Groundbreaking is scheduled for tomorrow! It should take three months. We have actually been working on this since May. I never imagined it would take most of the summer to get to the point where we would be ready to start! Drawing the plan, getting the informal plans done into technical blueprints, bids from four different contractors, then making a selection and negotiating a contract. Whew!
I used Google's SketchUp for the initial design. It's a great program (and FREE!) and really helped us to work out how the space would look and what size we needed.
Here's our sketch, with our house on the left and Mom's apartment on the right. She'll have her own entrance and porch area. I'm planning on sharing as we go.