Chapter 9, Section 903.2.8, Group R, is hereby deleted in its entirety and the following provisions shall be substituted therefor:

An automatic sprinkler system installed in accordance with Section 903.3 shall be provided throughout all buildings with a Group R fire area.

Exceptions:

1. An automatic sprinkler system is not required for a building containing not more than two (2) single-family dwelling units, in combination with other nonresidential occupancies, provided however, that a fire alarm and detection system shall be installed and monitored in accordance with NFPA 72. The system shall be installed in the residential units as well as the nonresidential occupancy areas.

2. An automatic sprinkler system is not required for buildings consisting solely of four (4) units or less.