I decided to build a stand-alone DR and after getting info on city codes, decided to make it conform to within the "shed" structure guidlines.
However I'm building it as I would a live-in structure. The one thing I had to keep to was the sq. footage of the roof area had to be 120 sq. ft. or less.
I will have insulation, solar water heater (outside) and a built in vacuum line (vac outside encased).
I am almost done with the outside, have surpassed my budget by about half what i estimated but hey, I ain't no estimator anyway.
Soon to start the inside.
here's the link to my previous thread though it has come far from there.
http://www.apug.org/forums/forum43/18131-its-not-quite-dark-yet.html
I will update this thread soon when I shingle the roof and get the door installed.
Good luck and keep us posted on what you do..and don't do.
Matt