Alameda County ADU Developer — Garage, Home, and Backyard Builds.
About SYMBiHOM in Alameda County
Alameda County is one of the Bay Area's most active ADU markets — unincorporated Alameda County alone issued 121 ADU permits in 2024, with cities like Oakland, Fremont, and Hayward adding hundreds more. The county offers a well-established permitting path for garage conversions, home conversions, and new backyard units. SYMBiHOM is a CA HCD approved ADU Design-Build Developer serving Alameda County homeowners.
Our Credentials in Alameda County
SYMBiHOM's plans are CA HCD approved — a statewide approval that applies to every Alameda County jurisdiction. We are also the only pre-approved garage conversion builder on the City of San José's official vendor list, bringing that same proven, pre-vetted process to Alameda County homeowners.
Permitting in Alameda County
Alameda County and its cities collaborate on the Alameda County ADU Resource Center, a county-wide program guiding homeowners from feasibility to move-in. Under state law, jurisdictions must approve or deny a complete ADU application within 60 days — plan-check typically runs 4–8 weeks. Oakland, Fremont, Hayward, and San Leandro also offer pre-approved plan programs.
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.