Pro SWPPP – America’s #1 SWPPP Service files Notices of Intent through Florida’s DEP Business Portal for contractors across the state. If you’re in Florida and need to disturb land, you might be staring at a digital form right now, wondering how to actually submit this thing. Let’s fix that.
Filing your NOI through FDEP’s Business Portal isn’t hard, but it is specific. One wrong click and your project sits on hold. One missing fee and you’re not covered. This guide walks you through the exact steps, the costs, the deadlines, and the common mistakes so you can start work on time without a single penalty.

What Is the NOI and Why File It Online?
Your Notice of Intent is your official application for stormwater permit coverage. The acreage test itself is the familiar one: one acre disturbed, or less if your site is part of a larger common plan of development or sale. That test is covered in full in When Is a SWPPP Required? What is specific to Florida is the instrument and the clock. Coverage comes under the state’s Construction Generic Permit, and it does not begin the moment you hit submit.
The FDEP Business Portal is the online system where you submit that NOI. It replaced the old mail-and-fax process. The portal is faster, tracks your submission in real time, and gives you an electronic acknowledgement when your coverage is active. Pro SWPPP guides clients through this portal every single day.
Here’s the rule: your complete NOI and fee must reach FDEP at least two calendar days before you start disturbing soil. Coverage becomes effective two days after FDEP receives your complete NOI and fee. That means if you plan to break ground on Thursday, your NOI must be submitted and paid by Tuesday at the latest.
Step-by-Step: Filing Your NOI in the FDEP Business Portal
Step 1: Register Your Account and Get Your PIN
Before you can file anything, you need a registered business account in the DEP Business Portal. Go to the portal home page and create an account for your company. You’ll receive a PIN by mail, which can take a few days. Start this process early. Waiting until the day before your project starts is a recipe for delay.
Your PIN is your electronic signature. Without it, you can’t submit the NOI. A preparer can fill out the form, but the Responsible Authority must sign it with the PIN.
Step 2: Log In and Navigate to the NOI Application
Once your account is active and you have your PIN, log into the Business Portal. From the home page, choose Apply, then Discharge, then NPDES Notice of Intent. This path takes you to the CGP filing screen.
Name your application something clear, like “Main Street Mixed-Use NOI”. You’ll see it in your dashboard later, so make it easy to identify.
Step 3: Fill Out the Application Screens
The portal will walk you through a series of screens. Have the following information ready:
- Site address and county
- Total acreage to be disturbed
- Operator name and contact information
- Name of the receiving waterbody or MS4
- Dewatering details, if applicable
- Project start date
You’ll also confirm that your Stormwater Pollution Prevention Plan (SWPPP) is ready to implement. The portal doesn’t require you to upload the SWPPP at this stage, but you must have it prepared and on site before you start work.

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Step 4: Pay the Fee
The portal will calculate your fee based on acreage. Large construction sites that disturb five or more acres pay $400. Small construction sites that disturb between one and 4.99 acres pay $250.
Payment is required at the time of submission. The portal accepts credit cards and electronic checks. Your NOI is incomplete without payment, and FDEP will not process it.
Step 5: Sign and Submit
The Responsible Authority must sign the NOI using the registered PIN. This is the legal signature that certifies the information is accurate and that the SWPPP is ready.
After you sign and submit, the portal will generate a confirmation screen. Save that confirmation. You’ll receive an email acknowledgement from FDEP once your NOI is processed, usually within one business day.
Step 6: Notify the MS4 (If Applicable)
If your site discharges to a municipal separate storm sewer system (MS4), you must send a copy of your NOI and FDEP’s acknowledgement letter to the MS4 operator within seven calendar days of receiving coverage. This is a separate requirement from the portal submission.
Check with your local municipality or county to confirm if your site discharges to an MS4 and who operates it. Pro SWPPP helps clients identify the correct MS4 contact and handle this notification step.
Common Mistakes That Delay Coverage
Filing Without a PIN
Many first-time filers log into the portal and realize they don’t have a PIN. The PIN arrives by mail after you register, so start your account setup at least two weeks before you need to file.
Incomplete or Missing Fee
An NOI without payment is an incomplete NOI. FDEP cannot process it. Make sure the payment goes through before you close the portal.
Assuming Submission Equals Coverage
Clicking “submit” does not mean you have coverage. Coverage becomes effective two days after FDEP receives your complete NOI and fee. Wait for the email acknowledgement before you start work.
Letting Anyone Sign the NOI
A project manager or consultant can prepare the NOI, but only the Responsible Authority can sign it. Make sure the right person has the PIN and access to the portal.
Forgetting the MS4 Notice
If your site discharges to an MS4, you have seven days to notify the operator. Missing this step can result in a violation, even if your NOI was filed correctly.

