Folly Beach vs Isle of Palms: Floodplain Town With a Rental Cap or Elevation-Rule Island With a Beach Budget
Folly Beach and Isle of Palms are both six-mile barrier islands in Charleston County, one south of Charleston and one to the east, and they share the same county tax tables, the same county hurricane guidance and the same downtown Charleston hospital hub. That similarity is why the choice is easy to get wrong. The differences that matter to a retiree sit in each city's own rules: how it handles flood elevation, who pays for beach protection, and how tightly it controls short-term rental of a house you might want to rent out or sell.
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Folly Beach vs Isle of Palms: the short answer
Folly Beach and Isle of Palms are both six-mile barrier islands in Charleston County, one south of Charleston and one to the east, and they share the same county tax tables, the same county hurricane guidance and the same downtown Charleston hospital hub. That similarity is why the choice is easy to get wrong. The differences that matter to a retiree sit in each city's own rules: how it handles flood elevation, who pays for beach protection, and how tightly it controls short-term rental of a house you might want to rent out or sell.
Folly Beach describes its entire city as lying inside a flood hazard area, holds a Community Rating System Class 3 flood-insurance discount of 35 percent and runs a licensing system that stops new investor short-term rental licenses. Isle of Palms has adopted a local elevation rule that exceeds the federal minimum, runs a city-managed 2026 beach renourishment project with a published cost split with the Wild Dunes Community Association, and requires a license for any rental of a residential unit.
The figures below come from the two cities' own pages, Charleston County, the South Carolina Department of Revenue and the state code, and they reset with each budget or tax year. Confirm any parcel with the County Auditor and the city building department before an offer. State income tax is covered in the South Carolina retirement taxes guide, and the coverage mechanics behind both places are in the coastal hurricane and flood insurance guide.
Full profiles: Folly Beach (South Carolina) and Isle of Palms (South Carolina).
Which one fits you
Choose Folly Beach if
- You want a flood-insurance discount you can verify: the City says it was upgraded to Community Rating System Class 3 in 2025 and that policies are eligible for a 35 percent discount.
- You want a lower municipal millage line: the South Carolina Association of Counties' 2025 compilation lists the City of Folly Beach at 0.0325 against 0.0201 for Isle of Palms, so check the difference in our illustration below before assuming either is cheaper.
- You are comfortable that the entire city is in a flood hazard area and want to meet that directly with elevation, an elevation certificate and permits for re-roofing, siding, additions and alterations.
- You plan to live in the house, not rent it short-term, and you accept that new investor short-term rental licenses are limited to heirs and medical hardships.
Choose Isle of Palms if
- You want the stricter local elevation standard: the City requires the lowest floor of new or substantially improved structures to be at least the base flood elevation plus one foot or 13 feet above mean sea level, whichever is higher.
- You want a documented, funded beach-management program and accept that part of its cost is carried by the City and by Wild Dunes Community Association members.
- You want a resort amenity base next door: the Wild Dunes resort at the northeast end has a Harbor Course and a Links Course, tennis, a marina and bike paths on most roads.
- You are comfortable with a rental licensing regime that caps overnight occupancy and requires a 24-hour contact who can be on site within one hour.
Folly Beach and Isle of Palms side by side
| Dimension | Folly Beach | Isle of Palms |
|---|---|---|
| Flood zone exposure and the insurance discount | The City of Folly Beach states that the entire city is in a flood hazard area, that flooding is a major hazard and that the greatest threat is storm surge from an Atlantic hurricane. Its Flood Insurance Rates page says the City participates in the Community Rating System, was upgraded to Class 3 in 2025 and that policies are eligible for a 35 percent discount. The City says relocation is the only sure escape from floodwater and is unavailable because the whole city is in the floodplain, so elevation is the practical protection. | Isle of Palms participates in the National Flood Insurance Program and says its Flood Insurance Rate Maps became effective on January 29, 2021. It states that its extra foot of local elevation improves its Community Rating System score and provides a flood-insurance discount for owners. Projects in VE zones need architect- or engineer-stamped drawings and a V-zone certification. Ask an agent for a quote using the elevation certificate for the exact address. |
| Elevation standard for new work | Folly requires walls below the base flood elevation to be designed by a South Carolina engineer or architect to break away, allows no structural fill in V zones and prohibits obstructions below base flood elevation unless an engineer certifies they will not cause wave run-up or deflection. The Building Department keeps elevation certificates for new construction and substantially improved structures and may have one on file for structures built after 1990. | Isle of Palms requires the lowest floor of newly constructed or substantially improved structures to be at least base flood elevation plus one foot or 13 feet above mean sea level, whichever is higher, with materials below that level rated flood-resistant class 4 or 5. After the 2021 maps moved the reference datum from NGVD 1929 to NAVD 1988, which the City says is approximately one foot lower, Council set a local minimum finished floor of at least 14 feet above mean sea level (NGVD 1929) for new construction. |
| Renovating an older house | Under the federal program's rule as the City applies it, work that equals or exceeds 50 percent of a structure's assessed or appraised value triggers new-construction requirements, and Folly counts building permit values over the past ten years in that calculation. That ten-year look-back means several modest projects can add up. Permits are required for any permanent improvement. | Isle of Palms applies the same 50 percent threshold, measured against the structure excluding the lot, and requires a substantial-improvement review before a permit for repairs, renovations or additions on a structure below the minimum base flood elevation. The City's own example is a 100,000 dollar structure that allows 50,000 dollars of improvements. It publishes affidavits for substantial damage and substantial improvement and refers owners to a Charleston County flood-zone viewer and a flood hotline. |
