Pueblo, CO Building Safety: Fire Sprinkler Requirements (2026)

Pueblo's residential building rules come from Chapter 6 of Title IV of the Pueblo Municipal Code, which adopts the International Residential Code, 2021 Edition, by reference in Section 4-6-1. Section 4-6-2 then lists the local amendments, and two of them, subsections (m) and (n), control residential fire sprinklers.

Subsection (m) amends the exception to I.R.C. Section R313.1, "Townhouse automatic fire sprinkler systems." That section is the model code's sprinkler requirement for townhouses, and Pueblo attaches two exceptions to it. Exception #1 says a sprinkler system is not required when additions or alterations are made to existing townhouses that do not already have a system installed. A remodel or addition to an older unsprinklered townhouse therefore does not trigger a retrofit of the whole unit. Exception #2 says a system is not required with four or less attached dwelling units when the units are separated in accordance with Section R302.2.2 item 2, the I.R.C. provision on how attached townhouse units are separated from one another. A short row of four or fewer townhouses built to that separation standard is exempt. A longer row, or a row that does not meet that separation, stays subject to R313.1.

Subsection (n) goes further for detached homes and duplexes. It states that Subsection R313.2, "One- and two-family dwellings automatic fire systems," is deleted. Pueblo therefore does not require sprinklers in a single-family house or a two-family dwelling, which is the biggest cost difference between Pueblo and jurisdictions that keep the model code's R313.2 intact.

Administration sits with the Southern Colorado Building Department. Section R103 as amended delegates enforcement to that department, and the Building Official and inspectors carry the authority of a law enforcement officer, including issuing summons and complaints. Section 4-6-5 limits the Building Official to judging compliance with the adopted standards, not inventing requirements the code does not contain. The current text of Section 4-6-2 reflects amendments through Ordinance No. 11082 (November 24, 2025) and Ordinance Nos. 11199 and 11200 (both June 24, 2026).