how to build an outdoor campfire pit

How to Build a Backyard Firepit

July 1, 2025

how to build an outdoor campfire pit

We have been wanting to create a backyard firepit area for our family since we moved in, and we recently had an open weekend to finally get it done! This is a very doable version for beginners, and is a somewhat affordable project that you can use with family or friends for years to come. Below is our Step-by-Step DIY for how to build a backyard firepit with minimal time and tools!

how to build an outdoor campfire pit

Supplies:

(For a 43in diameter firepit with 9.5ft diameter gravel circle )
Firepit ring 28in inner diameter  – $87
Concrete Blocks – 44 blocks – 4 layers of 11 blocks $2.5 per block – $110
Paver base – 12 bags – $6.5 per bag – $78
Standard gravel – 6 bags – $5 per bag – $30
Kolorscape Sand Pebbles  – 13 bags $5.75 per bag – $75
Optional tool: Hand Tamper
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Total cost: $380

Step 1: Mark Your Firepit Layout

Start by choosing your ideal spot in your yard — ideally a flat, open area away from trees and structures.

  • Drive a stake into the center of where you want the firepit to go.
  • Tie a string to the stake and use it to trace a circle with marking paint. This will be the outer edge of your firepit area.
  • Make sure the circle is the size you want before moving on.

Pro tip: Most backyard firepits range from 36–48 inches in diameter.

Step 2: Clear and Level the Ground

With your circle marked, it’s time to prep the area:

  • Remove grass, rocks, and debris from inside the circle.
  • Dig down 2–3 inches below ground level.
  • Use a long level and a straight board (like a 2×4) to make sure the entire base is as flat as possible.

A level foundation ensures that your firepit is stable and safe once it’s built.

Step 3: Add a Drainage Hole

To avoid a soggy firepit after a rainstorm, you’ll need to give water somewhere to go:

  • Dig a hole in the center of the circle, about 12 inches wide and 12 inches deep.
  • Fill it to ground level with gravel.

This simple step helps your firepit drain properly and stay dry.

Step 4: Spread and Tamp a Paver Base

Now it’s time to build a stable foundation:

  • Spread a 1-inch layer of paver base over the entire floor of your firepit area.
  • Use a straight 2×4 to screed the surface evenly.
  • Compact the base with a hand tamper, checking frequently for level.

Pay extra attention to the outer edge where your firepit walls will go — a level ring here is key for a solid build.

Step 5: Build the Firepit Walls

This is where the magic starts to take shape:

  • Place your metal firepit ring in the center to guide your layout.
  • Lay the first row of firepit blocks tightly around the ring.
  • Once the first layer is complete and level, remove the ring and stack additional layers of blocks as needed (typically 3–4 layers high).
  • Insert the metal ring back into place once your walls are complete.

Tip: Many DIY firepit kits include blocks and a metal ring that fit perfectly together.

Step 6: Fill the Interior with Gravel

To protect the firepit walls from heat and improve airflow:

  • Fill the interior of your firepit with several inches of gravel, stopping just below the fire ring.
  • This layer helps with heat distribution and keeps your firepit in top shape over time.

Step 7: Add Finishing Touches

To give your firepit a polished, professional look:

  • Spread 1–2 inches of decorative gravel around the outside of the firepit.
  • Tamp the gravel down evenly for a clean and cohesive surface.

This creates a safe, fire-resistant zone around the pit!

how to build a campfire pit
how to build an outdoor campfire pit

This ended up being a whole family project as all of the kids wanted to help. It was a good one to get them involved in even though it may have extended the time to get it done;) We have already used this spot multiple times! We want to remove some of the plants to make a spot for a few more chairs, and eventually we may add pavers!

We hope this was helpful, and let us know if you have any questions! We shared a step by step video here in case that helps!

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