In late 2022, yard signs started appearing along Ion Avenue on Sullivan's Island. They read "Stop Timeshares on Sullivan's," and they pointed at one address: 3115 Ion Avenue, a home divided into one-eighth ownership shares and marketed through a company called Pacaso. The neighbor who organized the campaign, Tim Emrich, called the arrangement a scheme to convert a home for a family into a timeshare. By February 2023, the town's Board of Zoning Appeals agreed with him, voting 7-0 that the setup violated Sullivan's Island's ban on rentals under 30 days, a rule that has held since 2002. A Circuit Court later affirmed that decision. For a while, the matter looked settled.
Then, on February 18, 2026, three years after that unanimous local vote, the South Carolina Court of Appeals reversed it. The panel split 2-1. And the reasoning wasn't about vacation rentals at all. It turned on a narrower question that matters a great deal more to anyone shopping the island as a second home: whether a person who owns one-eighth of a house is a renter or an owner. The court said owner. Without a landlord-tenant relationship and without payment for temporary lodging, the judges found, the town's own ordinance simply doesn't reach the arrangement, however brief an individual owner's stay might be.
That distinction is the whole story for a buyer weighing Sullivan's Island right now. Not whether the island allows short-term rentals. It doesn't. The question is what else counts as one, and a case that took nearly four years to resolve just answered that more narrowly than either side expected.
What the Ban Actually Covers, and Why the Grandfather Clause Is the Real Asset
Sullivan's Island's vacation rental ordinance has prohibited stays under 30 days since 2002, with an exception carved out for the handful of properties already operating as rentals before the rule took effect. Those legacy licenses are the exception that makes the rule interesting. They're limited in number, the town hasn't been issuing new ones, and in many cases they don't transfer automatically to a new owner when a property sells.
That scarcity shows up in the performance numbers for the licenses that do still operate. As of June 2026, roughly 46 active short-term rental listings exist on the island. Average revenue per listing over the prior twelve months rose 18 percent, even as the number of active listings fell 11.5 percent over the same period. Average daily rate climbed 9.5 percent, to $862 a booked night. Fewer licenses, chasing more nights, at higher rates, is what a fixed and shrinking supply looks like in a market where demand hasn't cooled at all.
For a buyer, the practical takeaway is that the license is the asset, not the house around it. A listing that specifically advertises a transferable grandfathered rental license is offering something the town stopped handing out over two decades ago. That is worth confirming in writing, from both the seller and the town, before it factors into anyone's math.
The Case That Tested Whether Ownership Itself Could Be the Workaround
The timeline matters here because it shows how long a settled-looking local decision can stay unsettled. The zoning administrator issued a violation notice to the property's owner, 2 SC Lighthouse LLC, in October 2022. The Board of Zoning Appeals upheld that violation 7-0 in February 2023.
"It was two hours of sort of spirited back and forth, a lot of ground was covered. And in the end, you know, it was a seven-to-nothing decision against Pacaso."
That's how Emrich described the local vote at the time. The company and the property owner then took the case to Charleston County Circuit Court, which sided with the town. They appealed again. On February 18, 2026, the South Carolina Court of Appeals reversed the circuit court in a 2-1 decision, in the case captioned Pacaso, Inc. & 2 SC Lighthouse, LLC v. Town of Sullivan's Island. The majority's reasoning centered on the fact that the people staying in the home hold legal ownership shares rather than a rental agreement, and that interpreting a zoning ordinance is a legal question, not a factual one entitled to deference toward the town's original enforcement decision.
What the Ruling Does Not Settle
A 2-1 vote on an unpublished opinion is not the same as a settled rule for every future case. It resolves this dispute, at this address, under this ordinance's specific language. It does not mean every fractional-ownership structure would survive the same scrutiny elsewhere, and it doesn't foreclose further appeal. It also has nothing to say about HOA covenants or private deed restrictions, which are a separate layer from town zoning and can be more restrictive than the ordinance itself.
