Roofing in Bozeman, Montana

Required

THE 2021 IRC AS AMENDED BY THE STATE -- NAMED ON THE CITY'S OWN PAGE, BUT WITHOUT AN ORDINANCE NUMBER OR THE STATUTE'S "SPECIFICALLY APPLICABLE" LANGUAGE. Bozeman's own "Adopted Codes" page, under "Current Codes - State of Montana Adopted Building Codes," lists "Residential Building Codes (Single-Family, Two-Family, & Townhouse): 2021 International Residential Code (IRC), ARM Rule 24.301.154," and separately notes that rule "Deleted Chapters 11 thru 14 and Chapters 16 thru 43" and added Appendix Q (Tiny Houses). The same page's history of "Previously Adopted Codes" gives dates for earlier code cycles (e.g. "Adopted 3/1/2020" for the 2018 suite, "Adopted 1/12/2015" for the 2012 suite) but names no ordinance number for any cycle, including the current one. Separately, the City's Building Checklists page cites "Ordinance 2143 (August 2023) which amended building fee provisions included in Sec. 10.02.020 of the Bozeman Municipal Code" -- that ordinance amends the FEE schedule, not the code-adoption section, and is not evidence of a code-adoption or dwelling-applicability ordinance. THIS RECORD DOES NOT CONCLUDE THAT THE STATE BUILDING CODE HAS BEEN MADE APPLICABLE TO ONE- AND TWO-FAMILY DWELLINGS IN BOZEMAN BY THE INSTRUMENT MCA 50-60-102(1)(a) REQUIRES. That statute excludes "residential buildings containing less than five dwelling units" from the state building code "unless the local legislative body by ordinance or resolution makes the state building code applicable to these structures," and ARM 24.301.201(1) requires that the ordinance make the code "specifically applicable to those structures." Bozeman's own page describes state code categories; it does not quote or cite a local ordinance or resolution meeting that test. WHAT IS ESTABLISHED, INDEPENDENTLY: the City's own Building Checklists page reviews single-family and duplex ("Residential Single Family / Duplex") construction under an "IRC Code Review" track, distinct from the "Commercial (IBC Code)" track used for 3-or-more-unit projects, and lists "Residential Residing / Re-Roof" as a permit application type with its own "Residential Re-roof Guide." That is first-party evidence the City applies IRC-based review to houses in its own permitting practice, whatever the state of the underlying ordinance. THE CODE-CONTENT FIELDS THIS LEVER WOULD OTHERWISE DEFAULT (roof_layer_limit, deck_sheathing_requirements, drip_edge_required, ice_water_shield_required, impact_resistant_required) ARE OMITTED FROM THIS RECORD RATHER THAN STAMPED. Every one of those defaults, per the state lever, is conditioned on the same applicability predicate this field could not establish for Bozeman: the state-amended IRC reaches a one- or two-family dwelling only where the local legislative body has made it "specifically applicable" to those structures (MCA 50-60-102(1)(a); ARM 24.301.201(1)). Bozeman's own permitting PRACTICE treats houses as under IRC review, but practice is not the ordinance or resolution the statute requires, and this record does not infer one from the other.