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SB9 California Housing: Maximize Your Property’s Potential Without ADU Limits | VitalizeBuild

  • Writer: Chen Zhou
    Chen Zhou
  • May 27
  • 4 min read

Updated: May 29

In California’s high-cost housing market, where average home sizes often can’t keep up with changing lifestyles, maximizing every square foot is essential. Whether it’s welcoming aging parents, raising a growing family, or adapting to remote work, homeowners across the Bay Area are realizing that Accessory Dwelling Units (ADUs) alone aren’t always enough.


While ADUs have been a go-to solution, SB9 California Housing offers a smarter path for homeowners needing more square footage, flexibility, and long-term value.


ADUs gained popularity for adding rental income or housing relatives. But strict regulations cap their size (often under 1,200 sq ft), limit height to one story, and require costly setbacks. For growing families like Priya and Miguel in San Jose, these constraints made ADUs impractical.



SB9 Unit Visualization
SB9 Unit Visualization


A Growing Family, A Shrinking Home


When Priya and Miguel bought their 1,100-square-foot home in San Jose, it felt right for them and their young daughter. Nestled in a quiet neighborhood, it marked their first step into homeownership.


But when Priya got pregnant with her second child, their home fell short of space. The couple realized they’d need extra hands at home to help Priya manage things post-delivery. With just two bedrooms and one shared bathroom, it was clear: they needed more room, and they needed it quickly—ideally before her parents moved in to help.


When an ADU Isn’t Enough to Suffice the Growing Family


Their first instinct was straightforward: build an ADU in the backyard. After all, it’s a popular solution for California families needing extra space. But when they reached out to the contractors, they got to know that local zoning regulations capped ADUs at 1,200 square feet—and often less once setbacks, height limits, and design constraints were factored in


Tearing down their existing home and rebuilding from scratch felt far too drastic for Priya and Miguel. The high cost, months of disruption, and the challenge of relocating with two small children and aging parents made it nearly impossible. Buying a larger home nearby wasn’t an option either—the skyrocketing prices had already put that out of reach. 


What they needed was a smarter path forward—one that added space, offered long-term flexibility, and allowed them to stay rooted without turning their lives upside down.


Enter SB9 California Housing and VitalizeBuild


Priya consulted a neighbor about their space crunch and ADU roadblocks. Her neighbor asked, “Have you looked into SB9 California Housing?”


Intrigued, Priya went home and started researching. Passed in 2022, SB9 California Housing lets homeowners split their lot or build a second full-sized unit, with more space than an ADU, two-story options, 4-foot setbacks, and an expedited permitting process.


The neighbor also recommended VitalizeBuild, the local team they trusted for their own project. Known for handling design, permits, and construction seamlessly, VitalizeBuild could be the right partner, recommended the neighbor.


The following week, Priya and Miguel reached out to VitalizeBuild — experts in SB9 California Housing and ADU projects.


From the beginning, Vitalizebuild’s in-house team of architects, designers, builders, and project managers worked together seamlessly to develop a plan that maximized their lot without demolishing their original home. They handled everything—from initial design and permit applications to final construction.


Under SB9 California Housing, VitalizeBuild delivered:

  • A 2,000-square-ft two-story second home on their lot.

  • Seamless Permitting: Expedited approvals via SB9’s streamlined process.

  • Rental Income: Their original home now earns $5,000/month, offsetting costs.



Exterior View of a SB9 Unit Design
Exterior View of a SB9 Unit Design


SB9 vs. ADUs: Key Differences


Feature

ADU

SB9 Home

Max Size

1,200 sq ft

Capped by Floor Area Ratio and Lot Coverage

Height limit

16 feet in most jurisdiction

Same as the main house, often times 2-story is allowed

Lot Splitting

No

Yes, but don't need to

Rental Potential

Limited by size

Full-sized home, can add additional ADU if needed


A Scalable, Smarter Solution with SB9 California Housing & Vitalizebuild


Today, Priya, Miguel, their kids, and her parents enjoy a spacious custom home built around their lifestyle. The original house remained untouched, generating steady rental income that offsets their new mortgage.


For families needing more space without leaving their neighborhood or starting from scratch, SB9 offers a smart path forward. VitalizeBuild made it all happen 


  • ADU and SB9 Expertise: With deep experience across the Bay Area, VitalizeBuild’s in-house team transforms visions into reality with precision and artistry.

  • Exceptional Customer Service: Clear communication, fast responses, and a client-first attitude define every step of the process.

  • All-in-One Solutions: From design and permits to construction and official approvals, VitalizeBuild handles it all under one roof.

  • Beyond Construction: Post-construction, they offer full property services—renting, repairs, maintenance, even landscaping—ensuring your investment remains profitable and low-stress.


If your family is growing—and your home isn’t—you don’t have to move or demolish. With the right partner, SB9 California Housing can unlock transformative potential in your existing property.

Just like Priya and Miguel, you can create more space, more comfort, and more financial security—without sacrificing your location or lifestyle.


Contact VitalizeBuild today to explore your options under SB9 and start designing the home your family truly needs.


Explore how SB9 can unlock your property’s potential. Serving San Jose to San Francisco, and the greater Bay Area.



 
 
 

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