DERM Permit for Seawall Repair in Florida: What Homeowners Need to Know
Your contractor told you a DERM permit is required. Here's exactly what that means, how long it takes in 2025, what it costs, and why SMWP handles every step so you don't have to.
July 2025: DERM Permit Reform — 90-Day Cap Now in Effect
Miami-Dade County commissioners unanimously passed a seawall permit reform ordinance on July 1, 2025. DERM must now review and issue most seawall permits within 90 days — down from the previous 18–24 month wait. The new Gold Key portal makes applications trackable in real time. This is the most significant change to seawall permitting in the county in decades.
If your contractor mentioned a DERM permit requirement, you're probably wondering what DERM actually is, how long the process takes, and whether you need a separate contractor just to navigate the paperwork. This guide answers all of it in plain English.
DERM stands for Miami-Dade County's Department of Regulatory and Economic Resources — specifically its Division of Environmental Management, which oversees coastal construction through the Coastal Permitting Program. Seawall repair and replacement in Miami-Dade requires a Class I Coastal Construction permit from DERM. Most projects also require coordination with the U.S. Army Corps of Engineers (ACOE) — though in Florida, those are typically handled simultaneously through a single state process.
SMWP handles every permit, every agency, and every application as part of every project. You sign once. We do the rest.
Section 1
Do You Always Need a DERM Permit? Exemptions Explained
Not every seawall repair requires the full Class I permit process. Certain minor repairs may qualify for an exemption — but even exempt work requires structurally approved plans from a licensed engineer.
What may be exempt:
Tieback repair or replacement with structurally approved engineering plans
Seawall cap repair or replacement with approved structural plans
Minor erosion fill within 2 feet waterward of the existing seawall footprint
What always requires a permit:
Any new seawall construction or full replacement
Extensions waterward of the existing structure
Work in sensitive shoreline or mangrove areas
Any structural work without pre-approved engineering drawings
Bottom line: When in doubt, assume a permit is required. Unpermitted work in Florida's coastal zone carries serious fines and can void your homeowner's insurance. SMWP determines your permit pathway — exempt, short-form, or full Class I — at no charge during your initial inspection.
Section 2
What Is a Class I Coastal Construction Permit?
The Class I permit is Miami-Dade DERM's primary authorization for coastal construction — covering seawalls, docks, bulkheads, and shoreline modification. It is issued by Miami-Dade's Department of Regulatory and Economic Resources through its Coastal Permitting Program.
Applications are now submitted and tracked through the Gold Key permitting portal, launched in December 2025. The portal provides real-time application status across all review stages — a significant improvement over the previous paper-based process.
For most structural seawall work, sealed engineering plans from a licensed marine or structural engineer are required as part of the application. SMWP coordinates engineering as part of every project proposal.
Before July 2025, obtaining a DERM seawall permit in Miami-Dade commonly took 18 to 24 months — while neighboring Broward and Palm Beach counties were completing equivalent reviews in 3 to 6 months. That disparity made Miami-Dade waterfront projects nearly impossible to plan on a reasonable timeline.
On July 1, 2025, the Miami-Dade Board of County Commissioners unanimously passed a seawall permit reform ordinance establishing an enforceable 90-day review and issuance standard. The reform also introduced:
The Gold Key portal for transparent, real-time application tracking
Incentives for eco-friendly designs including 3D-printed living seawalls
Streamlined coordination between DERM, city building departments, and FDEP
For homeowners: you can now plan and complete a permitted seawall project within a single calendar year in Miami-Dade. SMWP has navigated DERM permits throughout the old process and is fully positioned to submit clean applications that meet the new 90-day clock.
Ready to move forward?
We handle the entire permit process — from engineering to final sign-off.
SMWP is CGC Licensed, DERM and ACOE permitted, and actively working in Miami-Dade, Broward, and Palm Beach County. Call or email to schedule your seawall inspection.
ACOE Permits — When Federal Authorization Is Required
The U.S. Army Corps of Engineers (ACOE) regulates structures in or near navigable waters of the United States under the Rivers and Harbors Act and the Clean Water Act. Most seawall work in South Florida's tidal canals and bays falls within ACOE jurisdiction.
Florida uses the State Programmatic General Permit (SPGP VI), which coordinates FDEP and ACOE review simultaneously — eliminating the need for a fully separate federal application for most residential seawall repairs. For most projects, ACOE authorization is bundled within the SPGP VI process.
SMWP manages all ACOE and FDEP coordination as part of every project. Homeowners never interact with federal or state agencies directly.
Section 5
Step-by-Step: How the Permit Process Works with SMWP
1
Free site inspection
SMWP assesses your wall condition, measures linear footage, and determines your permit pathway — exempt, short-form, or standard Class I — at no charge.
2
Engineering plans
A licensed marine engineer prepares sealed drawings meeting DERM and city building authority standards. Included in your SMWP proposal.
3
Application submission
SMWP submits to DERM via the Gold Key portal, city building department, and FDEP/ACOE where applicable. You sign once — we handle all agencies.
4
Agency review & RFI response
Under the July 2025 reform, DERM must complete review within 90 days. SMWP tracks progress and responds to any requests for information immediately.
5
Permit issuance & scheduling
SMWP coordinates construction scheduling immediately upon permit approval. No delays between approval and mobilization.
6
Construction
Our licensed crew executes the permitted scope. No scope changes without a permit amendment — your project stays clean and insurable.
