By Eric Berman, REALTOR® | The Eric Berman Team at Compass
TL;DR:
Charleston has become one of the South's most-cited destinations for Long Island sellers, with very low property taxes, generous retirement income exemptions, and a coastal culture that feels closer to a historic European city than the rest of the Southeast. The trade-offs are a high sales tax, hurricane exposure, and a market that has appreciated more than 40% since 2020. The Long Island sale is still what funds, sequences, and ultimately controls the move.
Why Charleston Reads Differently From Anywhere Else in the Series
Charleston is one of the more singular destinations in the outbound conversation. It is not a Sun Belt boomtown like Charlotte or Nashville. It is not a retirement community like The Villages. It is not a Florida coastal market with the insurance and density issues of Miami or West Palm Beach. Charleston is a historic city of about 160,000 people with a 800,000-person metro, sitting at the mouth of the Cooper and Ashley rivers, with architecture and culture older than most of New York and a cadence that explicitly prizes slow, hospitable living.
For Long Island sellers, three distinct demographics keep showing up in the Charleston conversation. The first is senior sellers — particularly those leaving the North Shore who want coastal living, walkability, and culture without Florida's density or political identity. The second is empty-nesters in their late fifties and sixties who want a smaller, more historic city than what's available in the Northeast at the same price point. The third is creative-class and remote-work sellers — writers, designers, consultants, retired finance executives consulting part-time — who want a city with a real food and arts culture but no daily commute.
The financial structure is favorable, though distinct from North Carolina's and Florida's. South Carolina has a graduated income tax with a top rate of 6.4% in 2026, which is below New York's combined state-and-city burden but higher than NC's flat 3.99%. Charleston County's effective property tax rate sits between 0.41% and 0.53% depending on the source — among the lowest of any destination covered in this series and well below Nassau County's 2%-plus. Median home prices in Charleston run around $385,000 to $450,000, with significant zip-code variation. The historic downtown (29401) has a median price near $864,000. Mount Pleasant, the affluent suburb across the Cooper River, runs higher. Daniel Island, Sullivan's Island, and Kiawah Island sit higher still.
The honest version: Charleston is materially cheaper than Long Island, and offers cultural assets few other Southern destinations can match. But it is no longer "cheap." Home values have appreciated over 40% since 2020, and the 2026 Charleston market is meaningfully tighter than the 2019 version.
The South Carolina Retirement Income Conversation
For senior Long Island sellers, this is where Charleston quietly outperforms several other Southern destinations.
South Carolina does not tax Social Security benefits at any age. Beyond that, SC offers one of the more generous retirement income deductions in the Southeast: residents 65 and older can deduct up to $10,000 of retirement income per person — and an additional $15,000 deduction stacks on top, for a combined deduction of up to $15,000 to $25,000 per person depending on filing status. Married couples filing jointly with both spouses over 65 can effectively shelter $30,000 to $50,000 in retirement income annually before SC's graduated income tax even applies.
For a Long Island senior couple drawing $150,000 to $200,000 in combined retirement income — pension, 401(k) RMDs, IRA distributions, Social Security — that exclusion structure produces meaningfully better tax treatment than North Carolina's flat 3.99% on all retirement income. It still doesn't match Florida's zero-tax structure, but it's closer to Florida than to NC. Pennsylvania's full exemption for residents 60+ remains the most generous, but Charleston's combined offering — coastal lifestyle, no estate tax, generous retirement deduction, historic culture — is a different package than what Pennsylvania offers.
For working-age sellers, the SC top income tax rate of 6.4% is the line item that matters most. That's better than New York's combined burden but worse than Tennessee, Texas, or Florida. For high earners, the gap between SC and a true zero-tax state can be tens of thousands of dollars annually. For senior sellers with mostly retirement income, SC closes most of that gap through the deductions structure.
This is a CPA-level decision that deserves real modeling before the Long Island home is listed.
The Charleston Market Is Geographically Tiered
The biggest mistake Long Island sellers make about Charleston is treating it as a single market. It isn't.
Downtown Charleston (29401, 29403, 29407) — the historic peninsula — is the high-end and most architecturally distinctive market. Median home prices in 29401 run near $864,000, with significant ranges above and below. Single-family homes are limited; the historic district favors row houses, carriage houses, and converted historic buildings. For a Long Island seller relocating from a brownstone-style historic property or from one of the older parts of Port Washington or Manhasset, this is the closest cultural match in the Charleston area, with the highest price point and the deepest cultural premium.
Mount Pleasant — across the Cooper River from downtown — is the primary affluent suburb. Larger lots, more conventional single-family architecture, top-rated public schools (district name only), and a tight-knit family-oriented community. Median home prices run around $600,000 to $800,000 depending on submarket (Old Village vs. Park West vs. Carolina Park). For most North Shore Nassau sellers, this is where the actual Charleston move tends to land.
