Cupertino ADU Developer — Garage, Home, and Backyard Conversions.
About SYMBiHOM in Cupertino
Cupertino maintains one of the most homeowner-friendly ADU permitting programs in Santa Clara County — its Pre-Approved ADU Program is described by the city as the fastest and lowest-cost permitting path available. That path is open to garage conversions, home conversions, and backyard ADUs. SYMBiHOM is a CA HCD approved ADU Design-Build Developer ready to put that pathway to work for Cupertino homeowners.
Our Credentials in Cupertino
SYMBiHOM's plans are CA HCD approved and eligible for the City of Cupertino's Pre-Approved ADU Program. We are also the only pre-approved garage conversion builder on the City of San José's vendor list — the most active ADU program in Santa Clara County.
Permitting in Cupertino
Cupertino's Pre-Approved ADU Program offers pre-approved plans for detached ADUs. Final approval is subject to site-specific review. The city describes this as the fastest and lowest-cost permitting path available to Cupertino homeowners.
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 availableand Backyard Builds
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.