Renting on Sullivan's Island? Here's What You Need to Know Before You Sign

Sullivan's Island Rental Market Overview

Sullivan's Island is an incorporated town on a barrier island in Charleston County, at the mouth of Charleston Harbor across from Fort Sumter, roughly 10 miles from downtown Charleston. It covers 3.44 square miles total -- 2.50 square miles of land and 0.94 square miles of water -- governed as a mayor-council town, with real public streets rather than a private, gated entry system like neighboring Kiawah Island or Seabrook Island. The island is home to Fort Moultrie, a National Park Service unit within the Fort Sumter and Fort Moultrie National Historical Park, decommissioned by the Army in 1947 and transferred to the NPS in 1960; Town Hall (2050 Middle St) and Fort Moultrie were both independently confirmed inside Sullivan's Island's incorporated limits using the Census Bureau's jurisdiction geocoder. The island's Census-reported population held roughly flat for two decades -- 1,911 in 2000, dipping to 1,791 in 2010 -- before growing 5.6% to 1,891 by 2020. The Census Bureau's 2024 American Community Survey estimate puts median household income above $200,000, median home value above $1,000,000, and median gross rent at $2,571 a month -- but no purpose-built apartment community exists on the island; what rental market exists here is small, owner-by-owner, and shaped directly by a 2001 town ordinance banning short-term vacation rentals.

Common Lease Terms on Sullivan's Island

No apartment community or leasing office publishes a standard lease for Sullivan's Island, so what follows reflects the regional practice of the brokerage most visibly serving the island rather than an island-specific standard.

• Island Realty, a Charleston-area brokerage that manages more than 300 long-term rental properties across Mount Pleasant, Isle of Palms, Sullivan's Island, and downtown Charleston, lists Sullivan's Island among the areas it serves for annual, unfurnished-leaning rentals -- but as of this guide's September 2026 research, the two current long-term listings published on its own site both resolve, per the Census Bureau's geocoder, to Isle of Palms addresses rather than Sullivan's Island itself
• Island Realty's stated regional process -- application, credit check, owner approval, a signed lease, and a security deposit equal to one month's rent -- describes how its long-term division generally operates across its Charleston-area service area, not a confirmed Sullivan's-Island-specific term
• The town's 2001 ban on short-term vacation rentals (payment for temporary lodging) means any genuine listing here is more likely to be a real annual lease than on a market like Folly Beach's, where the identifiable long-term inventory runs through the same agencies that also handle short-term bookings

Local Tenant Protections

South Carolina law provides the baseline for tenant rights, but Sullivan's Island may have additional local ordinances that affect your lease.

• No Sullivan's Island ordinance identified for this guide adds tenant-facing protections -- habitability, notice periods, deposit handling -- beyond South Carolina's statewide baseline for a standard annual lease
• The town's most consequential rental-related ordinance is its 2001 ban on short-term vacation rentals, enforced by the zoning administrator and Board of Zoning Appeals with fines reported up to $500 a day for violations; it is a land-use rule aimed at preserving residential character, not an expansion of tenant rights, but it does structurally favor genuine long-term leasing over the short-term conversion seen on some neighboring islands
• In February 2026, the South Carolina Court of Appeals ruled 2-1, in an unpublished and non-binding decision, that fractional-ownership arrangements -- up to eight deeded co-owners holding a property through an LLC, with professional management and occupant turnover every one to two weeks -- do not violate the town's rental ban, since only the owners and their guests use the property and no one pays to stay there; this is a live, unsettled area of the town's own ordinance, not a confirmed tenant protection
• Town Hall, at 2050 Middle St, and Fort Moultrie, a National Park Service unit on Middle Street, were both independently confirmed inside Sullivan's Island's incorporated limits using the Census Bureau's geocoder
• No local rent control; South Carolina Code §27-39-60 expressly bars any county or municipality from regulating rent on privately owned residential or commercial property

For full South Carolina statewide tenant rights, see our South Carolina tenant rights guide.

Mandatory Fees and Costs for Sullivan's Island Long-Term Rentals

Because no confirmed on-island listing exists for a standard annual lease, no island-specific fee schedule could be verified for this guide as of September 2026.

