Rough-in is a construction term for a partial installation. For example an electrical rough-in means all the wires are pulled and boxes are in place, but there are no switches, receptacles or fixtures. If you need a rough-in perhaps you have a piece of equipment that is not properly connected? Hard to say.
Pretty much waht Lobo says, like a bathroom is framed but no piping or electrical. When a bathroom is stated to be rough-in means framed, piped, wired, but no sheetrock, tile, or finished. In your case it maybe have basic framing, but no wall frames or electrical.
Sorry,,, My wife and I are building a house, we have a bonus room over the garage and the builder says they are going to Rough-in the room. So, I wanted to ask someone on here what a definition of Rough-in meant... I can finish the room later but needed to know if heat/air being connected is considered Rough-in.
Typically the only provision for heating and air is to run a conduit for coolant lines to a separate fan unit in this "future finished area" and a "home run" electrical wire for the unit back to the electrical panel. You need to discuss this with your builder now, its much easier to make sure things are in place now rather than later.
In the Southeast Michigan Real Estate market, a roughed in bonus room over the garage typically implies it's framed for a room, instead of standing rafters, typically has a rough floor laid and a "legal" access to the space is in place. Needs full wiring, drywall and finishes. Also wheather tight,of course.