I’ve seen a couple of designs on other websites recently for steep space-saving stairs. Using those ideas as inspiration I’ve come up with a simple way to build a stairs from a couple of long 2×12’s. The way you achieve such a steep grade is by alternating the steps with the way people actually climb. Not pictured here is the hand rail which would be needed for safety. I’ve also posted the Tiny House Stairs Google SketchUp file for those of you who have installed Google’s free 3D illustration software on your computers.