A Comprehensive Guide on Building A Deck on Uneven Ground


As the saying goes, "Home is where the heart is," and our heart craves an aesthetically pleasing environment. Adding a deck to your outdoor space is one of the ways to achieve this. A deck enhances the home’s appearance, provides an arena to enjoy outdoors, and adds value to the property. But what if the ground is uneven? Is it even possible to build a deck on uneven ground? The answer is a resounding yes. This comprehensive guide will discuss in detail how to build a deck on uneven ground.

Materials Required

Before embarking on this endeavor, it’s important to gather the necessary supplies. Having all materials on hand will allow for a smoother workflow and prevent mid-project trips to the hardware store. Here’s your checklist:

  • Concrete mix
  • Shovel
  • Angle grinder
  • Circular saw
  • Spirit level
  • Concrete deck blocks
  • Decking screws
  • Deck boards
  • Safety equipment (safety goggles, gloves)

Preparation of Ground

The first step in constructing your deck is preparing the ground. Regardless of its unevenness, the ground must be clean and clear of any rubble or obstructive objects. Mark out the area where you plan to build your deck using string or chalk. Digging up the topsoil will aid in leveling the ground, though perfection isn’t necessary due to the deck block system we’ll be using.

Installation of Deck Blocks

Deck blocks act as a solid base for your deck. Arrange these blocks at the corners of the marked-out area and other strategic points for increased stability. In case the uneven ground causes the blocks to remain unsteady, use a shovel to dig into the ground and lower them, ensuring they are level. Utilize a spirit level for precision.

Mounting the Posts

This phase entails installing the posts into the deck blocks. Ensure each post is securely fitted snuggly and vertically parallel. An angle grinder may be used to cut excess lengths and maintain uniform height across all posts. The use of a laser level ensures the preciseness of this process.

Laying the Deck Frame

The deck frame is formed by attaching timber beams to the top of the posts using decking screws. This provides the foundation on which the surface of your deck will be laid.

Installing the Deck Boards

The final step in building your deck is installing the deck boards. Cut them to match the size of your frame using a circular saw. Arrange them on the frame and secure them using decking screws. Your deck is now ready to be enjoyed.


Building a deck on uneven ground may seem like a monumental task, but with the right instructions, materials, and a little patience, it’s entirely possible. Not only do you augment the beauty of your home with a well-installed deck, but you also create an inviting outdoor space for your family and friends to enjoy. So, pull up your sleeves, gather your tools, and get started on your decking project.

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