Short-Term Rentals at Georgetown Lake, Granite County

The rule is narrower than 'no rentals': primary-residence Airbnb is treated differently

Granite County's published guidance for the Georgetown Lake Zoning District states that rental units are not allowed on properties within the district. But that prohibition targets 'rental units' as a use or structure category -- it is not the same as a blanket ban on short-term rental income. An owner who wants to rent out their existing primary structure through a platform like Airbnb or VRBO is specifically addressed by a separate rule: they're required to contact the Tri-County Sanitarian's office at (406) 563-4035 before listing, rather than being barred outright. In practice, this means the district's real distinction is between building or establishing a rental unit (a use the zoning district doesn't allow) and renting the residence you already have (which is allowed, subject to sanitarian notification).

If you're evaluating a Georgetown Lake property specifically because you want short-term rental income, confirm with Granite County Planning exactly how the property currently is, and would be, classified: as an existing single-family residence you'd occasionally list, or as a purpose-built or converted rental unit. That classification -- not the property's location or listing description -- is what determines which side of the rule you're on.

Five or more units triggers a second, separate review: the Rent and Lease Regulations

Beyond the zoning-district-specific rule at Georgetown Lake, Granite County has a countywide layer that applies wherever a property owner establishes more than five rental units on a single property -- cabins, multi-family units, apartments, or similar -- which requires review under the county's own Rent and Lease Regulations. This is a distinct regulatory process from zoning district review, and it applies on a countywide basis, not just at Georgetown Lake. A buyer planning a small cluster of rental cabins or a multi-unit rental development anywhere in Granite County, not just within the lake zoning district, should ask Planning whether the Rent and Lease Regulations apply and what that review involves before committing to a project of that scale.

The zoning district's authority has already been tested in court

A buyer skeptical of the Georgetown Lake Zoning District's authority to impose rules like the rental-unit restriction should know that the district's creation has already been legally tested: the Montana Supreme Court upheld the creation of the Georgetown Lake zoning district as consistent with both state law and the county's Growth Policy. That means the district's basic legal authority to zone the area and impose use restrictions is settled, not an open question -- a specific rule's current text, exceptions, or enforcement approach can still be worth confirming with the county, but a challenge to the district's fundamental validity is not a live option.