Babylon, NY Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard required
- 2 feet above BFE
- Applies to
- New/substantially improved structures
- Zone A (no BFE data)
- 3 ft above adjacent grade
- Certification
- Licensed engineer or surveyor
- Community number
- 360790 (FEMA)
Summary
New and substantially improved homes in Town of Babylon's flood-hazard zones must sit at least two feet above base flood elevation, per Ch. 125.
Within Zones A1-A30, AE and AH, and also Zone A if base flood elevation data are available, new construction and substantial improvements shall have the lowest floor (including basement) elevated to or above two feet above the base flood elevation.
(2) Within Zone A, when no base flood elevation data are available, new and substantially improved structures shall have the lowest floor (including basement) elevated at least three feet above the highest adjacent grade.
(3) With Zone AO, new and substantially improved structures shall have the lowest floor (including basement) elevated above the highest adjacent grade at least as high as two feet above the depth number specified in feet on the community's Flood Insurance Rate Map enumerated in § 125-6 (at least two feet if no depth number is specified).
(4) Within Zones AH and AO, adequate drainage paths are required to guide floodwaters around and away from proposed structures on slopes.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4941158; v66 updated 2026-05-13; through 05-13-2026).
Full Breakdown
In Zones A1-A30, AE and AH (and Zone A where data exist), the Town of Babylon requires the lowest floor of any new or substantially improved residential structure, including basement, to be elevated to or above two feet above base flood elevation, a two-foot freeboard margin beyond FEMA's minimum. Coastal high-hazard Zones V1-V30 and VE carry the same two-foot freeboard, measured to the bottom of the lowest structural member. Nonresidential buildings may elevate or floodproof to the same two-foot mark. As-built elevation must be certified by a licensed engineer or surveyor and filed with the local administrator before occupancy.
Violations & Fines
Building below the required elevation without a valid permit is an offense: fine of $500-$1,500 or up to 15 days jail per Town Board Ch. 125 § 125-9; each day of noncompliance is a separate offense, and the Bureau of Administrative Adjudication can impose the same $500-$1,500 penalty.
Frequently Asked Questions
How much above base flood elevation must a new Town of Babylon home be built?
What if my Zone A lot has no published base flood elevation?
Sources & Official References
Other rules in Babylon
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Flood Elevation Requirements in Nearby Cities
How other cities in Suffolk County handle flood elevation requirements.