What are Torrance's specific SB-9 regulations?

Elizabeth Taylor
October 19, 2025 at 10:28 PM
SB-9 (Lot Splits) Torrance, CA
I'm planning to take advantage of California's SB-9 law to split my property in Torrance, but I'm trying to navigate the specific regulations for our city. My lot is currently about 7,500 square feet, and I'm hoping to maximize its potential while staying within a $150,000 budget for the initial phases of development. I've read through some of the statewide SB-9 guidelines, but I'm unclear on how Torrance is implementing the law.

First, does anyone know if Torrance has specific minimum lot size requirements for SB-9 lot splits, or are we just sticking to the state minimums? I'm also curious about any additional constraints that might apply, like setbacks or design requirements, that are unique to our city.

I've gathered that state law allows two units per lot, but does Torrance have any further restrictions or requirements for access or parking that could affect my plans? Lastly, I'm wondering about the timeline for approvals—how long is it typically taking in Torrance from application to approval?

I really want to make sure I'm covering all my bases before moving forward, especially since I've heard that local interpretations of SB-9 can vary quite a bit. Any insights or experiences would be greatly appreciated!

1 Answer

Argi A
October 18, 2025 at 03:26 PM
Hello and thanks for your question about utilizing SB-9 for your property in Torrance! You're making a smart move by exploring the potential of your property under this new law. Let's break down the process and specifics so you can navigate this with confidence.

### Understanding SB-9 and Torrance Specifics

**1. Lot Size and Split Regulations:**
SB-9 allows for the splitting of lots, but the state requires that each resulting lot be no smaller than 1,200 square feet. Torrance aligns with this minimum size, but local zoning and planning departments can impose additional requirements. Since your lot is 7,500 square feet, you're starting from a good position. When split, ensure that each new lot maintains the minimum required size and that no new lot is smaller than 40% of the original parcel size.

**2. Setbacks and Design Requirements:**
While SB-9 generally adheres to state guidelines, Torrance may have specific setback requirements. Typically, you might observe a front setback of 20 feet and a rear setback of 15 feet, with side setbacks possibly around 5 feet. It's crucial to check with Torrance's Planning Department for any overlay zones or design guidelines that may affect building aesthetics or additional constraints on height and style.

**3. Units Per Lot and Additional Requirements:**
Under SB-9, you can indeed have two units per lot. Torrance does not impose additional unit restrictions beyond this, but you must ensure that the new development complies with Torrance's building codes. This includes adherence to fire safety standards, utility connections, and potentially, solar requirements.

**4. Parking and Access:**
Torrance may require one parking space per unit unless your property is within a half-mile of public transit, where parking requirements can be waived. Ensure vehicular access is feasible for emergency services, as this can affect approval.

### Timeline for Approvals

**5. Approval Process:**
In Torrance, expect the planning review for lot splits to take approximately 60-90 days from application submission. This timeline includes a preliminary assessment, detailed review, and any necessary revisions. Be prepared for additional time if your project requires discretionary review or if any variances are needed.

### Budget Considerations

**6. Cost Estimates:**
With a $150,000 budget, focus on the initial phases, such as planning, design, and essential site preparations. A detailed survey and subdivision mapping could cost between $5,000 to $10,000. Architectural design services can range from $10,000 to $30,000 depending on complexity. Permitting fees might add another $5,000 to $10,000. Always obtain multiple quotes to ensure competitive pricing.

### Step-by-Step Guidance

**7. Initial Steps:**
- **Engage a Surveyor:** Start with a detailed property survey to understand existing conditions and potential lot divisions.
- **Consult the Planning Department:** Schedule a pre-application meeting with Torrance's Planning Department to discuss your plans and gather detailed requirements.
- **Hire Professionals:** Engage an architect familiar with SB-9 and local regulations to assist with design and compliance.
- **Budget Wisely:** Allocate your budget carefully, prioritizing essential services and reserving funds for unexpected expenses.

### Common Pitfalls and Tips

**8. Mistakes to Avoid:**
- **Ignoring Local Nuances:** Don’t overlook local regulations; always verify with city officials.
- **Underestimating Costs:** Plan for contingencies; construction often exceeds initial estimates.
- **Skipping Professional Advice:** Legal and architectural advice is invaluable; it can save time and money in the long run.

### Next Steps and Resources

**9. Moving Forward:**
- **Visit Torrance’s Official Website:** Access resources and contact information for local planning officials.
- **Attend Workshops:** Look for local workshops or seminars on SB-9 hosted by the city or local real estate groups.
- **Join Community Forums:** Engage in forums or local community groups for shared experiences and advice.

By following these guidelines and leveraging local resources, you can effectively navigate the SB-9 process in Torrance. Best of luck with your development, and feel free to ask further questions as you progress. Your initiative to thoroughly understand the requirements and process will serve you well in maximizing your property's potential.
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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.

  • Complete privacy
  • Custom design options
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Attached ADU

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

  • Lower construction costs
  • Shared utility connections
  • Family-friendly proximity
Garage Conversion

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

  • Lowest construction cost
  • Faster permitting
  • Uses existing structure
JADU

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

  • Minimal construction
  • No parking requirement
  • Perfect for family use
Upper Floor ADU

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

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  • Great city views
Basement ADU

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

  • Uses existing space
  • Natural temperature control
  • Sound isolation

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
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
  • Tax Benefits: Depreciation allowances
  • Equity Growth: Long-term appreciation
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 Torrance.

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Why Build an ADU in Torrance?

Financial Benefits
Rental Income: Generate $18,000-$48,000 annually
Property Value: Increase home value by 20-30%
Tax Benefits: Depreciation and expense deductions
Investment: Strong ROI in California markets
Lifestyle Benefits
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

Popular ADU Floor Plans

Explore our most popular ADU designs that work well in Torrance, 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
The Cascade

Spacious 2-bedroom design perfect for families. Features open living area, full kitchen, and two full bathrooms with optimal privacy.

Open floor plan
Master suite
Laundry room
Summit ADU Floor Plan - 2 Bedroom, 2 Bathroom
2 Bed 2 Bath 950 sq ft
The Summit

Efficient 2-bedroom layout maximizing every square foot. Great for narrow lots with smart storage solutions throughout.

Compact design
Pantry storage
Two full baths
Brookside ADU Floor Plan - 2 Bedroom, 2 Bathroom
2 Bed 2 Bath 1,400 sq ft
The Brookside

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Sequoia ADU Floor Plan - 3 Bedroom, 2 Bathroom
3 Bed 2 Bath 1,100 sq ft
The Sequoia

Unique 3-bedroom configuration perfect for larger families. Features dual bathrooms and smart space utilization.

Three bedrooms
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Crestline ADU Floor Plan - 3 Bedroom, 2 Bathroom
3 Bed 2 Bath 1,500 sq ft
The Crestline

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Primary suite
Pantry space
Open concept
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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
Ready to Start Your ADU Project?

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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
Get Your Personalized ADU Cost Estimate

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.

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 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)

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.

Professional consultation early in your project can prevent costly mistakes and delays. We've seen how proper planning in the sb-9 (lot splits) phase saves both time and money throughout the entire ADU development process.

Our database contains 85 questions related to SB-9 (Lot Splits), with 85 expert answers providing comprehensive guidance for homeowners facing similar challenges.

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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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Related Topics
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.