How to Build a Fire Pit for Less Than $100
It’s not that hard to build a basic outdoor fire pit. You can do it in an afternoon, with a little elbow grease and less than $100.
This simple fire pit design can be completed in an afternoon for less than $100. And, you'll still have money and time left to host friends for a bonfire and beers.
How to Build a Fire Pit 01:26
Find out how to build a backyard fire pit for less than $100.
- retaining wall blocks (we used about 36)
- metal fire pit ring
- 7” square concrete pavers or fire brick for the bottom of the pit (we used about 15)
- pea gravel to fill in the spaces (about .5 cubic feet)
- all-purpose sand (one bag should do it)
Step 1: Plan Location and Layout
A fire pit should be built at least 15 feet from any structure and close to a water source. Ideally, you’ll want it on level ground. That will make building it much easier and sitting around it more comfortable.
Step 2: Determine the Size
The size of your fire pit will be determined by your metal fire ring. Place the ring and retaining-wall blocks on the ground to figure out the size of the fire pit. Mark the outside of the circle with the edge of a shovel.
Step 3: Dig a Hole
Move the retaining wall blocks out of the way and dig inside the marked hole. Make the hole at least 7” deep.
Step 4: Line Hole With Sand
Add a 1” layer of all-purpose sand in the hole and tamp it down flat. You may want to use a level to make sure it's all on the same plain.
Step 5: Add Base Row
Lay the bottom row of blocks inside the hole. Place the outside of the block on the very edge of the sand.
Step 6: Place Metal Ring
Place the metal ring on the sand inside the base row of blocks.
Step 7: Insert Bricks into Fire Pit Floor
Lay the pavers or fireplace bricks in the bottom of the fire pit. Cover as much area as possible.
Step 8: Add Pea Gravel
Fill the gaps between the blocks and the pavers with pea gravel.
Step 9: Place Remaining Rows of Blocks
Stack the outer blocks to your desired height. Stagger the seams of each layer.