This doesn't answer the question. Since the work was all done under one LLC, obviously there is only one "business" so it could all go on one schedule C, but the OP was asking if they should do that or put each "activity" on a separate schedule C.
I have a similar business setup to the OP - I created an LLC and run several different business "divisions" under it. By having everything under the umbrella of one company, the losses in one division can offset the gains of another, whereas if they are separate LLCs, you could not do that, also if you have an entity that posts a loss year after year, you can only do that for so long if it is on its own schedule C.
I am running into a similar problem with the OP; my business operations are so diverse that it is a bookkeeping challenge to keep everything separate, so I was wondering the same thing - can separate schedule Cs be filed for the same EIN?
