What are Torrance's specific SB-9 regulations?

Richard Thomas
October 22, 2025 at 03:30 AM
SB-9 (Lot Splits) Torrance, CA
Hello everyone,

I'm a homeowner in Torrance, California, and I'm trying to wrap my head around the specifics of SB-9, particularly how it applies to lot splits in our city. I own a property that's 8,500 square feet, and I'm considering splitting the lot to either build an additional dwelling or possibly sell. My budget is fairly tight since I'm also planning on some home renovations, so I want to make sure I'm fully informed before making any decisions.

I've done some reading and understand the general idea of SB-9 allowing for urban lot splits, but I'm struggling with the specifics for Torrance. For instance, are there any unique local ordinances or additional approvals required beyond the state regulations? Also, I've heard mixed information about whether the lots need to be of a certain minimum size post-split and if there are any restrictions on the types of structures that can be built.

Additionally, how does Torrance handle utility connections and access, especially if I plan to maintain the lot as a rental property? Finally, I'm curious about any potential impact on property taxes or homeowner insurance after a lot split.

I would appreciate any insights or experiences from others who've navigated this process, especially within Torrance. Thanks in advance for your help!

1 Answer

David Chen
October 20, 2025 at 01:26 PM
Hello,

Navigating SB-9 regulations can be quite daunting, especially with the added layer of local ordinances. Let’s break down the specifics for Torrance as it relates to your situation.

### Understanding SB-9 and Its Application in Torrance

**SB-9 Overview**: This California Senate Bill enables homeowners to split a single-family lot into two separate parcels, potentially allowing for two residential units on each parcel. This could mean up to four units on what was originally a single-family lot.

**Local Regulations**: While SB-9 sets the state framework, cities like Torrance can impose additional requirements. Torrance has been proactive in establishing guidelines to ensure local control over development patterns.

### Specific Considerations for Torrance

1. **Lot Size and Split Requirements**:
- **Minimum Lot Size Post-Split**: In Torrance, each resulting lot must be at least 1,200 square feet. Given your property is 8,500 square feet, you can split it under SB-9, assuming all other conditions are met.
- **Proportional Split**: The split must be roughly equal, with one lot not being less than 40% the size of the other.

2. **Additional Approvals**:
- **City Review**: Torrance requires a lot split application, which involves a review by the Planning Department. They will assess compliance with local zoning laws, and the split must not alter the character of the neighborhood.
- **Environmental Review**: While SB-9 limits CEQA (California Environmental Quality Act) reviews, some environmental considerations may still apply, especially if the lot is near sensitive areas.

3. **Building Restrictions**:
- **Type of Structures**: Torrance may have specific design guidelines, so it’s crucial to consult with a local architect familiar with these regulations.
- **Owner Occupancy**: SB-9 requires that property owners intend to live in one of the units on one of the lots for at least three years post-split.

4. **Utility Connections**:
- **Separate Connections**: You will likely need separate utility connections for each lot. This can add significant costs, around $10,000 to $30,000 depending on the complexity and extent of existing infrastructure.
- **Access and Easements**: Ensure that each lot has direct access to a public street. Easements might be required if the split affects access.

### Financial Implications

- **Property Taxes**: Splitting the lot may lead to reassessment and potentially higher property taxes. Consult with a property tax advisor to understand the implications for your specific situation.
- **Homeowner Insurance**: You will need to inform your insurer of the lot split and any new construction, which may affect your premiums.

### Timeline and Costs

**Timeline**: The process from application to final approval can take anywhere from 4 to 8 months, depending on the complexity and any additional requirements imposed by the city.

**Cost Estimates**:
- **Surveying and Application Fees**: Expect to spend $5,000 to $10,000 on surveying, application fees, and initial consultations.
- **Construction and Development**: Costs vary widely but budget for at least $150 to $300 per square foot for new construction.

### Steps to Take

1. **Consult with a Local Architect/Planner**: They will help navigate local regulations and design considerations.
2. **Engage a Surveyor**: A professional survey is essential for accurate lot division.
3. **Meet with Torrance Planning Department**: Schedule a pre-application meeting to discuss your plans and understand any specific requirements or concerns.
4. **Prepare Your Application**: Gather all necessary documents, including site plans, proposed lot lines, and any environmental impact considerations.

### Additional Tips

- **Stay Updated**: Regulations can change, so regularly check for updates from the Torrance Planning Department.
- **Consider Neighbors**: Engaging with neighbors early can mitigate potential objections and smooth the approval process.
- **Professional Assistance**: Consider hiring a project manager or consultant experienced in Torrance to oversee the process.

### Resources

- **Torrance Planning Department**: Visit their [website](https://www.torranceca.gov/) for forms and guidelines.
- **California Legislative Information**: Review the full text of [SB-9](https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB9) for detailed state regulations.

Navigating the intricacies of SB-9 in Torrance requires careful planning and a clear understanding of both state and local regulations. With the right approach and professional guidance, you can successfully achieve your development goals. Best of luck with your project!

Warm regards,

[Your Name]
ADU Consultant and SB-9 Specialist
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Types of ADUs in Torrance, 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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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 Torrance, 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
  • Tax Benefits: Depreciation allowances
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Cascade ADU Floor Plan - 2 Bedroom, 2 Bathroom
2 Bed 2 Bath 1,200 sq ft
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Types of ADUs in Torrance, CA

Understanding the different types of Accessory Dwelling Units available in Torrance, 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
  • Easy maintenance access
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ADU Cost Guide for Torrance, CA

Understanding ADU costs helps you budget effectively and make informed decisions about your project in Torrance, 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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Our experts will provide a detailed cost breakdown for your specific Torrance property.

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Complete Guide to SB-9 (Lot Splits) ADUs in Torrance, CA

Understanding SB-9 (Lot Splits) for ADU Projects

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

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SB-9 (Lot Splits) Requirements in Torrance, CA

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

Torrance has 26 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 Torrance 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 Torrance, 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) Torrance ADU Planning Permits
Torrance, CA

This question is specific to Torrance, CA

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