| Who pays for the beach | Folly's city pages center on flood rules, permits and licensing. A buyer should ask the City which beach-protection and drainage costs, if any, are expected to fall on owners, and should review the sustainability pages the City publishes, which include living shorelines, a SeaRise Project and a river tide gauge. | The City's 2026 offshore renourishment project is budgeted at 22,389,508 dollars in total, with the City covering 64 percent and the Wild Dunes Community Association 36 percent. On the north end (reaches 1 and 2) the City says it will contribute 47 percent and the association 53 percent, with the split determined from reported gross income for short-term rental and business licenses for the 2025 license year. On the south end (reach 3) the City covers the full cost, offset by 1.5 million dollars received of 5.3 million dollars requested in state funding. |
| Property tax millage and a worked illustration | The South Carolina Association of Counties' 2025 compilation lists the City of Folly Beach at 0.0325, Charleston County's base millage at 0.0506, and Charleston County School Board levies of 0.1425 operating and 0.0230 for bond issues. Illustration (our arithmetic, not a tax bill): a 600,000 dollar owner-occupied home taxed at 4 percent has an assessed value of 24,000 dollars, and county base 0.0506 plus school bond 0.0230 plus the City's 0.0325 totals 0.1061, or about 2,546.40 dollars before fees and special districts. | The same compilation lists the City of Isle of Palms at 0.0201 and the same county and school levies, and shows the East Cooper Fire District and other special districts as separate levies. Illustration (our arithmetic, not a tax bill): on the same 600,000 dollar home, 0.0506 plus 0.0230 plus 0.0201 totals 0.0937, or about 2,248.80 dollars, which is 297.60 dollars a year less than the Folly figure before any special district charge. Ask the County Auditor which districts apply to the parcel. |
| Relief for owners over 65 and the reassessment cap | The South Carolina Department of Revenue says the homestead exemption completely exempts the first 50,000 dollars of fair market value of a legal residence for homeowners over 65, totally and permanently disabled or legally blind, and that for tax year 2026 only the General Assembly temporarily raised that amount to 75,000 dollars. Apply through the county auditor. State law limits the increase in fair market value from a periodic countywide appraisal to fifteen percent within a five-year period, and the limit does not apply to additions, improvements or an assessable transfer. | The same Department of Revenue rule and the same county auditor apply on Isle of Palms, so the exemption does not separate the two islands. The difference is in classification: the City says every owner who rents a residential unit for any length of time must hold an Isle of Palms rental business license and file a rental revenue affidavit, and a purchase can reset value because the fifteen percent limit does not cover a property that had an assessable transfer of interest. |
| Short-term rental rules | Folly issues long-term rental licenses for stays of 30 or more days, owner-occupied short-term licenses for properties carrying the 4 percent rate and investor short-term licenses for properties carrying the 6 percent rate. Only owners with a valid prior-year license can renew an investor license, and new investor licenses are available to heirs and for medical hardships. The City warns that under state law an owner-occupied property rented for more than 72 days in a calendar year may lose the 4 percent rate. A provisional license of up to 90 days is available to the purchaser of an existing licensed rental. | Isle of Palms licenses every residential rental, caps overnight occupancy at typically two people per bedroom plus two to a maximum of 12, and limits total people at the residence to twice the overnight occupancy or 40, whichever is less. Single-family homes must be rented whole and owners must provide a 24-hour contact able to be on site within one hour. Violations can be a misdemeanor with fines up to 500 dollars, and owners may buy up to four portable parking permits a year at 15 dollars each. |
| Healthcare and daily life on the island | Neither island has a hospital. MUSC Health says its University Medical Center in downtown Charleston includes four hospitals, an NCI-designated cancer center and a Level I Trauma Center, and Charleston County tells residents to be ready to drive 20 to 50 miles inland in a hurricane. Folly's daily life is built around the beach, surfing, a bark park, community center gardens, Folly River Park and island cleanup events, with visitors a significant part of the town's year. | Isle of Palms residents face the same drive to the MUSC campus and the same county evacuation guidance, so test the route from the specific address in summer traffic. The City's IOPThrives community plan, drawn from an island-wide survey of more than 750 respondents, names seasonal parking and traffic, environmental leadership, safety and short-term rentals as its focus areas, and the island offers two golf courses, a marina, a public dock and a turtle team that monitors nests. See the healthcare access guide for checking Medicare networks. |
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.
- About Folly Beach — City of Folly Beach (accessed 2026-09-30)
- Flood Information — City of Folly Beach (accessed 2026-09-30)
- Flood Insurance Rates — City of Folly Beach (accessed 2026-09-30)
- Short-term Rentals — City of Folly Beach (accessed 2026-09-30)
- Hurricane Information — Charleston County Emergency Management (accessed 2026-09-30)
- Code of Laws Title 12, Chapter 37 (Property Tax) — South Carolina Legislature (accessed 2026-09-30)
- Code of Laws Title 12, Chapter 43 (Assessment) — South Carolina Legislature (accessed 2026-09-30)
- Property Tax Exemptions (Exempt Property) — South Carolina Department of Revenue (accessed 2026-09-30)
- 2025 South Carolina Property Tax Rates by County (revised February 2026) — South Carolina Association of Counties (accessed 2026-09-30)
- MUSC Health medical centers — MUSC Health (accessed 2026-09-30)
- About the Island — City of Isle of Palms (accessed 2026-09-30)
- Flood Damage Prevention — City of Isle of Palms (accessed 2026-09-30)
- Beach Renourishment - Construction Information — City of Isle of Palms (accessed 2026-09-30)
- Short-term Rental License — City of Isle of Palms (accessed 2026-09-30)
- IOPThrives! Community Enrichment Plan — City of Isle of Palms (accessed 2026-09-30)