Campbell ADU Developer — Garage, Home, and Backyard Conversions.
About SYMBiHOM in Campbell
Campbell has been one of the fastest-growing ADU markets in Santa Clara County — 70 permits in 2024 alone, up from just 3 in 2017. Whether you're converting a garage, repurposing a room addition, or building a backyard unit, the city's permitting environment is increasingly ADU-friendly. SYMBiHOM is a CA HCD approved ADU Design-Build Developer serving Campbell homeowners.
Our Credentials in Campbell
SYMBiHOM's plans are CA HCD approved and eligible for the streamlined permitting pathway available through the Santa Clara County ADU Plans Gallery, of which Campbell is an active participant. We are also the only pre-approved garage conversion builder on the City of San José's vendor list.
Permitting in Campbell
Campbell participates in the Santa Clara County Planning Collaborative ADU Plans Gallery, giving homeowners access to pre-reviewed designs and a streamlined building permit process.
Animation of Symbihom’s Garage Conversion
What We Build
• Attached or detached garage conversion — studio, 1BR, or 2BR, 300–850 sq. ft.
• Junior ADU (JADU) — attached garage, up to 500 sq. ft.
• Home conversion — convert underutilized interior space into a fully permitted ADU
• Backyard ADU — new detached unit on your existing lot
• State-approved factory-built panel system
• Fully customizable finishes — cabinetry, flooring, fixtures
• ADA-accessible design available
• Sub-metered electricity and water available
Timeline:
Typical build: 4–6 weeks after permits are issued. Designs are customizable across garage conversions, home conversions, and backyard ADUs.
Is Your Property Eligible?
The lot must be zoned residential with an existing single-family home or duplex, and must not be located in a geohazard, landslide, flood zone, or Wildland-Urban Interface area. The property must not have an open Code Enforcement violation.
Not sure if your property qualifies? Fill out the form below. We check zoning and flag any issues before you spend anything.
See SYMBiHOM's Floor Plan Options and Backyard Builds