Daniel Island — a planned community in the Cooper River — offers gated, suburban-feel living with strong schools and a country-club culture. Higher price points, similar to upper-middle Mount Pleasant.
The Islands — Sullivan's Island, Isle of Palms, Folly Beach, Kiawah Island, Seabrook Island — are barrier-island and resort-island markets. Significantly higher price points (often $1M+ for waterfront, $2M+ for Kiawah). For Long Island sellers relocating from a North Shore waterfront home looking for a similar lifestyle, these are the closest equivalents.
West Ashley, James Island, and Johns Island — the mainland suburbs south and west of downtown — offer more affordable price points and significant new-construction inventory. These work for younger sellers, working-class retirees, and buyers prioritizing cost over downtown access.
The further-out areas — Summerville, Goose Creek, Hanahan, Moncks Corner — sit further inland and produce significantly lower price points. These are growth corridors that attract buyers willing to drive 30-40 minutes for substantially lower housing costs.
A Long Island seller who tours Charleston for one weekend in one neighborhood is making a much narrower decision than they realize. Two visits, ideally covering both downtown and Mount Pleasant, is the minimum.
The Hurricane, Flooding, and Insurance Reality
Charleston sits at sea level in a hurricane corridor, and the climate reality deserves direct attention.
Hurricane Hugo (1989) caused catastrophic damage to the Charleston area. Hurricane Matthew (2016) and Hurricane Florence (2018) both produced significant storm-related flooding. Smaller tropical systems regularly affect the area each season. Beyond hurricanes, downtown Charleston experiences increasing tidal flooding even in clear weather — the city now sees more than 70 days per year of high-tide flooding, up from a handful per year three decades ago. The federally-funded Charleston Battery seawall project is the response, but the climate adjustment is real and continuing.
The insurance picture follows from the climate exposure. Premiums on coastal Charleston homes have risen sharply over the last five years, particularly for waterfront and barrier-island properties. Wind and flood are typically separate policies. Flood insurance through the federal NFIP program has hard coverage caps, and excess flood coverage on a high-value home is its own line item. Long Island sellers commonly experience a 50% to 150% increase in insurance premium versus what they paid on Long Island for comparable coverage. The real number depends heavily on the specific property and its flood-zone designation.
Sellers who run the numbers honestly often find that the lower property tax savings in Charleston are partially offset by higher insurance costs. The income tax savings still stand for working-age sellers; the retirement income savings still stand for senior sellers. But the insurance line needs to be in the model before any offer goes in, with a real quote on the specific target home.
Capital Gains, Cost Basis, and Estate Planning
A meaningful share of Long Island sellers heading to Charleston have owned the same home for fifteen, twenty, or thirty years. The financial conversation for that seller is fundamentally different from the one a five-year owner has.
The federal capital gains exclusion shelters $250,000 of gain for a single filer or $500,000 for a married couple filing jointly on a primary residence owned and lived in for two of the last five years. That works for most middle-market Long Island sellers. It does not work for someone who bought a Garden City, Manhasset, or Roslyn home in the 1990s or earlier, where long-held appreciation routinely runs $700,000 to $1.5M+ above original cost basis. Cost basis reconstruction — capital improvements, major systems, additions, certain selling expenses — reduces the taxable gain. This is CPA work that needs to happen before listing, not after.
South Carolina's estate planning advantages add to the move's appeal for senior sellers. SC has no state estate tax, no inheritance tax, and no gift tax. New York does have an estate tax with a "cliff" structure that can produce surprising tax exposure for estates near the threshold. For a Long Island senior seller also doing serious estate planning, establishing genuine South Carolina domicile has measurable downstream consequences for how the estate is settled. SC's package — coastal lifestyle, generous retirement deductions, no estate tax — makes it one of the strongest estate planning destinations in the Southeast for sellers whose primary concern is sheltering wealth across generations.
The Long Island Sale Funds the Charleston Purchase
The same sequencing principle applies to Charleston as to every other relocation in the series. Charleston-bound sellers fall into the same predictable pattern: they visit, fall in love with a downtown carriage house or a Mount Pleasant property, get pre-approved on a South Carolina mortgage before the Long Island home is listed, and then negotiate the Long Island sale under buy-side timing pressure. That sequence costs money on both transactions.
The cleaner sequence: the Long Island home sells first, or at minimum lists first with a realistic price-to-DOM expectation. Equity from the Jericho or Manhasset sale becomes the down payment in South Carolina. The closing timeline on the LI side dictates when the Charleston offer can responsibly go in. For sellers in higher price bands, this also means the New York Mansion Tax — 1% of sale price on transactions $1M and over — gets accounted for in net-proceeds math before any South Carolina budget is locked in. South Carolina has a relatively modest deed recording fee (around 0.37% on the consideration paid) — favorable compared to New York's structure.
