Investment Property Loans in Charleston, SC

Charleston grants residential short-term rental permits only to a record owner who lives on the property at least 183 days a year, votes from that address, and is taxed at the 4% owner ratio.

For investors: A home bought as a pure investment cannot qualify, because the city checks the county assessor's 4% legal residence status and the owner's driver's license and voter address. Underwrite Charleston purchases on 30-day or longer leases.

Source: City of Charleston Zoning Ordinance (Municode), §54-120 definition of Resident, Oct 2026

Each Charleston residential STR permit allows one unit for up to four adults, needs one extra off-street parking space, must be renewed yearly, and the owner must sleep on site while guests stay.

For investors: Even an owner-occupant with a carriage house earns from only one STR unit, and the owner must keep a general liability policy of at least $1,000,000 per occurrence. A new owner must recertify the permit after a sale, so it never simply transfers.

Source: City of Charleston Zoning Ordinance (Municode), §§54-208 to 54-208.3, Oct 2026

Short-term rentals without a resident owner are limited to lots zoned for business or mixed use inside Charleston's mapped ST overlay zone, with no more than nine converted units per lot.

For investors: The overlay is the only path to an investor-run nightly rental in the city, and it excludes residentially zoned houses. Confirm a listing's base district and overlay on the city zoning map before paying a premium for vacation rental income.

Source: City of Charleston Zoning Ordinance (Municode), §54-227 Short Term Rental, ST Overlay Zone, Oct 2026

Stays under 30 days in the Charleston County part of the city carry 14% in combined sales and accommodations taxes, or 12% in the Berkeley County part, and the owner must see them remitted.

For investors: Some booking platforms remit only the state accommodations tax, leaving the county and city shares to the owner. On Daniel Island and Cainhoy addresses in Berkeley County the county accommodations tax drops off, which explains the lower rate.

Source: City of Charleston, Accommodations Tax for Short Term Residential Rentals, Oct 2026

Starting with the license year that began May 1, 2026, Charleston bills short-term rentals as their own business license subclass: $145 on the first $2,000 of income plus $6 per extra $1,000.

For investors: City Council ratified the change on December 2, 2025, but the city's STR fee page still quotes the older $64 plus $3.90 rate. Licenses expire April 30 each year and renew on the prior year's gross income.

Source: City of Charleston, Business License Ordinance and Rate Schedule (Chapter 17 with Ord. No. 2025-152, ratified Dec. 2, 2025), Dec 2025

Charleston exempts owners of fewer than five residential units that hold no short-term rental permit from the business license class for residential landlords.

For investors: A small portfolio of long-term rentals can skip the city license, but the fifth unit or any STR permit brings that rental income under the license tax. Track unit counts across LLCs and ask the Revenue Collections Division how it aggregates them.

Source: City of Charleston, Business License Ordinance and Rate Schedule (Chapter 17 with Ord. No. 2025-152), Appendix B class schedule, Dec 2025

Charleston allows one ADU of up to 850 square feet with a single-family home; a recorded covenant requires owner occupancy of one unit, caps the ADU at two adults, and bars short-term renting.

For investors: An ADU adds rent only for an owner living on site: if neither unit is owner-occupied, the ADU cannot be leased separately. The covenant is recorded with the Register of Deeds and binds the next buyer, so check it during title review.

Source: City of Charleston Zoning Ordinance (Municode), §54-214 Accessory dwelling unit, Oct 2026

For tax year 2025, parcels in the Charleston County part of the city were levied 298.1 mills: 82.0 for the city and 216.1 countywide, per the county auditor's millage card.

For investors: The auditor's sample bill gives owner-occupants a 142.5-mill credit for school operating taxes, which a rental never gets. Estimate a rental's escrow from the full 298.1 mills on its assessment, then check the last bill for credits and the solid waste fee.

Source: Charleston County Auditor, 2025 Millage Levy card, Sep 2025

On FEMA's October 2026 list the City of Charleston's floodplain program sits at Class 6, a 20% cut on eligible federal flood policies, while Charleston County earns Class 2 and 40%.

For investors: The county class covers unincorporated areas only, so a James Island or Johns Island address inside city limits gets the city's 20%, not 40%. Confirm the jurisdiction on the parcel record before comparing flood quotes across nearby streets.

Source: FEMA, CRS Eligible Communities list (effective October 1, 2026), Oct 2026

In Charleston's special flood hazard areas, new homes must sit at least two feet above base flood elevation, and substantially improved homes at least one foot above it.

For investors: Renovation spending counted over any one year that reaches half the structure's market value triggers the elevation rule, though the building official can treat listed historic structures differently. Scope a rehab against that threshold early and price raising the house before buying in a flood zone.

Source: City of Charleston Code of Ordinances (Municode), §27-117 Specific standards, Oct 2026

Charleston's stormwater utility fee is $132 a year per single-family parcel from January 1, 2026, billed on the county property tax bill; homes with a county homestead exemption can apply to be excused.

For investors: Rental houses pay the full fee because the homestead exemption is for qualifying resident owners. Condominium units are billed by their share of impervious area instead, so ask for the last tax bill when comparing a condo with a house.

Source: City of Charleston Code of Ordinances (Municode), Chapter 27, Article III Stormwater Management Utility (Ord. No. 2025-083), Oct 2026

MUSC, founded in Charleston in 1824, is South Carolina's only comprehensive academic health system and educates more than 3,200 students a year while training over 900 residents and fellows.

For investors: Students, residents and fellows rotate on fixed academic calendars, which supports steady leasing near the peninsula's medical district. Because investor nightly rentals are confined to the overlay zone, these 30-day-plus tenants are the natural market for furnished units.

Source: Medical University of South Carolina, About MUSC, Oct 2026