santa Ana ADU Planning Permits
Santa Ana, CA

This question is specific to Santa Ana, CA

Local regulations may vary by jurisdiction. Always verify with your local planning department.