If you’re considering building a floating deck, you’re probably picturing those perfect summer days spent lounging outside, grilling, or hosting friends. But before you start buying lumber and pulling out the tools, one important question needs to be answered: Do you need a permit?

The answer depends on several factors—mainly your location, the size of the deck, and the specific construction details. Understanding the rules before you start building can save you from costly delays, fines, or even being forced to take the deck down later.

What Exactly Is a Floating Deck?

A floating deck—sometimes called a freestanding or unattached deck—isn’t physically connected to your house or another permanent structure. Instead, it usually sits on top of the ground or rests on concrete blocks or deck piers.

Homeowners often choose floating decks because they’re:

• Cost-effective compared to traditional attached decks
• Easier to install with fewer construction steps
• Flexible in placement, allowing them to be built almost anywhere in the yard

Because they’re not attached to a house, some people assume permits aren’t needed. However, this isn’t always true.

When a Permit Might Be Required

The need for a permit often comes down to the size and height of the deck, along with any additional structures it includes. While every area is different, here are common scenarios:

• Size Limits: In many places, decks smaller than 200 square feet may not require a permit. Larger decks often do.
• Height Limits: Decks lower than 30 inches above the ground may be exempt, while anything taller typically requires approval.
• Added Features: Railings, stairs, or built-in seating can trigger permit requirements even if your deck is small and low. These features affect safety, stability, and design compliance.
• Obstructions or Access Issues: If your deck blocks visibility, drainage, or access to other areas, local authorities may require a review.

Why Local Rules Matter

Building codes, zoning laws, and setback requirements can vary dramatically between counties, cities, and even neighborhoods. What’s acceptable in one location might be prohibited in another. That’s why the first step in your deck project should be a call or visit to your local building department.

They can provide guidance on:

• Minimum and maximum height allowances
  
• Setback regulations (distance from property lines, fences, or other structures)
• Load-bearing requirements for safety
• Permitted building materials
  
• Whether inspections are needed during or after construction

The Risks of Skipping a Permit

Some homeowners decide to build without getting a permit, especially if the deck is small or tucked away in the backyard. This can lead to serious problems, such as:

• Fines and penalties for unpermitted work
• Stop-work orders that delay your project indefinitely
• Being forced to tear down the deck if it doesn’t meet code
• Issues when selling your home, as unpermitted structures can raise red flags during inspections

Best Practices Before You Build

1. Contact Your Local Building Authority: Explain your deck design, size, and height to get a clear answer on permitting requirements.
2. Prepare Documentation: Have a rough sketch or plan ready. Include measurements, materials, and any additional features.
3. Ask About Inspections: Some jurisdictions require inspections during and after construction to ensure safety and code compliance.
4. Plan Ahead for Materials and Placement: Make sure your chosen site meets all local setback and zoning rules.

Bottom Line

Floating decks may seem like a simple, low-profile backyard upgrade, but they still need to follow local building codes. In some cases, no permit is necessary. In others, even a small deck could require approval—especially if it includes stairs, railings, or other built-in features.

When in doubt, always check with your local building department before starting construction. A quick conversation now can prevent headaches later. With proper planning and compliance, you can enjoy your floating deck knowing it’s safe, legal, and built to last.

This post was written by a professional at Supreme Marine Floating Docks. Supreme Marine Floating Docks is dedicated to providing top-quality floating docks and marine accessories that combine durability, innovation, and superior performance. While we are a new brand, our team brings over 50 years of combined industry experience, making us trusted marina contractors Ft Lauderdale.We are passionate about designing and delivering products that meet the highest standards, ensuring reliability and longevity in all marine environments. Whether for residential, commercial, or recreational use, our docks are crafted with precision and care, setting a new benchmark in the industry. At Supreme Marine, we don’t just build docks—we create lasting solutions.