If you’re buying or selling near the water in Babylon, Bay Shore, Islip, Sayville or Lindenhurst, flood insurance can make or break your deal. Here’s the short answer. Check the flood zone early. Get a real quote before you sign. And watch the calendar, because the federal flood program has a deadline on December 11.
Know the flood zone before you fall in love
Start with the FEMA flood map. You can look up any address for free on the FEMA Flood Map Service Center. If the home sits in a high-risk zone and you’re using a federally backed mortgage, your lender will require flood insurance.
Moreover, the zone is only part of the story. Under FEMA’s current pricing system, Risk Rating 2.0, your premium is based on the home itself. That includes distance from water, foundation type, how high the lowest floor sits and past claims, according to the Congressional Research Service. Two houses on the same block can get very different quotes.
What flood insurance costs in Suffolk
Suffolk County pays more than most of New York. NFIP policies written or renewed in Suffolk in June 2026 averaged $1,606 in premium, versus $1,264 statewide, based on OpenFEMA data compiled by Out of the Storm News. That’s an average, not a quote. Your number could be much lower or much higher.
Therefore, ask for a quote during your attorney review, not after.
Sellers: New York now requires flood disclosure
If you’re selling, this one matters. Since March 20, 2024, New York sellers can no longer skip the Property Condition Disclosure Statement by giving the buyer a $500 credit, as the New York State Bar Association explains. The form now asks about flood zones, flood insurance, FEMA flood assistance, elevation certificates and past flood claims.
Moreover, you have to deliver it before the buyer signs a contract. Gather your flood paperwork now. An elevation certificate or a clean claims history can help your buyer get a better quote.
Buyers: you may be able to take over the seller’s policy
Here’s a tip many buyers miss. A seller can assign an existing NFIP building policy to the buyer. The seller signs the assignment on or before closing, and the buyer has 30 days after closing to submit it, per the FEMA NFIP Flood Insurance Manual.
A brand-new policy usually has a 30-day waiting period. However, if you buy it in connection with your mortgage closing, that wait doesn’t apply, according to the same manual.
Watch the December 11 deadline
The National Flood Insurance Program is authorized only through December 11, 2026, according to FEMA. If Congress doesn’t extend it, FEMA would stop selling and renewing policies. Existing policies stay in force, and valid claims still get paid.
Therefore, if you plan to close in December and need flood insurance, line up your policy early. It has lapsed before. The Congressional Research Service notes it has had 36 short-term extensions since late 2017.
“On the South Shore, flood insurance is part of the price of the home. Get the quote early and there are no surprises at closing.”
Ready to buy or sell near the water?
Flood questions shouldn’t stop your move. They just need a plan. Contact Jones Hollow Realty Group at joneshollowrealty.com to talk with a local agent who knows the South Shore.