Local rules - Western Slope
Outside Montrose city limits, the county makes the rules
Property in unincorporated Montrose County follows county zoning, building, and septic rules rather than city rules, and the county Planning and Building offices are where to confirm them.
Published June 10, 2026 - Last verified June 11, 2026
A Montrose mailing address does not always mean a property is inside the city. Plenty of land in the county is unincorporated, which means it sits outside any town and answers to the county instead.
That changes who you call. In the unincorporated county, zoning, building permits, and land division follow the county’s own regulations, not the City of Montrose code. The county runs its own planning and building offices for this. If you want to build, add a structure, or split a parcel, the county is the office that says yes or no.
Two things catch rural buyers off guard. First, “unincorporated” does not mean unregulated; the county still reviews building and subdivision plans. Second, many rural homes are on a septic system, and the county reviews and permits those onsite wastewater systems. An older system may need inspection or work before a sale closes.
None of this is a roadblock. It just means the county, not a city, is your main contact for rural property questions. Before you buy or build, confirm zoning, permits, and septic rules with the Montrose County Planning and Building offices.