Measure the total floor-to-floor height
Determine the desired riser height
Divide the total height by the riser height to find the number of risers
Adjust the riser height so all risers are equal
Calculate the tread depth
Check the stair slope for comfort and code compliance
Determine the total run of the staircase
Mark the stair layout on a stringer board
Cut the stringer accurately
Test-fit the stringer
Install the stringers in position
Attach the risers to the stringers
Attach the treads to the risers and stringers
Install any required landing or intermediate platform
Add handrails and guardrails
Secure all components firmly
Inspect the staircase for level, plumb, and uniformity
Finish the staircase surface as required