Buying a Second Home in Charleston

Charleston is one of the most desirable second-home markets in the country — an oceanfront condo on Isle of Palms, a cottage on Folly Beach, a villa at a Kiawah or Seabrook golf resort, or a historic place downtown. But it's also one of the most tightly regulated short-term-rental markets in the Southeast, and the rules change dramatically from one town to the next. The single most important lesson for second-home buyers here is simple: demand does not equal legality. Before you assume a property can be rented short-term, confirm the local ordinance for that exact address. This guide covers taxes, financing, the municipality-by-municipality rental rules, and the real carrying costs.

How second homes are taxed

A second home is assessed at South Carolina's 6% property-tax ratio — not the 4% owner-occupied rate — and does not receive the school-operating-tax exemption that primary residences get. On the same physical house, that makes the annual property-tax bill meaningfully higher than it would be for a primary resident. Factor the 6% rate into your budget from the start. See the taxes guide for the full picture.

Financing a second home

Lenders treat a true second home (for your personal use) differently from an investment property you intend to rent out. Second-home loans typically allow lower down payments and better rates than investment-property loans, but if your plan is to rent the property short-term, you may be financed and underwritten as an investment — which usually means a larger down payment and a higher rate. Be honest with your lender about intended use; it affects both your financing and, in some towns, your eligibility to rent at all.

Short-term rental rules, town by town

This is where Charleston trips up out-of-town buyers. Each municipality sets its own rules, and several cap or effectively prohibit short-term rentals:

• Isle of Palms — the most rental-friendly of the beach towns. No permit cap (residents rejected a proposed cap in 2023), but you need a business license, must report rental revenue, observe occupancy limits (generally two per bedroom plus two, up to a maximum of 12), and maintain a 24/7 local contact who can respond quickly to complaints. Wild Dunes is the marquee resort area.
• Folly Beach — allowed but capped. In 2023 residents voted to cap short-term rentals at 800 island-wide, with tiered license categories and fees. Demand is strong, so the practical question is whether a permit is available, not just whether the property qualifies.
• City of Charleston — allowed but heavily regulated, with defined categories and a three-strike enforcement approach. On the peninsula, short-term rentals generally require the owner to declare the property a primary residence and be present, with strict limits; rules differ off-peninsula. Permits are non-transferable and renewed annually.
• Mount Pleasant — capped at 400 permits and effectively closed to new applicants. Entry usually requires buying a property that already holds a viable permit.
• Sullivan's Island — short-term rentals are effectively prohibited. Rentals under 30 days are not allowed except for a handful of properties grandfathered before the 2002 ordinance. Treat this as a hard stop.
• Kiawah and Seabrook — resort islands where vacation rentals are an established part of the model, though Seabrook adopted a short-term-rental overlay and conditional-use updates in 2024 and 2025 with permit limits. Resort and HOA rules apply on top of town rules.
• Unincorporated Charleston County (parts of West Ashley and James Island, most of Johns Island, and rural areas) — requires a permit and falls into zoning categories: Limited Home Rental (owner-occupied, up to 72 days a year), Extended Home Rental (investment, up to 144 days, requiring a special exception), and Commercial Guest House in commercial zones.
• North Charleston — short-term rentals are permitted with rules, including occupancy of two guests per bedroom up to a maximum of eight, and parking requirements.

HOA and regime (condo) rules can be stricter than the town's, and state legislation that could shift local control has been introduced — so always confirm both the current municipal ordinance and any HOA covenants before you buy. A local agent who tracks these ordinances is invaluable here.

The rental tax stack

If you do rent short-term, you'll collect and remit a stack of taxes: South Carolina's sales tax, the state accommodations tax, a Charleston County accommodations fee, and any municipal tax. You must register with the South Carolina Department of Revenue and the county, and you remain responsible for proper remittance even if a booking platform collects some of it. Model the full tax stack before underwriting any rental income.

Oceanfront, island, and downtown trade-offs

Oceanfront and island properties command the highest prices and the strongest rental demand (where allowed), but they also carry the highest insurance and the most exposure to wind and flooding. Historic downtown properties offer year-round appeal and walkability but come with preservation rules and peninsula flood considerations. Marsh-front and Intracoastal properties split the difference. Browse Charleston condos and luxury homes to compare, and read our climate and hurricanes guide on flood zones.

Budgeting the real carrying cost

A realistic second-home budget includes the 6% property tax, windstorm-and-hail and flood insurance (which can be substantial on the coast), HOA or regime fees, maintenance in a salt-air environment, and — if renting — management, cleaning, and the tax stack. Gross rental revenue can look attractive, but net returns after these costs and seasonal vacancy are often far lower. Run the full numbers before you buy.

Frequently Asked Questions

Can I rent my Charleston second home on Airbnb?

Sometimes — but it depends entirely on the municipality. Sullivan's Island effectively bans short-term rentals; Mount Pleasant is capped and effectively closed; Folly Beach is capped at 800; Isle of Palms is the most permissive; and the City of Charleston has strict, category-based rules. Always verify the ordinance for the specific address first.

What is the property tax rate on a second home in South Carolina?

Second homes are assessed at a 6% ratio (versus 4% for a primary residence) and don't get the school-operating-tax exemption, so the bill is meaningfully higher than for an owner-occupant on the same home.

Which Charleston beach town is best for a rental property?

Isle of Palms is generally the most rental-friendly because it has no permit cap, while Kiawah and Seabrook support resort rentals. Folly Beach allows rentals but caps them; Sullivan's Island effectively prohibits them. Match the town's rules to your goals before choosing.

Do I need a license to rent short-term in Charleston?

Yes — virtually every municipality requires a permit or business license, plus registration for accommodations and sales taxes. Many also impose occupancy limits, parking rules, and a local-contact requirement, and permits are often non-transferable.

What taxes apply to short-term rentals in the Charleston area?

A combination of state sales tax, the state accommodations tax, a Charleston County accommodations fee, and any local tax. You register with the SCDOR and the county and are responsible for remittance even when a platform collects part of it.

Is a Charleston second home a good investment?

It can be, but only after you confirm legal rental eligibility, model the full carrying cost (6% tax, coastal insurance, HOA, maintenance, management), and account for seasonality. Demand is high; legality and net returns are the variables that matter.

Keep Reading

• Relocating to Charleston: The Complete Guide
• South Carolina Taxes
• Charleston Climate and Hurricanes
• Charleston Cost of Living

This page is general information, not legal, tax, or investment advice. Short-term-rental ordinances, caps, and tax rates change frequently and vary by municipality and HOA; verify the current rules for a specific property with the relevant town, Charleston County, and the South Carolina Department of Revenue before buying.