For buyers actually comparing barrier islands, the more useful exercise is looking at where rental flexibility exists without needing a court to define it.
| Island | The rental rule | What it means for a buyer |
|---|---|---|
| Sullivan's Island | Rentals under 30 days banned since 2002; a small number of grandfathered licenses remain, and many don't transfer to a new owner | Assume no rental income unless a specific listing carries a confirmed transferable license |
| Isle of Palms | Short-term rentals long permitted, especially around Wild Dunes, under annual permitting | Rental income can be a realistic part of the math, though resort and HOA rules still apply |
| Folly Beach | Vacation rentals capped at roughly 800 permits across owner-occupied, investment, medical-hardship, and provisional categories | Rental potential exists but is permit-gated, so ask whether a permit transfers with the sale |
The Number That Undercuts the "No Rentals Means Safer Values" Story
The assumption behind Sullivan's Island's ban has always been that keeping tourism out protects the character of the island and, by extension, its property values. The 2025 numbers complicate that story more than they confirm it.
Sullivan's Island's median home sale price finished 2025 at $4.2 million, down 15.7 percent from 2024, according to Charleston Trident Association of Realtors data reported by the Post and Courier. Closed sales fell 20.5 percent over the same period. In the same year, Isle of Palms, which permits short-term rentals throughout much of the island, saw its median sale price climb 32.5 percent to $2.66 million, with 132 homes closing, a 2.3 percent increase in volume.
That's not two islands drifting apart by chance. It's the rental-restricted island posting a sharper decline than its rental-friendly neighbor in the same calendar year. Listings on Sullivan's Island have also been sitting for around 110 days on average before going under contract, longer than many buyers expect for a market this exclusive, with homes typically closing a few percentage points under asking. None of this means the ban failed at its actual goal of preserving neighborhood character. It means the character it preserves and the price appreciation buyers sometimes assume comes with that character are not the same guarantee.
Small annual sales counts on an island this size also mean any single year's median can swing hard on just a few closings, which is worth remembering before treating one year's number as a trend.
The Carrying-Cost Math Behind the Purchase
South Carolina taxes real estate at one of two assessment ratios: 4 percent for a property that qualifies as the owner's legal primary residence, and 6 percent for everything else, including second homes. That distinction, laid out in state tax code, means a non-primary purchase carries a materially higher taxable value at the same fair market price. On a home assessed at $4.2 million, the 4 percent primary classification produces $168,000 in taxable assessed value. The 6 percent non-primary classification produces $252,000, fifty percent more, before any local millage rate is even applied. Non-primary properties also don't qualify for South Carolina's school operating millage exemption or homestead exemption, both of which apply only to a legal primary residence.
For most buyers looking at Sullivan's Island in this price range, a primary-residence classification isn't realistic. Building the 6 percent rate into carrying costs from the start, and confirming current classification status with the Charleston County Assessor before writing an offer, avoids an unwelcome surprise on the first tax bill.
What the Signs on Ion Avenue Were Really About
The yard signs were never only about one house. They were about who gets to decide what a home on Sullivan's Island is for, on an island with room for roughly two thousand full-time residents and almost no room left to build. The Court of Appeals answered that question narrower than either side expected. Not with a ruling on vacation rentals, but with a ruling on what ownership means when it's divided eight ways.
For a buyer treating Sullivan's Island as a second home, that changes which questions are worth asking before an offer goes in. Not just what a comparable home sold for last year, but who is legally allowed to stay in it, under what theory, and whether that theory holds up through the next appeal.
Could I set up a similar fractional-ownership arrangement on Sullivan's Island right now? One appellate panel found in favor of one specific arrangement, decided 2-1, in an unpublished opinion that carries limited weight as precedent for future cases. Anyone considering a similar structure should have counsel review the current status of the litigation and the town's ordinance directly before assuming the door is open.
If a home I'm buying has a grandfathered rental license, does it transfer to me automatically? Not necessarily. Whether a license transfers depends on how it was originally grandfathered and the property's specific history, so written confirmation from both the seller and the town is standard due diligence here, not an extra step.
If I later make the home my primary residence, does my tax rate change? You would need to apply for and be approved for the 4 percent legal residence classification through Charleston County. Approval typically applies going forward from the date you qualify, not retroactively to your closing date.
If you're weighing Sullivan's Island against Isle of Palms or Folly Beach for a second home, the ordinance language and the court record matter as much as the view does. Weichert, Realtors - Lifestyle can walk you through what's currently confirmed, what's still being litigated, and what a realistic ownership-cost picture looks like before you write an offer. Get My Home Valuation.
