MT SB121

Adds a new definition of "development application" and clarifies that local governments may make decisions on development applications, with approval of such applications now explicitly included as an "agency action"

Establishes a mandatory 15-business-day written public comment period for proposed developments, during which the public can comment on the planning administrator's initial determination of compliance with zoning and subdivision regulations

Allows municipalities to retain extraterritorial zoning authority under existing provisions (76-2-310 and 76-2-311) and permits cities to continue participation on existing city-county planning boards authorized under Title 76, chapter 1

Requires public hearings with published notice when the planning commission or governing body hears appeals of land use decisions, with appeals heard de novo

Certain sections (11 through 13, relating to zoning and subdivision review procedures) terminate on June 30, 2027; the act is effective immediately upon passage and approval