What are the NYC rules for a sprinkler system
What are the rules for a residential home? Is it a certain number of stories, certain height, or what?

trini73diva
in General Discussion 3 years and 10 months ago
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cate | 3 years and 10 months ago
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Thanks, jimhillra, this is great information.

jimhillra | 3 years and 10 months ago
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Not necessarily, Cate. The NYC Building Code requires sprinklers inexisting buildings when changing the use (in residential, one- and two-families are the same use, three and up are another use), when the construction budget exceeds a % of the DOB assessed value of the building (usually roughly equal to the DOF assessed value, not the sale cost), as well as other, less common alterations, and in most new buildings.
The FDNY code (https://on.nyc.gov/3ki39w1 section 501.4.3.1 and its subsections) also lists several other triggers, specific to buildings on narrow streets (less than 38′ curb to curb, which is most streets and some avenues). These pertain to the cost of alterations during a one year period, change in use, change in floor area, change in height, and converting a basement to a separate apartment.
In cases where one code requires sprinklers, but the other does not, the more stringent code applies.

cate | 3 years and 10 months ago
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My understanding is the requirement to add a sprinkler system is triggered if you increase the number of units in a building, but I am not an expert.

Guest User | 3 years and 10 months ago
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