Occupancy groups.
NYC Admin. Code § 27-237
in effect§ 27-237 Occupancy groups.
Table 3-1 lists occupancy groups and sub groups that shall be established for classifying buildings and spaces in accordance with the provisions of articles three through twelve of this subchapter.
TABLE 3-1
Occupancy Classifications
Occupancy Group Classification Fire Index
A High hazard 4
B-1 Storage (moderate hazard) 3
B-2 Storage (low hazard) 2
C Mercantile 2
D-1 Industrial (moderate hazard) 3
D-2 Industrial (low hazard) 2
E Business 2
F-1a Assembly (theaters, etc.) 1
F-1b Assembly (churches, concert halls, etc.) 1
F-2 Assembly (outdoors) 1
F-3 Assembly (museums, etc.) 1
F-4 Assembly (restaurants, etc.) 1
G Education 1
H-1 Institutional (restrained) 1
H-2 Institutional (incapacitated) 1
J-1 Residential (hotels, etc.) 1
J-2 Residential (apartment houses, etc.) 1
J-3 Residential (one- and two-family dwellings) 1
K Miscellaneous
Source: City of New York, Charter, Administrative Code and Rules (American Legal Publishing XML export, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/newyorkcity/latest/NYCadmin/0-0-0-48677Fetched: 10/24/2026