Sioux City, IA Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- Town house sprinklers
- Requirement deleted
- 1-2 family home sprinklers
- Requirement deleted
- Other deletions
- R302.13, R317.5, R317.6
- Adopted base code
- 2024 IRC, as locally amended
Summary
Sioux City amended the adopted residential code to strike the IRC sections that would have required fire sprinklers in newly built town houses and one- and two-family homes.
8. Delete sections R302.13, R317.5, R317.6 and R309.1 through R309.2.1. NOTE: Deletion of section R309.1, which would have required the installation of sprinklers in newly constructed town houses. Deletion of section R309.2, which would have required the installation of sprinklers in newly constructed one-and two-family residences.
9. Delete section 423 of the currently adopted version of the IBC.
10. Section 903.4.2 Alarms - is amended to read: Approved audible devices shall be connected to every automatic sprinkler system. Such sprinkler water flow alarm devices shall be activated by water flow equivalent to the flow of a single sprinkler of the smallest orifice size installed in the system. Alarm devices shall be provided on the exterior of the building in an approved location. Approved audible visual alarms to alert the occupants of
https://online.encodeplus.com/regs/siouxcity-ia/doc-viewer.aspx#secid-963 8/12/26, 3:47 PM Document Viewer | Municipal Code
the building shall be installed throughout the building in accordance with NFPA 72 and as required by the authority having jurisdiction. Where a fire alarm system is installed, activation of the automatic sprinkler system shall activate the buildings fire alarm system.
11. Delete sections R303.4 and M1507.3 relating to whole house ventilation systems.
Full Breakdown
Sioux City adopts the 2024 International Residential Code by reference but amends Section 20.04.040 to delete Sections R302.13, R317.5, R317.6, and R309.1 through R309.2.1. The amendment's own note spells out the effect: deleting R309.1 removes what would have been a sprinkler mandate for newly constructed town houses, and deleting R309.2 removes what would have been a sprinkler mandate for newly constructed one- and two-family residences. No local rule requires fire sprinklers in that housing type; sprinkler and alarm-activation rules elsewhere in the code still apply to other building types.
Violations & Fines
No sprinkler mandate exists to violate; other Building Code requirements are still enforced as municipal infractions under the Municipal Code's general penalty provision, Section 1.04.100.
Frequently Asked Questions
Does Sioux City require fire sprinklers in new houses?
Are sprinklers required in Sioux City apartments or commercial buildings?
Sources & Official References
Other rules in Sioux City
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