Whenever a subdivider proposes to subdivide any land within an incorporated city in a county whose population is 100,000 or more, and the proposed subdivision is within 1 mile of the boundary of an unincorporated area of the county, the planning commission of the city or its designated representative, or, if there is no planning commission, the governing body of the city or its designated representative shall forward a copy of the subdivider's tentative map:
NRS 278.345