SB-9: Transforming Single-Family Units to 4-Plex

California Senate Bill 9 (SB-9) allows homeowners to convert single-family residences into 4-plexes by simplifying building processes and lot splitting under specific conditions. This legislation aims to address housing shortages and increase property value by adding more units and potential rental income for homeowners.

Introduction to SB-9

California Senate Bill 9 (SB-9), effective from January 2022, is designed to address housing shortages. It allows homeowners to turn single-family residences into 4-plexes by simplifying building processes and lot splitting under specific conditions.

Key Provisions of SB-9

• Building Additional Units: Homeowners can build up to two units on lots previously limited to single-family homes using a streamlined permitting process.
• Lot Splitting: Lots over 2,400 square feet can be split into two, with each new lot being at least 1,200 square feet. This allows for up to four units across the two lots. Restrictions include:

• No further splits on already divided lots
• Owner occupancy required for three years

Criteria for SB-9 Eligibility

• The property must be in an urban lot in a single-family zone.
• It cannot be in a historic district or governed by a prohibitive HOA.
• Properties under affordable housing covenants or rent control cannot be significantly altered.
• The property must not be in high-risk areas for fire, flooding, or seismic activity.

Impact on Cities and Counties

Local governments must comply with SB-9 unless a project poses a specific, unmitigable threat to public health, safety, or the environment.

Choosing Between ADUs and SB-9 Units

Homeowners must decide between ADU regulations or SB-9 provisions based on their project goals and local rules. Factors like height restrictions and HOA regulations play a role, highlighting the need for professional consultation.

In summary, SB-9 helps increase housing density in California by making it easier for homeowners to build additional units and split their properties. This law is a significant step towards addressing the state’s housing crisis by utilizing existing single-family lots.

Key Provisions of SB-9

The SB-9 legislation has various provisions aimed at transforming single-family homes into more versatile properties:

The law allows homeowners to split their lots, making it possible to build additional units. This provision is designed to address housing shortages by increasing the number of available housing units within existing neighborhoods.

Homeowners can construct duplexes on their property under SB-9. By allowing duplex construction, the law encourages densification without altering the character of single-family neighborhoods too drastically.

Eligibility criteria for properties under SB-9 include:

• The property must be located in an urban area.
• Existing homes cannot be modified if they’re in historic districts or areas prone to natural hazards.
• Properties used as rental homes in the past three years are not eligible for redevelopment under SB-9.

There are also certain restrictions to ensure that the new developments are in harmony with existing community standards:

• Homeowners must continue to live in one of the units for at least three years after the lot split.
• The constructed units cannot be used as short-term rentals.

The potential benefits for home builders and residents include:

• Increasing property value by adding more units.
• Providing additional rental income for homeowners.
• Addressing housing shortages by creating more living spaces.

Steps for Converting Single-Family Units to 4-Plex

Converting a single-family unit into a 4-plex involves several key steps. Homeowners must navigate lot splitting, obtain necessary permits, and adhere to local building codes and zoning laws.

1. Lot Splitting

• Verify if your property qualifies for lot splitting under SB-9.
• Consult a land surveyor to divide the property correctly.
• Ensure each new lot meets minimum size requirements.

2. Obtaining Permits

• Apply for the appropriate building permits from your local government.
• Include detailed plans and designs that comply with local regulations.
• Pay any required fees during the application process.

3. Design Considerations

• Work with an architect to develop plans that maximize space and functionality.
• Consider factors like natural light, privacy, and landscaping.
• Plan for parking spaces to meet local standards.

4. Compliance with Local Codes and Zoning Laws

• Research local building codes and zoning regulations to ensure your project adheres to them.
• Schedule inspections throughout the construction process to confirm compliance.
• Address any issues flagged during inspections promptly.

By following these steps, homeowners can successfully transform their single-family units into 4-plex structures while adhering to SB-9 requirements.

Challenges and Opportunities

Transforming single-family units into 4-plexes under SB-9 presents several challenges and opportunities for homeowners.

