Armed with state-of-the-art tools and a team deeply experienced in how to use them, Machado Bros Inc is Petaluma's top name for all types of excavation work, including demolition, grading, site preparation, clearing, and many other services. We have been in business for Excavation Work, Demolition Services, Grading, Site Preparation, Site Clearing . When you start a construction project you want a confident and experienced team to tackle your project.