• Island Realty's stated regional practice for its long-term division -- a security deposit equal to one month's rent, plus a monthly pet fee where pets are approved -- describes how the brokerage generally operates across its Charleston-area territory rather than a confirmed Sullivan's-Island-specific fee
• South Carolina sets no statutory cap on security deposits, application fees, or pet fees for a standard lease -- whatever a specific rental agreement states is what governs
• The town's short-term-rental business-license and enforcement structure applies to owners operating grandfathered vacation-rental units or the newer fractional-ownership arrangements, not to a tenant signing a standard annual lease -- a distinction worth keeping straight given how much of the island's rental-adjacent activity is short-term in nature

A market with no confirmed on-island long-term listing, even from the region's largest long-term-rental brokerage, doesn't have a comparable-fee benchmark the way a standard apartment complex would -- confirming any deposit amount, fee, or lease length directly with the property owner in writing matters more here than in a market with published leasing-office rates.

Sullivan's Island's Rental-Ban Market: Scarce, But Not the Same "No Market" Story as Kiawah or Seabrook

Sullivan's Island is a genuinely different case from the other Charleston-area barrier islands this guide has covered. Kiawah Island and Seabrook Island are private, gated resort communities with no meaningful long-term rental market at all -- their housing stock is overwhelmingly owner-occupied second homes and short-term vacation property, and neither publishes an apartment-style rent figure of any kind. Folly Beach sits at the opposite extreme: its short-term-rental licenses quadrupled from 329 in 2015 to 1,196 by 2022, consuming close to half its housing stock before a citywide cap took effect, and its population fell 20.6% over the same 2010-2020 decade. Sullivan's Island took a third path: a 2001 town ordinance banned short-term vacation rentals outright, years before Folly Beach's cap or Kiawah's licensing system existed, leaving the island's housing stock structurally oriented toward ownership and genuine long-term occupancy rather than either short-term conversion or resort-style vacancy. That's consistent with the island's modest but real population growth (1,791 to 1,891, 2010-2020) at a time when Folly Beach was shrinking.

The ban hasn't produced an abundant or affordable long-term market, though -- it has produced a scarce and expensive one. The 2024 Census estimate of $2,571 median gross rent is among the highest this guide has found in South Carolina, consistent with median home values above $1,000,000 and a median household income above $200,000. And the ban's own 2026 court test shows it isn't fully settled: the February 2026 Court of Appeals ruling on fractional ownership found that splitting a property into up to eight deeded co-ownership shares, professionally managed with occupant turnover every one to two weeks, doesn't violate the no-rental ordinance, since the arrangement technically involves owners rather than paying renters. That ruling is unpublished and non-binding, and it's aimed at ownership structures, not standard leasing -- but it signals that the boundary between "genuine long-term occupancy" and "short-term use by another name" is actively being tested on the very islands this ordinance was built to protect.

For a renter comparing a Sullivan's Island quote against a typical apartment market, there's no real comparison point available on the island itself -- Mount Pleasant, Isle of Palms, and downtown Charleston carry far more conventional long-term rental supply, and Island Realty's own long-term division, which lists Sullivan's Island as a service area, had no confirmed on-island listing at the time of this guide's research.

Common Issues Renters Face on Sullivan's Island

These are the most frequent lease-related considerations this guide's research turned up for Sullivan's Island:

• Confirming a listing is actually a standard annual lease rather than a grandfathered vacation-rental unit or one of the newer fractional-ownership arrangements the February 2026 court ruling opened up, given how much of the island's rental-adjacent activity is short-term or ownership-structured rather than a conventional tenancy
• Extremely thin long-term inventory -- even Island Realty, the region's largest long-term-rental brokerage and one that names Sullivan's Island as a service area, had no confirmed on-island listing as of this guide's research
• Pricing at a real premium: the 2024 Census estimate of $2,571 median gross rent is among the highest figures this guide has found anywhere in South Carolina
• No corporate leasing office to standardize terms, so deposit amount, pet policy, furnished-versus-unfurnished status, and lease length are set by whichever individual owner is renting a given property

Negotiating Your Lease on Sullivan's Island

South Carolina is landlord-favorable with minimal statutory protections, and Sullivan's Island's thin, owner-by-owner long-term supply narrows a renter's comparison shopping further -- confirming specifics in writing carries more weight here than at a corporate apartment community with a standardized lease.

• Confirming the exact lease length and start/end dates in writing is reasonable, since there's no leasing office standardizing terms and the visible inventory is set property by property
• Requesting a written security deposit amount and any pet fee before applying is worth doing, since no island-specific fee schedule is published anywhere this guide could locate
• Commonly negotiated: furnished-versus-unfurnished status and pet policy, given how much of the region's long-term inventory (per Island Realty's own stated practice) skews toward unfurnished homes with pets allowed case by case
• Comparing a quoted Sullivan's Island figure against nearby Mount Pleasant, Isle of Palms, or downtown Charleston rentals -- submarkets with more conventional long-term supply -- can help gauge whether a specific quote is reasonable for the region