ADU Fire Sprinkler Questions
Fire protection decisions depend on the project, existing residence, and applicable requirements. Raise the question early with the reviewing agency and design professional rather than relying on a general answer for another property.
Requirements depend on your property and the agency reviewing it. Confirm current details with that agency before finalizing plans.
Questions to consider
- Identify whether the existing residence has a sprinkler system
- The City of San Diego bulletin states that an ADU does not need automatic sprinklers if they are not required for the primary dwelling, and describes different treatment where the primary dwelling is protected.
- The same City bulletin lists sprinkler requirements for its affordable and bonus ADU programs; confirm the category and applicable fire code before using the general rule.
- Describe whether the proposed unit is attached, detached, or a conversion
- Ask the reviewing agency about the applicable fire-protection review
- Include any required design and installation work in the written scope
Official resources
Common questions
Will my ADU require sprinklers?
Ask the reviewing agency to assess the proposed unit and existing residence under the current requirements. The City of San Diego ADU bulletin discusses its requirements.
What should I include when comparing quotes?
Ask each professional to identify the fire-protection work included, any specialist services, and work or fees excluded from the proposal.
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