By Eric Berman, REALTOR® | The Eric Berman Team at Compass
TL;DR:
Miami draws Long Island sellers with no state income tax, year-round warmth, and a real urban feel that few other Florida markets offer. The big risks are insurance costs, hurricane exposure, and the assumption that Florida is uniformly cheap — Miami is not. The Long Island sale is what gives a seller the equity, timing, and calm to buy in Miami without overpaying.
Why Miami Is the One Florida Market That Isn't Like the Others
Most of Florida's pull on Long Island sellers comes from the same handful of factors: no state income tax, lower property taxes, warmer weather, and the implicit promise of a slower pace. Miami delivers the first three and explicitly rejects the fourth. It is the only Florida market that reads as urban — dense, fast, international, and culturally specific in a way that Naples, Sarasota, or The Villages never will be. For Long Island sellers leaving the New York metro because they want a different kind of city rather than a quieter version of suburban life, Miami is the obvious destination.
The financial headline is real. Florida has no state income tax, which for high earners leaving New York's combined state-and-city burden is a meaningful annual gap. Miami-Dade County's effective property tax rate sits around 0.76% countywide — well below Nassau County's rate above 2%. Florida's Homestead Exemption shelters $51,411 of assessed value in 2026, and the Save Our Homes amendment caps annual assessment increases at 3% on a homesteaded primary residence. These are real, durable advantages.
The complications are also real. The City of Miami's millage rate runs around 20 mills, or roughly 2% of fair market value — among the highest in Florida. Insurance, in many parts of Miami-Dade, has tripled in the last five years. Hurricane and flood exposure changes how a seller from Manhasset or Port Washington thinks about the carrying cost of a coastal home. The honest version: Miami is cheaper than Long Island on the line items most sellers focus on, and meaningfully more expensive on the line items most sellers underestimate.
The Insurance Conversation Most Sellers Don't Run Soon Enough
Property tax savings are easy to model. Insurance is harder, and it is the line that quietly determines whether a Miami move actually pencils out the way the seller imagined.
Florida's homeowner's insurance market has been under pressure for years. Many national carriers have pulled back from writing new policies in coastal Florida. Premiums on a comparable home in Miami-Dade routinely run two to four times what the same coverage costs on Long Island. For a waterfront property — South Beach, Coconut Grove, Coral Gables along the canals, Key Biscayne — the premium and the deductible structure can be punishing. 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.
The seller who runs the numbers honestly often finds that the Florida property tax savings are partly or fully offset by the Florida insurance bill. That doesn't kill the move — the income tax savings still stand, and for high earners the net is still strongly positive. But the budget conversation that starts with "Florida is so much cheaper" needs the insurance line entered before any Miami offer goes in. A seller who learns about Citizens Property Insurance, the 2% hurricane deductible structure, and the wind mitigation inspection process after signing a contract has missed the window to plan around them.
The Long Island Sale Funds the Miami Purchase — In That Order
Miami sellers fall into a predictable pattern. They visit, they fall in love with a neighborhood — Coral Gables, Coconut Grove, Pinecrest, the Beaches, sometimes Brickell or Edgewater for a downtown lifestyle — and they get pre-approved on a Miami mortgage before the Long Island home is listed. By the time they are working a Miami offer, they are also negotiating their Long Island listing under buy-side timing pressure. That sequence costs money on both transactions.
The cleaner sequence: sell first, or list first with a realistic price-to-DOM expectation. The Long Island closing date dictates when the Miami offer can responsibly go in. Equity from the LI sale becomes the down payment in Miami. 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 Miami budget is locked in. Miami has its own version of this: Florida's documentary stamp tax on the deed, plus Miami-Dade County's surtax on transactions over $100,000. These are buyer-side costs, but they affect what the seller can afford in Miami and need to be in the model.
There is a softer version of this for sellers without a fixed timeline. List the Long Island home, work the Miami search in parallel, and stay flexible until one transaction commits the other. That sequence produces the cleanest move and the highest net proceeds — because no one is negotiating the Long Island sale from a position of buy-side urgency.
Capital Gains and the Long-Held Long Island Home
A meaningful share of Long Island sellers heading to Miami have owned the same home for two or three decades. 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 home in Garden City, Manhasset, or Port Washington in the 1990s or earlier, where long-held appreciation routinely runs $700,000 to $1.5M+ above original cost basis. Cost basis can be reconstructed for sellers who kept records. Capital improvements over the life of the ownership — kitchens, bathrooms, additions, roofs, major systems — add to basis and reduce the taxable gain. So do certain selling expenses. This is CPA work that needs to happen before the home is listed, not after the wire hits the account.
