Download and upload 3D models, organised by category — architecture, furniture, and more.
SketchUp's official model warehouse, organized by category (architecture, furniture, urban planning) and built around SketchUp's own .skp format.
Deep native integration is the point: models drop straight into SketchUp with no conversion step, and per Trimble's terms they're usable commercially at no cost.
Makes sense almost exclusively for SketchUp users doing architectural or interior work; less useful if your pipeline is Blender or 3ds Max.
Native format is .skp; getting a model into another format means routing through SketchUp itself or a separate converter.