San Rafael ADU Developer — Garage, Home, and Backyard Builds
About SYMBiHOM in San Rafael
San Rafael is Marin County's largest city and one of its most active ADU markets. With access to both the ADUMarin county-wide program and San Rafael's own Pre-Approved ADU Plans program, homeowners have a clear permitting path for garage conversions, home conversions, and backyard units. SYMBiHOM is a CA HCD approved ADU Design-Build Developer serving San Rafael homeowners.
Our Credentials in San Rafael
SYMBiHOM holds CA HCD approval and is actively pursuing pre-approved vendor status with the City of San Rafael. San Rafael's program allows design professionals to submit master construction plans for pre-approval — a process we are engaged in.
Permitting in San Rafael
San Rafael's Pre-Approved ADU Plans program covers detached ADUs only. All plans are subject to parcel-specific site review. San Rafael also participates in the ADUMarin county-wide program, which provides additional plan and consultation resources.
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.