This is the question almost nobody answers properly, and the answer depends entirely on where you are. In most US states, including California, Texas, Florida, New York, Georgia, Arizona, Colorado, Illinois and North Carolina, collecting rent, negotiating rental terms, or advertising on an owner's behalf for compensation requires a real estate broker's licence. The job title does not matter. Co-host, property manager and rental agent all land in the same place. The dividing line is usually money and terms. North Carolina's regulator puts it cleanly: an unlicensed co-host may hand over keys, coordinate cleaning and repairs, and be the guest's point of contact. They may not place ads, negotiate rental terms, or handle money. A handful of states do not require it at all. Idaho, Kansas, Maine, Maryland, Massachusetts, Vermont. Quebec is more permissive than most people assume. Rental brokerage has not been a reserved activity for licensed brokers since 2018, so no OACIQ licence is needed to manage a rental for someone else and charge a fee. What is not optional is CITQ registration for any stay of 31 days or less, and in some municipalities a separate permit on top of it. None of this is legal advice, and these rules move. Check your own jurisdiction before money changes hands. Where are you hosting, and do you know what your local rule actually is?