Buying Guide · Sullivan's Island, SC

Buying a Second Home on Sullivan's Island, SC

A second home on Sullivan's Island is a lifestyle purchase first and an investment second — the island's rental restrictions mean this isn't the play for income-producing beach real estate, but it's one of the strongest long-term holds in the Charleston market.

Set Expectations on Rental Income Correctly from the Start

Sullivan's Island maintains a 30-day minimum rental restriction in most residential zones, which effectively rules out short-term or vacation rental income — a real difference from Isle of Palms just across the connector. If you're comparing the two islands purely as an income-producing second home, that distinction should drive your decision. If your plan is genuine family use with the option of a longer-term lease during months you're not there, Sullivan's Island works well; if you're underwriting nightly rental income, it does not, and you should confirm the town's current rules directly before assuming otherwise.

Why It's Still One of the Strongest Long-Term Holds

Limited inventory, strict zoning that keeps the island from ever significantly increasing density, and consistent demand from buyers who specifically want this island rather than a substitute have made Sullivan's Island appreciation durable over time. What you give up in rental income potential, you largely make up in scarcity value and long-term price stability.

Property Management for a Home You Visit Part-Time

A second home sitting vacant between visits still needs real care — a local property manager or trusted contact for check-ins, a maintenance schedule for HVAC and irrigation, and a hurricane-season preparation protocol. Coastal humidity and storm exposure aren't forgiving of neglect, so build ongoing upkeep into your budget as a real cost of ownership.

Financing and Tax Considerations

Second-home financing carries different underwriting standards than a primary residence, flood insurance is a real and necessary cost given the island's flood zone designations, and South Carolina's non-owner-occupied property tax assessment ratio applies unless the home is your primary residence. Work through all three with your lender and a South Carolina tax professional before you're under contract.

Considering a second home on Sullivan's Island and want an honest read on value versus a rental-income play elsewhere? Contact Chris Eller directly.