Challenges

1. Zoning and Permits:

• Navigating local zoning laws and obtaining permits can be complex.
• Homeowners must ensure they comply with all regulations to avoid costly delays.

2. Construction Costs:

• Converting a single-family home into a 4-plex requires significant financial investment.
• Homeowners must budget for construction, utilities, and potential unforeseen expenses.

3. Community Resistance:

• Neighbors may oppose increased density in the neighborhood.
• Addressing their concerns can be time-consuming and stressful.

4. Financing:

• Securing funding for such projects can be difficult.
• Homeowners need to explore diverse financing options, such as those provided by EHD Builders.

5. Parking Solutions:

• Adding more units may create parking challenges.
• Homeowners need to plan adequately to meet parking requirements.

Opportunities

1. Increased Housing Supply:

• SB-9 helps address housing shortages by increasing available units.
• More housing can ease demand and potentially stabilize rental prices.

2. Property Investment:

• Transforming a home to a 4-plex can significantly increase property value.
• It offers potential rental income streams, making it a sound investment.

3. Community Development:

• More housing options can attract diverse residents.
• Mixed-use neighborhoods can enhance local businesses and amenities.

4. Eco-Friendly Solutions:

• Opportunities to incorporate green building practices and artificial turf.
• Helps in promoting sustainability within the community.

5. Enhanced Living Spaces:

• Homeowners can create modern, multi-functional living spaces.
• EHD Builders offers hardscaping and backyard remodeling to enhance outdoor areas too.

Homeowners must weigh these challenges and opportunities carefully. Working with experienced professionals, like those at EHD Builders, can help navigate this transformative process effectively. For personalized advice and a free estimate, contact us today.

FAQ

What is SB-9?

California Senate Bill 9 (SB-9) is a law effective from January 2022 designed to address housing shortages by allowing homeowners to convert single-family residences into 4-plex units through simplified building processes and lot splitting under specific conditions.

What does SB-9 allow homeowners to do?

SB-9 allows homeowners to build up to two units on lots previously limited to single-family homes and to split lots over 2,400 square feet into two, with each new lot being at least 1,200 square feet. This makes it possible to have up to four units across the two lots.

What are the restrictions on lot splitting under SB-9?

Restrictions include:

• No further splits on already divided lots
• Owner occupancy required for three years
• The property must be in an urban lot in a single-family zone
• Cannot be in a historic district or governed by a prohibitive HOA
• Properties under affordable housing covenants or rent control cannot be significantly altered
• The property must not be in high-risk areas for fire, flooding, or seismic activity

How does SB-9 impact local governments?

Local governments must comply with SB-9 unless a project poses a specific, unmitigable threat to public health, safety, or the environment.

What are the benefits of SB-9 for homeowners?

Benefits include:

• Increased property value by adding more units
• Additional rental income for homeowners
• Addressing housing shortages by creating more living spaces

What are the steps for converting a single-family unit into a 4-plex under SB-9?

1. Lot Splitting

• Verify property qualifications
• Consult a land surveyor
• Ensure new lot meets size requirements

2. Obtaining Permits

• Apply for building permits
• Include detailed plans and designs
• Pay required fees

3. Design Considerations

• Work with an architect
• Plan for factors like natural light, privacy, and landscaping
• Ensure adequate parking

4. Compliance with Local Codes and Zoning Laws

• Research local codes
• Schedule inspections
• Address any issues flagged during inspections

What challenges do homeowners face with SB-9 projects?

Challenges include:

• Navigating local zoning laws and obtaining permits
• Significant financial investment for conversion
• Potential community resistance
• Difficulty in securing project funding
• Planning for adequate parking solutions

What opportunities does SB-9 present for homeowners?

Opportunities include:

• Increased housing supply
• Significant property value appreciation
• Potential rental income streams
• Attraction of diverse residents
• Incorporation of eco-friendly building practices
• Creation of modern, multi-functional living spaces

What should homeowners consider when choosing between ADUs and SB-9 units?

Homeowners must consider factors like project goals, height restrictions, and HOA regulations. It is advised to consult with professionals to determine the best approach based on local rules and individual project needs.