An LLC with only one member is a disregarded entity and you would file everything on the Sch E unless you are providing substantial services, then you use Sch C. Schedule C is also used for renting personal items as a business, like your car or boat.
An LLC with more than one member is a different story. If you are married and in a community property state, you can still file the sch E. Otherwise, you are in a partnership.
See:
IRS LLC - classifications
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