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What Happens After You Submit?
Once FDEP processes your NOI, you’ll receive an email acknowledgement. This email includes your tracking number and effective date. Save this email. It’s proof that you have permit coverage.
Your coverage remains in effect as long as your project is active and you’re following your SWPPP. If the project changes ownership, you’ll need to file a Notice of Termination (NOT) or a new NOI for the new operator. If the project finishes and all disturbed areas are stabilized, you file a NOT to close out your permit.
FDEP can inspect your site at any time. Inspectors will ask to see your SWPPP, your NOI acknowledgement, and your inspection logs. Pro SWPPP provides inspection-ready SWPPPs that include all required maps, schedules, and Best Management Practices (BMPs) for Erosion Control and Sediment Control.
How This Fits into the Bigger Stormwater Picture
The NOI is part of the National Pollutant Discharge Elimination System (NPDES), which comes from the Clean Water Act. Every state administers its own stormwater program under EPA oversight. Florida’s program is run by FDEP, while states like Texas operate through the TCEQ and states like Georgia work through Georgia EPD.
The Construction General Permit (CGP) requires operators to develop and implement a SWPPP, which outlines the BMPs you’ll use to control erosion and sediment. The NOI tells the state that you intend to comply with the CGP for your specific site. If you want to understand how Florida’s requirements compare to broader statewide guidance, check out Florida SWPPP Requirements for the full state-level overview.
States differ in fees, timelines, and portal systems, but the core concept is the same. You file an NOI, pay a fee, implement your SWPPP, and keep records. Pro SWPPP operates nationwide and knows the local rules for each program.
Paper Filing: When and Why
FDEP prefers electronic filing through the Business Portal, but paper filing is still allowed in some cases. If you cannot access the portal or if your account has technical issues, you can mail a paper NOI with a check to FDEP’s Tallahassee office.
Email submissions are not accepted. Email does not satisfy federal signatory requirements under NPDES regulations. If you need to file by mail, use the DEP Form 62-621.300(4)(b) and send it certified mail so you have proof of delivery.
For most projects, the portal is faster and more reliable. Pro SWPPP recommends the portal for all new NOIs unless you have a specific reason to file by mail.
Why Professional Help Matters
Filing an NOI is straightforward, but building a compliant SWPPP is not. Your SWPPP must include site maps, narrative descriptions, inspection schedules, and BMPs tailored to your soil type, slope, and receiving waters. It must comply with the CGP and any local MS4 requirements.
Pro SWPPP creates CPESC-certified SWPPPs that meet FDEP standards and pass inspections. Our team handles the SWPPP development, the NOI filing, and the MS4 notifications. You get a complete compliance package, not just a generic template. To be clear about scope: your crews install and maintain the controls in the field. Pro SWPPP writes the plan, files the permit, performs the inspections and keeps the records. Get a free estimate and we will price your Florida filing before you commit.
FAQ
Do I need an NOI for every construction project in Florida?
You need an NOI if your project disturbs one or more acres of land, or if it’s part of a larger common plan of development that disturbs one or more acres total. Projects under one acre generally do not require an NOI, but check with your local MS4 for any additional local requirements.
Can I file the NOI the day before I start work?
No. Your complete NOI and fee must be submitted at least two calendar days before you begin land-disturbing activities. Coverage becomes effective two days after FDEP receives your complete submission, so plan accordingly.
What if I make a mistake on the NOI?
You can contact FDEP to correct minor errors before coverage is issued. If coverage has already been issued, you may need to file an amendment or a new NOI depending on the type of mistake. The portal allows you to track your submissions and update information in some cases.
Do I need to upload my SWPPP to the portal?
No. The portal does not require you to upload your SWPPP at the time of NOI filing. However, you must certify that the SWPPP is ready to implement, and you must have it on site before work starts. FDEP inspectors will ask to see it.
How long does it take FDEP to process an NOI?
FDEP typically processes complete NOIs within one business day. You’ll receive an email acknowledgement with your effective coverage date. If your NOI is incomplete or the fee is missing, processing will be delayed.
Can a consultant file the NOI for me?
Yes, a consultant or preparer can fill out the NOI, but the Responsible Authority for the project must sign it with the registered PIN. Make sure the right person has access to the portal and the authority to certify the information.
What happens if I start work before my NOI is approved?
Starting work without permit coverage is a violation of the Clean Water Act and Florida regulations. You can face fines, stop-work orders, and enforcement action. Always wait for the FDEP acknowledgement before disturbing soil.
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By Derek E. Chinners, CPESC — Founder & Stormwater Consultant, Pro SWPPP, LLC
Related: What Is a SWPPP? · When Is a SWPPP Required? The 1-Acre Rule and Common Plans · Florida SWPPP Requirements · Florida FSESCI Certified Inspections · How to File a Notice of Termination