Building Plans

I need Auto Cad plans to scale for a home renovation, updating the HVAC (into attic), update electrical (upgrade service, add recessed lighting), new kitchen and 2 new bathrooms (one on main floor and one on lower level), putting in new windows and doors and replacing all the floors. We are staying within the original footprint of the house, but would like to remove a wall in the kitchen area to open up the floor plan.