Do I need a permit if I am modifying less than 10 sprinkler heads?

Yes, you do need to obtain a permit; however, you do not need to provide plans for review. Plans are not required for automatic sprinkler system modifications or installations in commercial buildings involving 10 sprinkler heads or less, and not involving the shifting of any cross mains or risers, in accordance with Section 4-157, Subtitle 4.

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