A Practical Pre-Listing Roadmap
The cleanest version of this move starts twelve to eighteen months out. The first six months are research — running the actual tax math with a CPA (including the retirement income deductions if applicable), getting real South Carolina insurance quotes on two or three target neighborhoods, narrowing the Charleston area to specific zip codes or islands, and getting a realistic Long Island home valuation. A home valuation done early gives the seller a real number to plan around, not a Zestimate guess.
The next six months are prep. Cost basis documentation, capital improvement records, conversations with a New York real estate attorney about the closing process — including the PCDS disclosure, the binder-and-contract sequence, and the typical 10% earnest money structure. This is also the window for repairs that will actually pay back at sale, the staging conversation, and the photography and marketing strategy for the listing itself.
The final phase is the listing and the parallel Charleston search. By the time the Long Island home goes live, the seller knows what their net proceeds will be in three or four scenarios, what the Charleston budget looks like in each, and how the closing timelines will align.
Frequently Asked Questions
Q: Is Charleston actually cheaper than Long Island once everything is factored in?
A: Yes, meaningfully — but the gap depends on which submarket the seller picks and how heavily insurance enters the budget. South Carolina's top income tax rate of 6.4% is below New York's combined state-and-city burden. Charleston County's effective property tax rate of around 0.41% to 0.53% is among the lowest of any destination covered in this series. The complications are coastal hurricane insurance (which has risen sharply over the last five years), the 9% combined sales tax (high by national standards), and Charleston's appreciated home values (up over 40% since 2020). Net of everything, Charleston is favorable for most relocating sellers — particularly seniors taking advantage of SC's retirement income deductions.
Q: Does South Carolina tax retirement income?
A: Social Security is fully exempt at all ages. Beyond that, residents 65 and older can deduct up to $10,000 of retirement income per person, plus an additional $15,000 deduction that stacks for a combined deduction of $25,000 per person, $50,000 for married couples filing jointly. For a Long Island senior couple with significant retirement-account assets, this structure shelters meaningfully more retirement income from state tax than North Carolina's flat-rate approach. It's not as good as Florida's zero tax or Pennsylvania's full retirement-income exemption, but it's significantly better than NC, GA, or many other Southern destinations.
Q: How serious is the hurricane, flooding, and insurance situation in Charleston?
A: Real and worsening. The Charleston area has experienced direct hits from Hurricane Hugo (1989), Hurricane Matthew (2016), and Hurricane Florence (2018), along with regular smaller tropical systems. Downtown Charleston now experiences more than 70 days per year of tidal flooding even in clear weather. Insurance premiums on coastal properties have risen sharply over the last five years, particularly for waterfront and barrier-island homes. Real insurance quotes — not estimates — should be in hand before any offer goes in. Flood-zone designation on the specific target property is critical.
Q: What about capital gains tax on a long-held Long Island home?
A: The federal exclusion shelters $250,000 of gain for single filers and $500,000 for married couples filing jointly on a primary residence owned and lived in for two of the last five years. Sellers who have owned the same Long Island home for two or three decades routinely have appreciation well above those thresholds. Cost basis reconstruction — capital improvements, major systems, additions, certain selling expenses — reduces the taxable gain. South Carolina taxes capital gains as ordinary income, and the timing of the sale relative to establishing SC residency affects whether SC state tax applies. This is a CPA conversation that should happen before listing.
Q: Should the Long Island home be sold before buying in Charleston?
A: In most cases, yes. Selling first locks in actual equity, removes buy-side timing pressure from the Long Island listing, and produces the cleanest financing math on the Charleston purchase. The exception is a seller with substantial outside liquidity who can carry both homes briefly. For everyone else, the sequence that protects net proceeds is sell-first or list-first-with-flexibility.
Closing Thought
A move from Long Island to Charleston is the coastal Southern relocation that doesn't compromise on culture. The historic city, the food, the architecture, the slow pace, and the favorable retirement income tax structure are real assets — assets that few other destinations in the series can match in combination. The hurricane and insurance reality is real too, and deserves honest treatment before any move is committed to. But the move still rests on the same foundation as any other: the Long Island sale produces the equity, the timing, and the calm to buy well in South Carolina. For sellers thinking through this conversation, a quiet home valuation is a useful starting point. Reaching out to talk through the timeline, with no pressure either way, is welcome too.
By Eric Berman, REALTOR® | The Eric Berman Team at Compass
Eric Berman | Long Island & Queens REALTOR® | Compass 1468 Northern Blvd, Manhasset, NY 11030 (917) 225-8596 | eric@ericbermanteam.com | theericbermanteam.com
