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Seabrook Island vs Kiawah Island: Residential Gated Town or Resort-and-Residential Island

Seabrook Island and Kiawah Island are neighboring gated barrier-island towns south of Charleston that share a county, a single evacuation corridor and a road to the same hospitals. A buyer comparing them is not choosing between tax regimes, because both are taxed by Charleston County with no town property tax, but between two different island models: Seabrook Island is a smaller residential town that owns its water and sewer utility and has no hotels within its limits, while Kiawah Island's town describes a resort-and-residential island with 10 miles of beach, a golf resort and tourism that plays a very important role in its economy.

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Seabrook Island vs Kiawah Island: the short answer

Seabrook Island and Kiawah Island are neighboring gated barrier-island towns south of Charleston that share a county, a single evacuation corridor and a road to the same hospitals. A buyer comparing them is not choosing between tax regimes, because both are taxed by Charleston County with no town property tax, but between two different island models: Seabrook Island is a smaller residential town that owns its water and sewer utility and has no hotels within its limits, while Kiawah Island's town describes a resort-and-residential island with 10 miles of beach, a golf resort and tourism that plays a very important role in its economy.

That difference shows up in how each town runs utilities, what its public documents say about flooding and evacuation, how the beach is shared and what healthcare is on the island itself. Neither town is an age-restricted market. Use the dimensions below as a checklist, and confirm each parcel's tax districts with the Charleston County Auditor and each association's budget and governing documents before an offer. State rules for retirees are in the South Carolina retirement taxes guide.

Full profiles: Seabrook Island (South Carolina) and Kiawah Island (South Carolina).

Which one fits you

Choose Seabrook Island if

  • You want a quieter, mostly residential island without hotels: the town's visitor page says there are no hotels within its limits, with dining at the Seabrook Island Club behind the gate and public restaurants at Bohicket Marina & Market.
  • You want the island's water and sewer system to be a town-owned utility: the town acquired it after a 1995 referendum and an elected Seabrook Island Utility Commission sets the rates.
  • You want a primary care and cardiology clinic on or beside the island: MUSC Health lists primary care and cardiology at the Kiawah Partners Pavilion at 1857 Seabrook Island Road.
  • You are comfortable with a single road on and off the island and with a town whose FY 2026 revenue comes from business licenses and visitor-related taxes rather than a property-tax line.

Choose Kiawah Island if

  • You want a long beach and a resort setting: the town describes Kiawah as having 10 miles of beach divided into East Beach and West Beach, with Beachwalker County Park as the only public beach access.
  • You want a published planning record on flood and sea level rise: the town's Environmental Committee report uses NOAA's Intermediate High scenario of about 1.5 to 2.5 feet in roughly 50 years and recommends freeboard and floodproofing options to owners.
  • You are comfortable with a resort-and-residential island governed by both a town and the Kiawah Island Community Association, with every building or fill project reviewed by the Town, the association and the Architectural Review Board.
  • You can accept that no hospital or clinic is listed on the island itself and that medical, fire, rescue and police assistance stop once an evacuation is underway.

