Concrete mix (20 pounds of concrete mix per 0.15 cubic feet)
Compactable gravel mix or concrete debris
Compactable soil
Two pieces of 3/4-inch plywood
2-inch by 8-inch lumber
2-inch by 4-inch lumber
2-inch by 2-inch lumber for staking
Rebar
Rebar loop ties
2-inch wood screws
2.5-inch wood screws
Concrete release agent spray
4mil to 6mil plastic sheet (optional)
Concrete curing compound (optional)
Concrete steps add long-lasting character to your home entryway, but they don’t last forever. Building concrete steps is a big job, but it’s within reach of accomplished DIYers with a weekend to spare and some specialty tools. Follow along to learn how to build a simple set of concrete steps.
Prepare to Build Concrete Steps
Before proceeding, check with your city’s building permit department to determine if you need a building permit. It’s essential to get one if your city or town requires it and understand the building code that applies to your project.
With a permit in hand, you can demolish and remove the old steps, if that applies. Depending on the building code in your area, you may need to replace or install new flashing or other house protection before building new steps. You may have to anchor the new concrete steps to the home’s foundation in some locales. Local codes for stairs vary by geographic location, so it’s best to contact your local building and safety department for compliance requirements.
Plan the Number and Size of Your Steps
Photo: andrey gonchar / Adobe Stock
Get out a measuring tape and a piece of paper to draw a detailed mock-up of the steps you want to build. Plan out the rise and run of your stairs. The rise is the height, and the run is the depth steps. You also want to determine how wide your steps will be.
Calculate the Rise
Determine the total rise (overall height) of the steps in inches. Measure from where you want the steps to start and where you want them to end (such as to meet with the floor of your porch). Divide the height by 7.75 inches, the maximum height each riser can be. Round down to the nearest whole number to calculate the number of steps since the last riser will reach the floor, not another step. Take the total rise and divide by the number of steps to determine your rise per step.
Determine the Run
Measure the run (overall distance) the steps will cover. Divide the total run by the number of steps to get the run for each step. Each step must measure at least 11 inches deep for stairs without a nosing. The top step or landing must be at least 36 inches deep by 36 inches wide.
Create a Form
Draw the rise and run dimensions on a 3/4-inch piece of plywood. You’ll use the plywood as one side of the steps and as a landing form.
Create a Solid Base
Photo: electra kay-smith / Adobe Stock
To ensure your new steps stay level and aren’t prone to cracking due to ground movement, you’ll need to create a firm base.
Stake Out the Step Area
Using your staircase's depth and width measurements, stake out and mark with a mason’s line an outline of its footprint where it will rest on the ground. Check your outline for square by measuring from each corner to its opposite corner and ensuring the measurements are equal.
Remove the soil in the outline plus a couple of inches in each direction to a depth of 4 to 6 inches.
Fill the Base
Fill the void with compactable gravel or sand. Tamp it down with a hand tamper.
Cut the Forms
Photo: Melinda Fawver / Adobe Stock
Much concrete work requires excellent carpentry skills. Work slowly and carefully when cutting your forms. Any mistakes in this step will show up in the poured concrete when it’s more difficult to fix.
Create the Second Side Form
Sandwich the second piece of 3/4-inch plywood to the first with your template drawing facing up. Attach the pieces together with a few temporary wood screws. With a circular saw, cut out the side form shape from the plywood.
Cut Risers
For each riser, cut a 2-inch by 8-inch board to 1 1/2 inches longer than the width of your staircase. With a circular saw or table saw, rip each riser to the individual riser height. It’s helpful to rip the boards with a 45-degree blade angle, though it’s not necessary. Leave one riser without a 45-degree angle cut.
Build the Forms
Concrete is heavy and will distort forms that aren’t secure. Be sure your forms are well-anchored when this step is complete.
Attach the Risers to the Side Forms
Stand the plywood side form up on its bottom edge. With 2 1/2-inch screws, attach the end of the riser without a 45-degree angle to the edge of the plywood. Attach the other end of the riser to the other plywood side form. Attach the second riser to the next riser position in the form with 2 1/2-inch screws. Place the rise with the 45-degree angle facing down and out. Continue with subsequent risers until complete.
Ensure the Forms and Risers are Level and Square
Check to ensure that the side form plywood pieces are plumb and level. Install three 2-inch by 2-inch stakes along the bottom of each form. Attach each stake to the form with 2-inch screws.
