Best Under-Pinning/Foundation Stabilization in Plano TX

Olshan did our surface drains on March 19th, 2019. I cannot testify to how well they work just yet since we've had no rain. However, the work looks nice and they made sure to clean everything up well. They installed a channel drain grate in our front sidewalk because we had bad standing water there when it would rain. Initially, they placed the grate too deep causing a tripping hazard. After I expressed my concern with that area they explained that they were trying to ensure that the water would drain better instead of still pooling there. I was still uncomfortable with it so they did raise it so that it would be safe. I am interested to see how it works once it rains. I was assured that if any of the drains did not function optimally they would come back to repair them for free within a year that the work was done. So far I am satisfied.