7
Final inspection & documentation
DERM and/or city inspector signs off. SMWP provides you with all permit documentation for your records, insurance, and future property sale.
Section 6
Permit Costs — What to Budget in 2025
Permit costs vary by project scope and county, but the ranges below reflect typical South Florida residential seawall projects.
Permit / Fee Type
Typical Cost
Notes
DERM Class I application fee
$500 – $2,500
Varies by project scope and complexity
City / municipal building permit
$300 – $1,200
Required in addition to DERM for most projects
Engineering / sealed plans
$1,500 – $4,000
Licensed marine engineer; required for most work
FDEP / ACOE (SPGP VI)
$0 – $500
Often bundled; no separate fee for most NWPs
Total permit & engineering
$2,500 – $8,000
Included in all SMWP written proposals
SMWP includes all permit fees, engineering coordination, and agency submissions in every written project proposal. There are no surprise permit invoices after you sign.
All Three Counties
Broward & Palm Beach: How Permits Differ
SMWP is licensed and permitted to operate in all three South Florida counties. Here's how the permitting authority and timeline differ by county:
Miami-Dade
⏱ 90 days (post-July 2025)
Permitted by DERM Coastal Permitting Program. Class I Coastal Construction permit. Applications via Gold Key portal.
Broward
⏱ 3–6 months
Managed through Broward County Environmental Protection and Growth Management Department (EPGMD). Similar coastal construction process.
Palm Beach
⏱ 2–5 months
Environmental Resource Permit (ERP) through Palm Beach County Department of Environmental Resources Management. FDEP/SPGP VI also required.
Important
What Happens If You Skip the Permit
Homeowners sometimes ask whether small repairs can avoid the permit process. The answer is: sometimes yes (see exemptions above), but never assume — and never let a contractor do unpermitted work without verifying the exemption applies.
Risks of unpermitted coastal work
Stop-work orders and fines from DERM — coastal zone violations are enforced actively
Federal violations and required restoration for unpermitted work in navigable waters
Voided homeowner's insurance coverage for future damage to the structure
Disclosure liability when selling — unpermitted seawall work can kill transactions
Retroactive permitting (after the fact) is significantly more expensive and time-consuming
If you've inherited a property with unpermitted seawall work or received a notice from DERM, SMWP can help you assess the situation and navigate a resolution. Call 305-985-4741.
Be Prepared
Documents to Have Ready Before You Apply
Having the right documents ready before SMWP submits your application keeps the 90-day clock running cleanly. Here is what helps:
Current property survey showing waterfront boundary and existing seawall location
Prior permit records or as-built drawings for existing seawall (if available)
Flood zone determination and elevation certificate (FEMA FIRM)
HOA approval letter if your community requires it for exterior work
Photos of current seawall condition — cracks, staining, movement, drainage
Title or deed showing ownership of the waterfront parcel
Don't have all of these? That's normal. SMWP helps you identify and gather what's needed during your initial inspection. Missing documents are a common cause of permit delays — we make sure your application is complete before it goes in.
FAQ
Frequently Asked Questions
Not always. Minor repairs such as tieback replacement or cap repair with approved structural plans may be exempt from the full Class I permit process. However, any new seawall construction, full replacement, or work that extends the wall waterward requires a Class I permit. When in doubt, assume a permit is required — unpermitted work in coastal zones carries significant fines.
As of July 2025, Miami-Dade passed a reform ordinance requiring DERM to review and issue most seawall permits within 90 days — down dramatically from the previous 18–24 month timeline. Applications submitted through the new Gold Key portal are tracked through defined review stages. Projects also requiring FDEP or ACOE authorization may have additional timelines, though Florida's SPGP VI process coordinates state and federal review simultaneously for most residential work.
DERM is Miami-Dade County's permitting authority — it issues the Class I Coastal Construction permit required for seawall work within the county. The ACOE (Army Corps of Engineers) is the federal authority regulating structures in navigable waters. In Florida, most residential seawall projects coordinate ACOE authorization through the SPGP VI process, which bundles state and federal review to avoid duplicate applications.
DERM Class I permit fees typically range from $500 to $2,500 depending on project scope. Most projects also require a city or municipal building permit ($300–$1,200) and licensed engineering plans ($1,500–$4,000). Total permitting and engineering costs typically fall between $2,500 and $8,000. SMWP includes all permit fees and engineering coordination in every written project proposal — no surprises.
Homeowners may apply for permits, but DERM requires sealed engineering plans from a licensed marine or structural engineer for most seawall work — and the contractor performing the work must hold a valid Florida CGC or marine contractor license. In practice, most homeowners find that using a licensed contractor who manages permitting is significantly faster and less stressful than self-permitting.
Yes. Broward County seawall work is permitted through the EPGMD, with typical review timelines of 3–6 months. Palm Beach County requires an Environmental Resource Permit through their Department of Environmental Resources Management, typically 2–5 months. All three counties also require FDEP and ACOE coordination for work in navigable waters. SMWP is licensed and actively permitted in all three counties.
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DERM permits are faster now. Start your project before the season does.
SMWP is CGC licensed, DERM and ACOE experienced, and actively permitted in Miami-Dade, Broward, and Palm Beach. Schedule your free seawall inspection — we assess your wall, identify your permit pathway, and handle everything from engineering plans to final sign-off.