The following structures constructed after the effective date of the ordinance codified in this chapter shall be equipped with a key lock box:
1. Commercial, industrial, and public structures.
2. Multi-family residential structures (defined as three or more dwelling units for the purpose of this chapter) that have shared or common hallways or entrances.
3. Mixed use commercial and residential structures.
4. Any other structures that have an automatic fire suppression system as defined in the International Fire Code and/or a fire alarm system, except for one and two-family dwellings that have a NFPA 13D fire sprinkler system (Standard for the Installation of Sprinkler Systems in One- and Two- Family Dwellings and Manufactured Homes) and/or a residential fire alarm system.