How to Build a DIY Fire Pit in Your Backyard (Weekend Project)
A backyard fire pit is one of the highest-impact yard upgrades you can do in a single weekend. It creates a gathering spot, extends your outdoor season into cooler months, and costs a fraction of what a contractor would charge.
Before You Start
Check Local Regulations
Most municipalities have rules about open fires. Check your local fire code for:
- Minimum distance from structures (usually 10–25 feet)
- Size limits (many cap at 3 feet diameter)
- Fuel restrictions (some areas ban wood fires)
- Permit requirements
Choose Your Location
- At least 10 feet from any structure, fence, or overhang
- Away from low-hanging branches and dry vegetation
- On level ground — you’ll be glad you took time to level the base
- Downwind from your usual seating area (check prevailing wind direction)
Materials You’ll Need
For a basic 36-inch stone fire pit:
- 36 retaining wall blocks (approximately $3–5 each)
- Gravel for the base (about 4 bags of pea gravel)
- Fire-rated adhesive (landscape block adhesive)
- Sand for leveling
Total cost: $120–$200
Browse fire pit block kits on Amazon
Step-by-Step Build
Step 1: Mark Your Circle
Use a stake, string, and spray paint to mark a circle about 44 inches in diameter (the outer edge of your blocks). This gives you a roughly 36-inch interior opening.
Step 2: Dig the Base
Excavate 6 inches deep within your circle. This creates a stable base and keeps the fire pit low-profile.
Step 3: Add a Gravel Base
Pour 3–4 inches of gravel into the hole and tamp it flat. This provides drainage and a stable foundation.
Step 4: Lay the First Course
Set your first ring of blocks on the gravel, checking level as you go. This is the most important ring — take your time.
Step 5: Stack Additional Courses
Apply landscape adhesive between courses and stack 2–3 more rings. Offset the joints like brickwork for stability.
Step 6: Add Interior Gravel
Pour 2 inches of pea gravel inside the pit for drainage and to create a base for your fire.
Step 7: Let It Cure
Give the adhesive 24 hours to set before lighting your first fire.
Fire Pit Accessories
Once you’ve built the pit, add these for a better experience:
- Fire pit grate — Elevates wood for better airflow and cleaner burns
- Spark screen — Keeps embers contained
- Fire pit cover — Protects from rain when not in use
- Firewood rack — Keeps wood dry and organized nearby
Browse fire pit accessories on Amazon
Safety Reminders
- Keep a garden hose or fire extinguisher nearby
- Never use gasoline or lighter fluid to start a fire pit fire
- Fully extinguish fires before leaving — drown, stir, and drown again
- Don’t burn treated lumber, trash, or yard waste (check local rules)
Related Reading
- Best Outdoor Fire Pits — Pre-built options if you’d rather skip the DIY
- Best Outdoor String Lights — Set the mood around your new pit
- Best Patio Furniture Sets — Comfortable seating for fire pit nights
Planning more backyard projects? LifeStarter has new homeowner checklists and budget tools to help you prioritize upgrades.