Hi,
I just have a quick question if I might have missed this.
Is there an OOTB node for selecting specific objects within Civil 3D Modelspace that I specify in Dynamo?
Pretty much exactly what this node from The Civil Nodes does. Obviously I can, and do, use this node. But I usually try to minimize the number of Packages that are required since that makes the barrier to entry for using the scripts a lot lower for my colleagues.
Under the AutoCAD node groups, you have 3 options for selection: Pick Point, Select Object, Select Objects.
One of these two should be what you’re looking for.
There are also several nodes under the Civil 3D\Selection for directly selecting civil objects, if those could further help:
These are in Civil 3D 2025 and 2026. Some of the nodes were added in 2025 and aren’t available in previous versions.
Thanks for the answer but the question isn’t how to select objects so that I can work with them within Dynamo.
I want to know if there is an out of the box solution for creating a selection set in Civil 3D for the objects that Dynamo has produced.
Ah, I misunderstood 
I do not know of one, unfortunately 
I don’t think so, but I’m almost sure you could mimic it using python. Just don’t know if it’s worth it…