Place Stakes in the Ground
Drive two 2-by-2 stakes into the ground on all three sides of the steps (you may need more for the front side). Create support abutments between each stake and the form using 2-inch by 2-inch boards. Securely attach the boards to the stakes and the form.
Add Soil or Rubble Fill
For staircases taller than a single riser, you can use compactable soil or rubble to partially fill the void between the ground and the concrete within the forms. If you have rubble from the demolition of the old stairs, mix it with compactable soil and use it as fill.
Fill the area and tamp often. Allow at least 4 inches of clearance from any form board.
Place the Rebar
Photo: Lomiso / Adobe Stock
Rebar reinforces your concrete work for a long lifespan. Cut rebar to length with a grinder and metal cutting blade. Install a 12-inch by 12-inch framework of rebar inside the form. Tie each intersection together with rebar ties by twisting the ties with pliers. Allow at least 2 inches between any piece of rebar and the form lumber.
For this step, you’ll need to either rent a cement mixer from a home center or have mixed concrete delivered.
Calculate the Amount of Concrete
Determine how much concrete you’ll need to mix or purchase. You’ll need 20 pounds of concrete mix per 0.15 cubic feet of stair volume. Knowing ahead of time how much you need and how much concrete costs can ensure you don’t have to make a run to the hardware store in the middle of the project. Using a consistent mixture across the project also allows for a uniform look and less potential cracking.
Prep and Pour the Concrete
Spray the inside surface of the forms with a concrete release agent. Mix and pour concrete into the form. Tap the sides and front of the forms with a hammer to reduce voids as you pour the concrete. The more hammering, the better.
Bring the steps to life by screeding and floating the concrete, starting with the top landing to make it level. Create smooth corners with an edging trowel. Trowel the landing and steps until smooth.
Allow the concrete to rest for several minutes until there’s no water on the surface. Then, brush the concrete to create a rough surface for foot traction.
Remove the Forms
Allow your steps to sit untouched for several hours until you can no longer press your hand into the surface before removing forms. Then, unscrew and remove the riser forms from the side forms.
You may need to mix a small amount of concrete to fill any voids left behind. Trowel smooth with a rubber float and brush in some texture if you like. Remove the side forms and stakes. Trowel and add texture as you like.
Cure and Seal the Concrete Steps
Proper curing is essential to avoid cracks in fresh concrete. Use one of the following methods to slow down evaporation so your concrete can cure correctly:
- Beginning several hours after pouring, spray the entire surface eight to ten times per day for one week. Use a garden hose with a gentle spray nozzle.
- Apply concrete curing compound spray following the manufacturer's instructions.
- Cover the entire project with a 4 mil or thicker plastic sheet.
Seal your concrete with a high-quality acrylic or siloxane or silane sealer. Sealer helps the concrete hold up to weather conditions and normal wear and tear. The cost to seal concrete yourself ranges from $0.10 to $0.75 per square foot.
DIY vs. Hiring a Pro
We only recommend pouring concrete steps if you have solid DIY skills and experience. Working with concrete requires using specific tools that may prove too expensive if you’ll only use them for this project.
The cost of supplies for installing concrete steps on your own is between $350 and $550, one weekend, and tool rental or purchase cost. The cost of concrete step installation starts at around $900. A concrete company near you can also provide design ideas and a warranty.
Yes, concrete steps need rebar to reinforce the structure and ensure it can hold weight over time. Place a lattice of rebar inside the form before pouring concrete to give the steps their maximum strength. Tie each intersection together with rebar ties to hold the structure all together. Without rebar, concrete steps can sink, crumble, and lose their longevity.
Concrete steps need concrete footings, which is a type of foundation. They are made of concrete with rebar reinforcement poured into a trench. The footings support the stairs, spread the vertical load, and prevent the steps from sinking. Footings need to be below the maximum depth that the ground freezes, typically at least 42 inches in depth.
Concrete should be at least 4 inches thick for steps. This thickness boosts stability and prevents cracking and deterioration. After you’ve built your forms out of wood, fill the void with a sand or gravel base for concrete. Use an all-purpose concrete mix to form your steps. After pouring your concrete steps, be sure to screed and float the concrete.
Matt DiBara is the owner of Dibara Masonry in Los Angeles. He has worked on high-end and celebrity homes, and he’s also a licensed general contractor who’s well-versed in all areas of construction.
Matt DiBara is the owner of Dibara Masonry in Los Angeles. He has worked on high-end and celebrity homes, and he’s also a licensed general contractor who’s well-versed in all areas of construction.
The homeowners guide to Concrete Driveways
From average costs to expert advice, get all the answers you need to get your job done.
