17C.60.185 Automatic Sprinkler Systems for Other Occupancies.
A. One- and Two-Family Dwellings. Section R313.2 of the International Residential Code is adopted and modified as follows. An approved automatic fire sprinkler system shall be installed in one- and two-family dwellings that meet any of the following:
1. Fire flow calculation area exceeding 5,000 square feet;
2. Located on an unprotected parcel;
3. Located in Fire District 23, Fire District 25 or Fire District 26;
4. Any structure containing three or more townhouse units;
5. Located on Enchanted Island, Raft Island, Herron Island, Tanglewood Island, or Ketron Island;
6. Less than a five-foot setback to a property line; or
7. If access to the property/dwelling unit exceeds a 15 percent grade.
B. Commercial. An approved automatic fire sprinkler system shall be installed in new commercial buildings that meet any of the following:
1. Located in Fire District 23, Fire District 25 or Fire District 26;
2. Located on an unprotected parcel and not meeting one of the criteria found in PCC 17C.60.160;
3. Installation of fire sprinklers were a condition of a land use application; or
4. Located on Enchanted Island, Raft Island, Herron Island, Tanglewood Island, or Ketron Island.