Florida adds one more layer worth knowing. Florida has no state estate tax, no inheritance tax, and no gift tax. For Long Island sellers who are also doing serious estate planning — particularly senior sellers with significant appreciation in both the home and other assets — establishing Florida domicile has measurable downstream consequences. That's a conversation for an estate attorney, not a real estate question, but it's another reason Miami ranks higher for senior sellers than the income-tax savings alone suggest.
Miami Is Many Cities, Not One
The biggest mistake Long Island sellers make about Miami is treating it as a single market. It isn't. Coral Gables is mature, tree-lined, and reads more like the Gold Coast — older money, walkable village core, single-family homes on real lots. Pinecrest and Palmetto Bay are leafier and more suburban, with the kind of half-acre-plus parcels that translate cleanly from a North Shore Nassau lifestyle. Coconut Grove is the old-Miami artist-bohemian neighborhood that's grown into a high-end-but-still-quirky pocket. Key Biscayne is its own island, with its own rules and its own hurricane-evacuation reality. Miami Beach (South Beach, Mid-Beach, North Beach) is condo-heavy, beach-fronting, and more transient. Brickell and Edgewater are the high-rise downtown markets — better for a buyer who wants a Manhattan-density urban life with palm trees than for one who wants a yard and a garage.
Each of those neighborhoods is a different financial decision. Property taxes vary materially between municipalities within Miami-Dade. Insurance costs vary even more, especially between coastal and inland addresses. School zoning matters for buyers with school-age children, and the school-zoning conversation in Miami-Dade is more complex than in most Long Island districts because it overlays a public-school district map onto a heavy private-school ecosystem.
A Long Island seller who tours Miami for one weekend and falls in love with one neighborhood is making a much narrower decision than they realize. Two separate visits, ideally in different parts of the metro, is the minimum.
A Practical Pre-Listing Roadmap for Sellers Heading to Miami
The cleanest version of this move starts twelve to eighteen months out, not three. The first six months are research — running the actual tax math with a CPA, getting real Florida insurance quotes on two or three target neighborhoods, narrowing the Miami area to specific zip codes, 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 that sometimes surprises sellers. 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 Miami 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 Miami budget looks like in each, and how the closing timelines will align. That's the move that finishes well. The one that starts with a Miami offer first and figures out the Long Island sale second is the one that ends with regrets.
Frequently Asked Questions
Q: Is Miami actually cheaper than Long Island once everything is factored in?
A: It depends on the line item. The big wins are state income tax (0% in FL vs. NY's combined state-and-city burden that can exceed 12% for high earners) and property tax (Miami-Dade effective rate around 0.76% vs. Nassau above 2%). The losses are insurance (often 2–4x Long Island premiums in coastal Miami-Dade), and the partial loss on housing is complicated — Miami is not uniformly cheaper than Long Island once neighborhood quality is matched. The honest answer is yes, net of everything, for most high earners — but the gap is smaller than the brochure version suggests.
Q: Should the Long Island home be sold before buying in Miami?
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 Miami 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 — never buy-first.
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 — reduces the taxable gain. This is a CPA conversation that needs to happen before listing, not after.
Q: How bad is the insurance situation in Miami?
A: It's the single biggest financial variable in a Miami move. Premiums on a comparable home in Miami-Dade routinely run two to four times what the same coverage costs on Long Island. Many national carriers have pulled back from writing new coastal Florida policies. Wind and flood are typically separate policies, and waterfront properties carry the highest premiums and the largest deductibles. Real insurance quotes — not estimates — should be in hand before any Miami offer goes in.
Q: What's the right timeline to start planning a Miami move?
A: Twelve to eighteen months before the intended Miami close is the cleanest window. The first six months are research, tax planning, real insurance quotes, and a real Long Island valuation. The next six months are documentation, repairs, staging, and CPA-driven cost basis work. The final phase is listing the Long Island home and running the Miami search in parallel. Three months out is doable but produces the most rushed and expensive version of the move.
Closing Thought
A move from Long Island to Miami is two transactions, not one. The Miami half gets most of the seller's emotional attention — the new neighborhood, the water, the new chapter — but the Long Island half determines how the move actually goes. Selling well on this side of the country produces the equity, the timing, and the calm to buy well on the other. 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
