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310.1 Residential Group R
Residential Group R includes, among others, the use of a building or structure, or a portion thereof, for sleeping purposes when not classified as an Institutional Group I or when not regulated by the International Residential CodeGroup R occupancies not constructed in accordance with the International Residential Code as permitted by Sections 310.4.1 and 310.4.2 shall comply with Section 420.
310.2 Residential Group R-1
Residential Group R-1 occupancies containing sleeping units where the occupants are primarily transient in nature, including:
310.3 Residential Group R-2
Residential Group R-2 occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature, including:
310.4 Residential Group R-3
Residential Group R-3 occupancies where the occupants are primarily permanent in nature and not classified as Group R-1, R-2, R-4 or I, including:
310.4.1 Care Facilities Within a Dwelling
Care facilities for five or fewer persons receiving care that are within a single-family dwelling are permitted to comply with the International Residential Code provided an automatic sprinkler system is installed in accordance with Section 903.3.1.3 or Section P2904 of the International Residential Code.
310.4.2 Lodging Houses
Owner-occupied lodging houses with five or fewer guest rooms and 10 or fewer total occupants shall be permitted to be constructed in accordance with the International Residential Code, provided that an automatic sprinkler system is installed in accordance with Section 903.3.1.3 or Section P2904 of the International Residential Code.
310.5 Residential Group R-4
Residential Group R-4 occupancy shall include buildings, structures or portions thereof for more than five but not more than 16 persons, excluding staff, who reside on a 24-hour basis in a supervised residential environment and receive custodial care. Buildings of Group R-4 shall be classified as one of the occupancy conditions specified in Section 310.5.1 or 310.5.2. This group shall include, but not be limited to, the following:
Group R-4 occupancies shall meet the requirements for construction as defined for Group R-3, except as otherwise provided for in this code.
310.5.1 Condition 1
This occupancy condition shall include buildings in which all persons receiving custodial care, without any assistance, are capable of responding to an emergency situation to complete building evacuation.
310.5.2 Condition 2
This occupancy condition shall include buildings in which there are any persons receiving custodial care who require limited verbal or physical assistance while responding to an emergency situation to complete building evacuation.

Related Code Sections

Section 310 Occupancy Classification and Use, Residential Group R
Residential Group R includes, among others, the use of a building or structure, or a portion thereof, for sleeping purposes when not classified ...
Section 310 Occupancy Classification and Use, Residential Group R
Residential Group R includes, among others, the use of a building or structure, or a portion thereof, for sleeping purposes when not classified ...
1103.2.11 Accessibility, Residential Group R-1
Buildings of Group R-1 containing not more than five sleeping units for rent or hire that are also occupied as the residence of the proprietor ...
1103.2.11 Accessibility, Residential Group R-1
Buildings of Group R-1 containing not more than five sleeping units for rent or hire that are also occupied as the residence of the proprietor ...
310.3 Occupancy Classification and Use, Residential Group R-2
Residential Group R-2 occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature ...