Sunken Stoop and sidewalk is raised using Polylevel Injection, in Dayton, OH.

In the before photo, you can see a space between the trim of the stoop and the concrete slab.  You can also see where the concrete sidewalk has sunk and pulled away from the step.  We used Polylevel Injection to raise the plate.  The space between the trim and concrete is now gone, and the sidewalk is level to the step.