I will agree, there is not much collateral value to this scheme. I built mine hand to mouth and where it really shined was once I got past that point the overhead was so low and so convenient. I could really detail my traffic flow, route it past my utilities, phone, message, snacks, coffee bathrooms, office, sleep all one spot, simple and burn a couple 3 small cfl lamps and switched lighting only where I was using it.
I married, moved into another available unit I had across the street and the shop is not occupied 24/7 but it is still handy, I store some stuff up there don't use the bedroom and only occasionally shower there but its still nice to have my private bathroom when spending time there. I have a downstairs "public bathroom" in office we use when we need to or for women, have the urinal and sink on other side of building that receives about 95% of the business which enables fairly easy maintenance of the floor bathroom.
A super big decision is the floor plan door locations. I see many owners expressing ideas to a contractor that wants to agree with them that doors are everything imo. We drew a traffic flow on a plan view. For the most part with modern construction I am still amazed people put the doors in the sides of many buildings that there is no need for. In any kind of crappy climate doors in front. I see a lot of 2 car garages that should have been 3 wide, 2 doors with walk door in gable end and bench/tool boxes along wall near entrance. My bud built one 30x40, nice enough thing with 2 doors on one end and entrance on other. Besides the fact that the elevation was too low it should have been 36 or 40X40, with stuff along the walls it crowded 2 cars wide to do any work. 40 was fundamentally long enough to have benches tools up front, never did move a noisy azz air comp but I think in hindsight he would have taken a little advice, spent up a pinch especially when he end up working out of it for a number of years.
