Dion was referred to me by my structural engineer, so I knew to expect quality work from a professional. It was a big job that included excavating the front yard, constructing a new basement walkout, new front porch, stone steps, interlocking walkways and a retaining wall. Dion provided a detailed and competitive estimate for each major part of the project, and the final price was exactly in line with that. He was always available before, during and after the project was completed, for any questions or assistance needed. The team working on the project (Sergio, Joaquin and Frank) worked well together. They were very meticulous and precise especially with cutting and fitting the stones, and ensuring the grade was appropriately sloped, and both sides of the walkout walls exactly level (to the pleasant surprise of my mason guy, who came later to do brick tuck-pointing on the front facade of my house). We get a lot of pedestrian traffic in front of our house, and there were numerous comments on how great a job Dion's crew did. A number also requested business cards for their various projects. Needless to say, we are very pleased with the end result and definitely recommend Dion and his RockBottom Underpinning team.