Over at splash I see a lot of people don't have to supply HVAC and/or plumbing layouts with their plans. My projects aren't big enough to include a mechanical engineer. In ACAD, I have always just drawn a 2D plan over the existing floorplan for both HVAC & Plumbing. The local permit office doesn't require much detail. For plumbing we just have to show the main drain direction and where everything will tie in from each fixtures. The HVAC plan only has to show the airhandler location, return air location, ducts, and register location. I also have to noted that bathroom and kitchen vents must vent outside the home. Pretty simple stuff, but I am hoping I can tackle this in Softplan. I would love to eventually shelve ACAD all together.