What is CAD to BIM conversion?+
CAD to BIM conversion is the process of transforming 2D Computer-Aided Design drawings AutoCAD DWG files, PDFs, scanned paper blueprints, or any flat drawing format into intelligent 3D Building Information Models in Autodesk Revit. The converted BIM model is not just a 3D visual it is a parametric digital building where every element carries embedded data including dimensions, material, area, volume, and specification. This data enables automatic quantity takeoffs, cost estimates, clash detection, and construction documentation that flat CAD drawings require manual work to produce.
What file formats does CES accept for conversion?+
CES accepts all major drawing formats for CAD to BIM conversion: AutoCAD DWG (all versions), DXF, PDF construction documents and permit sets, scanned paper drawings and blueprints, hand sketches, IFC files from ArchiCAD and Tekla, Navisworks files, and any other CAD format. If you have a drawing in any format, send it and we will confirm whether conversion is feasible and at what LOD level, within 2 hours of reviewing the files.
What LOD should I request for my conversion?+
LOD 300 is the most commonly requested level it delivers accurate geometry with material specifications, suitable for owner BIM mandates, design development, construction documents, and quantity takeoffs. LOD 300 is also the most cost-effective level for most use cases. LOD 350 is recommended when you need multi-discipline coordination and clash detection. LOD 400 is for fabrication-ready models. If you are unsure which LOD you need, tell us your intended use and CES will recommend the appropriate level.
How long does CAD to BIM conversion take?+
Conversion timelines depend on building complexity, number of floors, disciplines, and LOD level. A single-story residential building converts to LOD 300 in 2-3 business days. A 3-story commercial building with all 3 disciplines converts in 3-5 business days. A large complex multi-story building may take 7-10 business days. CES confirms the exact delivery timeline in your fixed quote within 2 hours of reviewing your CAD files. Rush delivery is available at a premium.
Is a BOQ included in every conversion?+
Yes. CES includes a complete quantity schedule (BOQ) extracted from the converted Revit model elements with every CAD to BIM conversion at no additional charge. The BOQ is in Excel format, organized by discipline and CSI division, with element-level quantity data traceable back to the model. An RSMeans 2026 zip-code cost estimate is also included model quantities priced at current local labor and material rates for your specific project location.
Can CES convert existing building drawings for renovation projects?+
Yes as-built and existing conditions conversion is one of the most common use cases. CES converts legacy AutoCAD drawings, old PDFs, or paper blueprints of existing buildings to Revit as-existing BIM models. Where drawings are unclear or potentially out of date, we note discrepancies and recommend supplementing with site photos. As-built conversion is particularly valuable for renovation, TI, and facility management projects where an accurate existing conditions model is needed before new design work begins.
Can CES convert all three disciplines architectural, structural, and MEP?+
Yes. CES converts all three disciplines architectural, structural, and MEP from CAD drawings to coordinated Revit models. We deliver each discipline as a separate Revit model file (RVT) and as a federated Navisworks model (NWC/NWD) for multi-discipline clash detection. Full 3-discipline conversion is the most requested package and the most cost-effective way to get a complete BIM deliverable from legacy CAD drawings.
Are my CAD drawings and design data confidential?+
Absolutely. CES signs a Non-Disclosure Agreement before opening any CAD file every client, every project, without exception. Your drawings contain your design intent, structural details, and client relationships all completely protected at CES. Your files are never shared, distributed, or used for any purpose other than producing your BIM conversion deliverable.