In-depth analysis

Should you buy an STR in Charleston in 2026?

Charleston’s STR market is structurally one of the most attractive in the Southeast — $312 ADR, 68% occupancy, $212 RevPAR — and structurally one of the hardest to enter. The peninsula’s 2018 ordinance restricts whole-home short-term rentals to specific overlay districts (most notably Cannonborough-Elliotborough and limited downtown zones), caps STRs by district, and limits bedroom counts. The result: the legal supply is essentially fixed and existing permitted properties trade at material premiums to their non-permitted counterparts. The numbers work for buyers who underwrite the permit premium correctly; they don’t for buyers who treat the city like a permissive market.

Regulation: where the city stands

Charleston has three STR categories on the peninsula:

Commercial STR in commercially-zoned districts — generally permitted with permit and bed-and-breakfast-style rules.
Residential STR in the designated Old & Historic District and Old City District — restricted to owner-occupied operations.
Limited STR in specific overlay districts — non-owner-occupied permitted, but limited to 4 bedrooms, capped by district, with separation requirements between properties.

Outside the peninsula (West Ashley, Mount Pleasant, James Island, Folly Beach, Sullivan’s Island, Isle of Palms) each jurisdiction has its own rules. Folly and Sullivan’s are STR-friendly with permit. Isle of Palms and Mount Pleasant have layered their own restrictions.

The city’s STR permit registry is public. Verify exact permit status, transferability, and any open violations before offer.

The market by the numbers

Metric	Peninsula Charleston	Folly Beach	Isle of Palms
Avg ADR	$312	$340 (summer peak)	$480+ (beachfront)
Occupancy	68%	70%+	65%
RevPAR	$212	Strong	Premium

Peak demand runs March-June (wedding season, Charleston Wine + Food, spring break) and September-November (cooler weather, Spoleto USA echoes, fall events). July-August is hot and humid; ADR softens but occupancy holds.

Submarkets that matter

Cannonborough-Elliotborough (limited STR overlay) — clean legal path for non-owner-occupied 4-bed STRs. Permit premium baked into pricing.
Old & Historic District — owner-occupied / homestay only; not an investor market.
Folly Beach — separate jurisdiction, permissive STR, summer-heavy demand.
Isle of Palms / Sullivan’s Island — premium beachfront, restrictive but workable for the right property.
West Ashley / James Island — value entry; lower ADR, more permissive operating rules.

The 3 mistakes buyers make here

Buying outside an overlay district expecting to operate non-owner-occupied. The peninsula’s residential zones do not permit it. Verify the parcel sits inside a Limited STR overlay before offer — not from the listing agent, from the city’s GIS map.
Underpaying the permit premium and getting outbid, or overpaying it and killing the return. Existing permits in Cannonborough-Elliotborough trade at $50-150K+ premiums. Underwrite the premium against the actual cash flow it secures.
Treating peninsula and beach communities as one market. Demand curve, ADR seasonality, and regulation all differ. Folly Beach is a summer-beach market; the peninsula is a year-round events-and-tourism market.

What to do next

Run a Market Score on the specific overlay district or beach community.
Use the Comp Analyzer to validate ADR within the same district.
Permit-premium pricing inflates the basis; stress-test with the DSCR Loan Calculator.
Use the Year 1 Cash Needs Calculator — historic-district renovations and Charleston-aesthetic furnishings run higher than the national norm.
Read Reading an STR Ordinance Before You Buy.

Not investment advice. Verify all regulatory and zoning information with local authorities and licensed professionals before committing capital.