1. Concretum Operis, INC
- 44 hires
- Serves Kensington, CA
- Responds in about 55 minutes
- Background checked
Jay Z. says, “Don is a highly professional contractor—smart and efficient. He brought in the right engineer, Ken, to assess the safety of my existing terrace retaining wall. Ken also helped inquire with the city about whether the wall required a permit. Together, they spent time exploring solutions for the wall.”