WallDockDeck
Gulf Stream · Palm Beach County

What flood zone is Gulf Stream in, and what does it require?

BFE +1 ft (state code)no extra town freeboard found

Gulf Stream's Chapter 48, adopted in 2017, uses the plain 50% substantial-improvement test with no look-back. FEMA lists the town at CRS class 10, so residents get no CRS discount on flood insurance. Each project is judged alone, with no rolling total of earlier work.

Source: Gulf Stream Code of Ordinances Ch. 48 Flood Prevention and Protection, Sec. 48-1; FEMA Community Status Book, Florida (www.fema.gov/cis/FL.html, report 10/03/2026); 2023 Florida Building Code, Residential R322.2.1, R322.3.2; 44 CFR 59.1; FEMA Flood Map Service Center · Verified 2026-10

The detail

Substantial improvement / damage50 percent of market value, no cumulative period - Sec. 48-1 (Ord. No. 17-01).
DeterminationsSubstantial improvement and substantial damage determinations are made under Sec. 48-24 when permits are sought to improve or repair a building.
No-BFE areasWhere no BFE is mapped, the BFE may be specified as two feet above the highest adjacent grade if there is no evidence of deeper flooding - Sec. 48-42.
More trigger points$1,147,000 building value -> $573,500 trigger; $913,000 building value -> $456,500 trigger.
FEMA flood mapFEMA's Community Status Book (report dated 3 Oct 2026) lists Gulf Stream as NFIP community 125109 with a current effective FIRM dated 20 Dec 2024. Zones are set parcel by parcel, so no single zone covers the whole city - check your own address.
NFIP historyFEMA record: first FIRM 24 Nov 1972; regular NFIP program since 24 Nov 1972; entered CRS 1 Oct 1999.
Flood insurance discountCRS class 10 (class date 1 Oct 2015) - a class 10 community receives no premium discount.
State minimum2023 Florida Building Code, Residential R322.2.1 and R322.3.2 - lowest floor (A zones) or bottom of the lowest horizontal structural member (V and Coastal A zones) at BFE + 1 ft or the design flood elevation, whichever is higher.
Look up your zoneEnter the address in FEMA's Flood Map Service Center (msc.fema.gov), the official public source for FIRMs; an elevation certificate shows how your floor compares with the BFE.

Your city's height sheet

The elevation your city requires, the datum it is measured in, and the section of code that says so. One page.

Available for the cities whose rule we have verified and sourced.

Done — it is on the way to your inbox. Not there in a minute? Check your Promotions or Spam folder, and move it to your inbox so the next ones arrive.

The county rule behind this

What applies across Palm Beach County, and where each city departs from it.

Palm Beach CountySeawall requirements county-wide

The same question, nearby

The rule changes at the city line, not the county line.

Palm BeachBoca RatonPalm BeachDelray BeachPalm BeachJupiterPalm BeachWest Palm Beach

Other questions about Gulf Stream

Seawall height requirementHow high does a seawall have to be in Gulf Stream?Seawall permit processDo I need a permit to repair a seawall in Gulf Stream?Dock permit & size limitsHow big a dock can I build in Gulf Stream?Boat lift rulesWhat are the boat lift rules in Gulf Stream?Waterfront deck requirementsWhat are the deck setback and railing rules in Gulf Stream?Checking a marine contractorHow do I check a marine contractor in Gulf Stream?Storm prep & documentationWhat are the storm and debris rules in Gulf Stream?

Twelve signs a seawall is failing

What to look for, where to look for it, and what it means when you find it. Walk your wall in twenty minutes.

A screening sheet for owners, not an engineering inspection.

Done — it is on the way to your inbox. Not there in a minute? Check your Promotions or Spam folder, and move it to your inbox so the next ones arrive.