Symbium Build
Unlock a Property’s Accessory Dwelling Unit Potential
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Learn instantly if you can have an Accessory Dwelling Unit on a property
Symbium Build helps homeowners, design professionals, and planners quickly determine if an Accessory Dwelling Unit (ADU) is allowed on a property.
Find an ADU design that fits the site, local requirements, and your needs
Symbium Build’s marketplace gives homeowners the ability to drag and drop ADU floor plans onto a map of their property and see how they suit the property and meet local zoning requirements. Homeowners interested in taking the next step can use Symbium Build to find and connect with design professionals.
Understand the process and requirements
Symbium Build helps homeowners, design professionals, and planners navigate the State and local ADU regulations and understand how they specifically apply to a property. Symbium Build reports relate the rules and process that must be followed to get an ADU planned, permitted, and constructed in an easy-to-understand way.
Our Coverage:
8 Cities
6.9 Million in Population
We currently cover Los Angeles, San Jose, San Francisco, San Mateo County, Fontana, Redwood City, Orinda, and Pacifica. We will soon cover the City of San Mateo, East Palo Alto, and more.
Frequently Asked Questions

Accessory Dwelling Units are known by many names — including ADU, second unit, in-law unit, granny flat, casita, and backyard home. But, no matter what you call them, these are homes located on the same piece of property as another home. They provide a complete and permanent home for at least one person. To learn more, visit Symbium’s Knowledge Base.

Symbium Build is currently live only in California. All active cities can be found at Symbium Build.

Symbium Build is available for homeowners and professionals to access and perform searches free of charge. For local and state governments that want coverage in areas we do not yet cover, we charge an annual licensing fee that is often below a city’s procurement threshold to activate the rules and regulations specific to your city on Symbium Build. Send us a message to learn more. Someone from the Symbium team will respond promptly.

That depends on how quickly we can coordinate a kickoff and deployment schedule with City staff. It can take anywhere from weeks to months.

Some cities have procured Symbium Build, Symbium Build+, and Symbium Build Business under sole source procurement.

We understand that most people are already feeling the crunch and do not have the bandwidth to assume additional time-consuming roles to deploy tech. A typical activation with Symbium takes 2-3 weeks (based on how quickly we can obtain responses from our city partners) and we typically need not check in more than once a week.

Yes, Symbium offers email support to our partners at no additional charge. It’s as easy as contacting your account executive or contacting Symbium directly via our contact page.

We do not charge any additional fees for support or updates. We have flat-fee, transparent pricing so that you can budget our products in advance without any surprises. Even when the regulations change, we will update the associated products for you at no additional charge.

If you're a homeowner or professional, you can use Symbium Build in any of our current cities or jurisidctions for free right now. If you want coverage in a new city or jurisdiction, send us a message to learn more. Someone from the Symbium team will respond promptly.

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