The Master Builders of Iowa (MBI) has a century-long legacy in the project information space. Our roots trace back to 1918 with a statewide plan exchange, and we’ve evolved alongside the construction industry itself—from physical plan rooms to the powerful digital tools used today. While technology has advanced, one thing has never changed: MBI’s unwavering commitment to strong relationships with design professionals, owner representatives, and Iowa’s contracting community.
MBI Source1 builds on that foundation by leveraging advanced AI technology to collect and organize project information efficiently and comprehensively. Yet technology is only part of what makes it different. Our Iowa-based team ensures every project detail is accurate, clear, and supported with responsive, personal service. When you have a question, you won’t be routed to an out-of-state or country call center—you’ll connect with a knowledgeable professional right here in Iowa. Yes, our phone number starts with 515, and so does our commitment to service.
MBI Source1 launches on August 1, 2026, and we’re dedicated to keeping you informed every step of the way as we build out this new platform. For any questions, please direct them to MBI Source1 Manager Adam DoBraska at adobraska@mbi.build.
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