Seabrook Island and Kiawah Island side by side

DimensionSeabrook IslandKiawah Island
Property taxCharleston County sets the tax on the island. The South Carolina Association of Counties' 2025 report lists county base millage of 0.0506, school operating millage of 0.1425, bond millage of 0.0230 and a single-unit residence solid waste fee of $150.00, and its list of municipal millages for the county does not include Seabrook Island. The town's FY 2026 budget includes no property-tax line, but a parcel can sit in a county special district such as the St. Johns Fire District and bond at 0.0300 or the East Cooper Fire District at 0.0148.The Town of Kiawah Island's budget page states plainly that the town does not collect property taxes and that taxes are paid directly to Charleston County. The same county rates apply, and the St. Johns Fire District and bond millage of 0.0300 is listed on the county report; confirm which parcels the district covers with the county auditor. As our arithmetic, because both towns have no town levy, the county rate on a given assessed value is the same on either island, so the tax difference comes from assessment, districts and association charges.
Owner-occupied versus second homesThe report says owner-occupied residential property assessed at 4 percent is exempt from school operating millage except bond mills, which matters on a barrier island where second homes and rentals are assessed at a higher rate. The Department of Revenue says the Homestead Exemption fully exempts the first $50,000 of fair market value of a legal residence for owners over 65, totally and permanently disabled or legally blind, and was temporarily raised to $75,000 for tax year 2026 only.The same report states that owner-occupied residential property is assessed at 4.0 percent and non-owner-occupied at 6.0 percent, and the town's pages note a short-term rental license process. The same homestead rules apply. A retiree using the island as a primary residence will benefit from the 4 percent treatment, while a buyer counting on rental income should price the 6 percent assessment.
Utilities and who runs themThe town owns the island's water and sewer system, acquired from Heater of Seabrook, Inc. after a successful referendum in 1995. The Seabrook Island Utility Commission, elected by town residents to six-year terms, provides water and wastewater service and sets the rates, and also treats wastewater for areas outside the town including Cassique, Freshfields Village and Kiawah River Estates.The town's pages name Kiawah Island Utility for water and Berkeley Electric Cooperative for electricity, and the history page says that in 2013 Kiawah Partners, including Kiawah Island Utility and Freshfields Village, was sold to South Street Partners. The town does not publish association dues or home prices, so ask the Kiawah Island Community Association for its budget and governing documents.
Beach and recreationThe town's Comprehensive Beach Management Plan, first adopted in November 1992 and updated by ordinance on February 25, 2025, was prepared jointly with the property owners association, the Seabrook Island Club and the St. Christopher Camp and Conference Center. Bohicket Marina has slips and dry-dock storage and a charter office, and most properties are behind the property owners association's private security gate, which the town does not control.Kiawah has 10 miles of beach, with many private accesses behind the gate for owners, guests and renters. Beachwalker County Park on the west end at 8 Beachwalker Drive is the only public beach access, operated by the Charleston County Park and Recreation Commission with lifeguards, chair rentals and a snack bar. Kiawah Island Golf Resort, Freshfields Village, the Conservancy of the Sea Islands and Kiawah Arts anchor the events calendar.
Evacuation and re-entrySouth Carolina's 2026 evacuation plan puts Seabrook Island in Zone A. The town says the single road leaving the town, combined with traffic from Kiawah and Johns Island, makes early evacuation essential. Re-entry is phased: emergency responders and the island's principal organizations first, then recovery crews, and residents last, once essential infrastructure is restored. The town is switching from Code Red to Everbridge for alerts.The town says Kiawah is in Zone A, and evacuees take Road S-20 to US 17 and then south to SC 64 toward Walterboro. After an order, Kiawah Island Utility and Berkeley Electric may turn off services, and there will be no medical, fire, rescue or police assistance for anyone who stays. Re-entry begins with a damage assessment by the town and the association, and red, yellow and green placards mark structures as unsafe, restricted or okay to occupy. Returning can take hours, days or weeks.
Flood planning documentsCharleston County's Building Services Department keeps copies of flood elevation certificates for new construction and substantially improved structures on Seabrook Island, and the county's hurricane page explains the flood zone letters on the flood insurance rate maps. Ask an insurer to price a specific address before contract, because wind and flood premiums are a major carrying cost on the coast; the coastal hurricane and flood insurance guide explains wind, flood and wait periods.The town participates in the National Flood Insurance Program and the Community Rating System. Its Environmental Committee report, not adopted by Town Council at the time it was published, records early October 2015 rain of 16 to 20 inches over four days with about 42 percent of the island's land surface covered by water at some point, and notes an interconnected pond system that can accommodate a rainfall event equivalent to a 100-year flood. Elevation, drainage and the condition of the stormwater system are part of due diligence.
Healthcare on and off the islandMUSC Health lists MUSC Health Primary Care and MUSC Health Cardiology at the Kiawah Partners Pavilion, 1857 Seabrook Island Road, with weekday hours of 8:00 a.m. to 5:00 p.m., and primary care and pediatrics at 3351 Maybank Highway on Johns Island. The hub is MUSC Health University Medical Center in Charleston, home to a Level I Trauma Center, which the town's visitor page places approximately 20 miles, or 30 minutes' drive, away.The town's list of local agencies covers the sheriff, fire stations, utilities, the association, the beach patrol and emergency numbers, and names no hospital or clinic on the island. The hospitals a resident would reach are on the Charleston side of the harbor: MUSC Health says its Charleston campus is home to a Level I Trauma Center, with emergency care at 171 Ashley Avenue. Test the drive from a specific address; see the healthcare access guide.

Related guides

Sources and review date

Last reviewed . Facts on this page come from the sources below; where a rule or figure can change, check the linked source before relying on it.

  1. Town History — Town of Seabrook Island (accessed 2026-09-30)
  2. Introduction to Town Government — Town of Seabrook Island (accessed 2026-09-30)
  3. Hurricanes — Town of Seabrook Island (accessed 2026-09-30)
  4. Visitor Info — Town of Seabrook Island (accessed 2026-09-30)
  5. Utility Commission — Town of Seabrook Island (accessed 2026-09-30)
  6. Beach Management — Town of Seabrook Island (accessed 2026-09-30)
  7. FY 2026 Budget (Ordinance 2025-10) — Town of Seabrook Island (accessed 2026-09-30)
  8. Hurricane Information — Charleston County Emergency Management Department (accessed 2026-09-30)
  9. 2026 Annex C: Evacuation Zones and Clearance Times — South Carolina Emergency Management Division (accessed 2026-09-30)
  10. 2025 South Carolina Property Tax Rates by County (revised February 2026) — South Carolina Association of Counties (accessed 2026-09-30)
  11. Exempt Property — South Carolina Department of Revenue (accessed 2026-09-30)
  12. Climate and Hazards of South Carolina — South Carolina State Climatology Office (accessed 2026-09-30)
  13. Charleston Medical Center (University Medical Center) — MUSC Health (accessed 2026-09-30)
  14. Find a location near Johns Island, SC — MUSC Health (accessed 2026-09-30)
  15. History — Town of Kiawah Island (accessed 2026-09-30)
  16. Hurricane and Evacuation/Re-Entry Information — Town of Kiawah Island (accessed 2026-09-30)
  17. Flood Damage Prevention — Town of Kiawah Island (accessed 2026-09-30)
  18. Flood Mitigation and Sea Level Rise Adaptation — Town of Kiawah Island (accessed 2026-09-30)
  19. Beachwalker Public Beach Access — Town of Kiawah Island (accessed 2026-09-30)
  20. Budget and Revenue Sources — Town of Kiawah Island (accessed 2026-09-30)
  21. Important Local Agencies — Town of Kiawah Island (accessed 2026-09-30)
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