Can I build two units under SB-9 in Sacramento?

Linda Brown
October 22, 2025 at 03:27 AM
SB-9 (Lot Splits) Sacramento, CA
Hello everyone,

I'm considering taking advantage of California's SB-9 legislation to potentially build two additional units on my property in Sacramento, but I need some expert advice to navigate this process properly. My lot is just over 6,500 square feet, and I've read that SB-9 could allow me to split my lot and build up to two units. However, I'm feeling a bit overwhelmed with the details and how they specifically apply to Sacramento.

Here are a few specifics about my situation: I have a budget of about $300,000 for this project, and I'm particularly concerned about how zoning regulations or local ordinances might affect what I can do. I've already checked that my zoning appears to be R-1, and I understand this is a crucial factor, but I need more clarity.

Firstly, does my lot size actually qualify for a split under SB-9, considering any local Sacramento restrictions? Secondly, if I can indeed split the lot, are there specific design and building requirements I should be aware of that might influence my budget? Lastly, I've read about possible owner-occupancy requirements—does that mean I have to live in one of the units for a certain period?

I’d appreciate any insights from those who've been through this process or understand the local regulations better. Thank you!

1 Answer

Michael Park
October 20, 2025 at 04:53 AM
Hello there,

Navigating California's SB-9 legislation to build additional units on your property in Sacramento is indeed an exciting opportunity, but it's essential to understand the intricacies involved. I'll break down your concerns and provide guidance tailored to your specific situation.

### 1. Lot Split Eligibility under SB-9

**Lot Size and Split Requirements**: SB-9 allows for lot splits provided each resulting lot is at least 40% of the original lot size. Since your property is over 6,500 square feet, each new lot should be at least 2,600 square feet post-split. Sacramento's local ordinances align with these state-level regulations; however, always verify with the Sacramento Planning Department to ensure there are no additional local restrictions that may affect your property specifically.

### 2. Zoning and Building Requirements

**Zoning**: Your R-1 zoning primarily supports single-family residences, but under SB-9, you can construct up to two units per lot post-split, essentially enabling up to four units on the original parcel. Sacramento has embraced SB-9, but it’s crucial to check for any overlay zones or historic designations that might impose additional constraints.

**Design and Building Requirements**: Sacramento's design standards for SB-9 projects include:

- **Setbacks**: Typically, a minimum setback of 4 feet from side and rear lot lines is required.
- **Height Restrictions**: Generally, a maximum height of 16 feet for ADUs is common, but check if local ordinances allow for more.
- **Parking**: If your property is not within a half-mile of public transit, you may need to provide one parking space per unit.

**Budget Considerations**: With a budget of $300,000, you’ll need careful planning. Construction costs in Sacramento average around $200-$300 per square foot for basic finishes. This means your budget might cover a modest 1,000 to 1,500 square-foot unit. Consider costs for site preparation, utility connections, and permit fees.

### 3. Owner-Occupancy Requirements

SB-9 has a stipulation that requires the property owner to sign an affidavit stating they will live in one of the units for at least three years post-lot split. Sacramento adheres to this requirement, so plan accordingly if you're considering renting out both new units.

### Step-by-Step Guidance

1. **Consultation and Verification**: Start by scheduling a meeting with a local architect or planner familiar with SB-9 projects in Sacramento. They can provide a feasibility study specific to your property.

2. **Survey and Lot Split Application**: Engage a licensed surveyor to map your existing lot and prepare the necessary documentation for your lot split application. This step is crucial and ensures compliance with local regulations.

3. **Design and Permitting**: Work with a designer or architect to develop plans that meet both your preferences and regulatory requirements. Submit these plans to the Sacramento Building Department for approval.

4. **Construction**: Once permits are secured, hire a reputable contractor experienced with local codes and SB-9 projects. Seek multiple bids to ensure competitive pricing and quality.

5. **Compliance and Final Steps**: Ensure all construction complies with local codes. Schedule inspections as required and focus on adhering to your timeline and budget.

### Additional Tips and Warnings

- **Utilities**: Consider how utilities will be managed. Separate meters might be a requirement, impacting your budget.

- **Environmental Considerations**: Be aware of any environmental restrictions, such as flood zones or protected trees, which could influence your project scope.

- **Community Engagement**: Engage with your neighbors early in the process to mitigate any opposition, especially concerning construction noise or visual impacts.

### Next Steps and Resources

- **Sacramento Planning Department**: Visit their office or website to access specific forms and guidelines on SB-9 projects.

- **Local Real Estate and ADU Professionals**: Attend workshops or seminars for property owners on ADU and SB-9 developments.

- **Legal Advice**: Consult with a real estate attorney to ensure all contracts and legal documents, particularly the owner-occupancy affidavit, are in order.

Embarking on an SB-9 project in Sacramento can be a rewarding venture, enhancing both your property value and community housing options. With careful planning and professional guidance, you can navigate the process successfully. Best of luck with your development!

Feel free to reach out with further questions as you move forward.

Warm regards,

[Your Name]
ADU Consultant and SB-9 Specialist
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Types of ADUs in Sacramento, CA

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

Detached ADU

A separate, standalone structure built on your property. Offers maximum privacy and flexibility for tenants.

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Attached ADU

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

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Garage Conversion

Convert existing garage space into a livable unit. Most cost-effective ADU option with fastest approval.

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JADU

Junior ADU created within the existing home. Maximum 500 sq ft with efficiency kitchen and shared utilities.

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Upper Floor ADU

Add a second story or convert existing upper floor space. Maximizes property value and rental potential.

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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 Sacramento, 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
Two-Story ADU 800-1,500 sq ft $200K - $400K 8-15 months Maximizing property value
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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Get Your Personalized Cost Estimate

These are general ranges. Your actual costs may vary based on specific site conditions, design choices, and local market factors in Sacramento.

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Why Build an ADU in Sacramento?

Financial Benefits
Rental Income: Generate $18,000-$48,000 annually
Property Value: Increase home value by 20-30%
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Investment: Strong ROI in California markets
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Multigenerational Living: Keep family close while maintaining privacy
Home Office: Create dedicated workspace or studio
Guest Space: Comfortable accommodations for visitors
Sustainability: Increase housing density efficiently

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Explore our most popular ADU designs that work well in Sacramento, CA. These professionally designed floor plans optimize space and functionality while meeting local building requirements.

Cascade ADU Floor Plan - 2 Bedroom, 2 Bathroom
2 Bed 2 Bath 1,200 sq ft
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Types of ADUs in Sacramento, CA

Understanding the different types of Accessory Dwelling Units available in Sacramento, 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.

  • Shared utilities
  • Moderate construction costs
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ADU Cost Guide for Sacramento, CA

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

Understanding SB-9 (Lot Splits) for ADU Projects

ADU development in Sacramento, 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 Sacramento, CA

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

Sacramento has 19 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 Sacramento 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)

The GatherADU team has helped hundreds of homeowners navigate sb-9 (lot splits) challenges successfully. Our experience reveals common patterns, effective strategies, and potential pitfalls to avoid.

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ADU Development Checklist for Sacramento, 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) Sacramento ADU Planning Permits
Sacramento, CA

This question is specific to Sacramento, CA

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