How to Build a Platform Deck on the Ground

Building a platform deck on the ground is an excellent way to create an outdoor living space for relaxing, dining, or entertaining. Whether you want a cozy spot for morning coffee or a spacious area for summer barbecues, a platform deck can transform your backyard. Here’s a step-by-step guide on how to build a beautiful and functional platform deck on a budget.

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2/23/20252 min read

a deck deck with a deck and stairs
a deck deck with a deck and stairs

1. Planning and Design

Before you start building, take the time to plan and design your platform deck:

  • Determine the Size and Location: Choose a flat area in your yard with proper drainage. Consider the size based on your needs and available space.

  • Check Local Building Codes: In many areas, a ground-level deck may not require a permit, but it’s always best to check with local authorities.

  • Choose Your Materials: Pressure-treated lumber is a cost-effective and durable choice. You can also use composite decking for a low-maintenance option.

2. Gather Your Materials and Tools

To build a platform deck, you’ll need the following materials and tools:

  • Materials:

    • Pressure-treated lumber (for frame and decking boards)

    • Gravel (for drainage and base leveling)

    • Concrete deck blocks (to support the frame)

    • Galvanized screws and decking fasteners

    • Weed barrier fabric (to prevent grass and weeds)

  • Tools:

    • Circular saw and drill

    • Level and measuring tape

    • Shovel and rake

    • Rubber mallet

3. Prepare the Site

Proper site preparation is essential for a stable and long-lasting deck:

  • Clear the Area: Remove grass, rocks, and debris from the area where the deck will be installed.

  • Level the Ground: Use a rake to level the soil, creating a flat surface.

  • Add a Gravel Base: Spread a 2-3 inch layer of gravel to enhance drainage and prevent the deck from shifting.

  • Lay Weed Barrier Fabric: Place weed barrier fabric over the gravel to prevent weed growth under the deck.

4. Build the Deck Frame

The frame is the foundation of your platform deck:

  • Lay Out the Frame: Arrange pressure-treated lumber on top of the deck blocks to form the perimeter of the deck. Ensure it’s level and square.

  • Secure the Joists: Attach the joists to the frame, spacing them 16 inches apart for support.

  • Check for Level: Use a level to ensure the frame is even before securing it in place.

5. Install the Decking Boards

Once the frame is complete, it’s time to add the decking boards:

  • Start from One Side: Begin installing the decking boards from one side of the deck, leaving a small gap between each board for drainage.

  • Secure with Decking Screws: Use galvanized screws or decking fasteners to secure the boards to the frame.

  • Trim the Edges: Once all boards are installed, trim the edges for a clean and uniform appearance.

6. Finishing Touches

  • Sand and Seal: Sand any rough edges and apply a weather-resistant sealant to protect the wood from the elements.

  • Add Railings (Optional): If desired, add railings for safety and style.

  • Decorate and Enjoy: Furnish your new deck with outdoor furniture and accessories to create a cozy, inviting space.

Need Professional Help?

Building a platform deck can be a rewarding DIY project, but it requires time, tools, and skill. If you want a professionally built deck without the hassle, contact ProHands Handyman. Our team provides expert deck construction services to enhance your outdoor living space.

📞 Call or text: 818-401-7766
📍 Serving Glendale, Burbank, Pasadena, and surrounding areas.

Transform your backyard today—reach out for a free estimate!