MaRS BIM is Providing CAD to BIM Conversion Services in USA. CAD to BIM conversion services help companies and organizations to create accurate models of a building. This can help them detect problems early in the design process, as the digital representation of a building's final design is more realistic. BIM models have many advantages over CAD designs and are particularly valuable for renovation and reconstruction projects. These conversion services provide accurate CAD files that meet specifications and construction codes.