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How long does obtaining all permits to build an ADU in California take?

The amount of time it takes to get all of the necessary permits can vary depending on the project's specifics and the workload of the local building department, ranging from a few weeks to several months.

California Department of Building & Safety employee reviewing ADU plans

The permit process typically involves multiple steps, including submitting an application to the building department, reviewing the plans and specifications for the ADU, and obtaining any required inspections or approvals. Each of these steps can take time, and the overall process can be slowed by factors such as incomplete or incorrect applications, changes to the plans or specifications, or other issues.

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