One of the challenges we all face is how to move machines into a home without damaging the home, the machinery, or yourself. I actually had to bring things through the front door, and across hardwood floors, and turn 90° to descend the stairs into the shop. To protect the floors, I laid down sheets of 1/2" MDF that I could use later. On the wooden stairs, I used three strips of softwood strapping, held with wood screws to the stairs. I mounted a 2x4 baton to the wall studs at the top of the stairs, with a 5/16-inch eye-bolt through it.
Let’s be clear about one thing: No workshop is perfect for everyone. If there were, I could simply give you a precise plan to follow with clear dimensions. Every person who comes to the hobby, avocation, or profession of woodworking has his own particular collection of tools and his own peculiar work style, skills, and desires for the kind of woodworking he wants to do that gives him a unique approach as to how he will lay out a shop: where the tools should go, where lumber and supplies are stored, and how much bench area he needs.