Primary-Residence-Only Rule
Charleston County does not impose a blanket primary-residence-only rule. A Limited Home Rental must be owner-occupied, but an Extended Home Rental may be owner-occupied or non-owner-occupied. The permit application asks whether the property is owner-occupied.
Owner-Occupancy Rules for Charleston County STRs
Some RestrictionsCharleston County ZLDR Article 6.8 (Extended Home Rental)
An Extended Home Rental is a property with an owner-occupied or non owner-occupied residential dwelling, located in the S-3, R-4, M-8, M-12, or MHS Zoning Districts... for more than 72 days but not to exceed 144 days in the aggregate during any calendar year.