My thinking is that I can open the garage door to get plenty of access to one end but the other end will be very close to the back wall. My instinct tells me that the transom should be at the garage door and the bow near the back wall. My concern is the room needed when I am planking. I haven't finalized a decision on this yet but I am leaning towards cold molding the planking rather than plywood sheeting.
The weather is is warm 9 months out of the year so working with the garage door open is no problem. Renting a place to build this boat is a non starter right now, although it will be practical in a year or two (the earliest I expect to be working on the cabin). Looking over the available designs, I really would like to build the 21 footer, so looking for possible solutions at this point.
BTW, extending the garage is not an option either

Carl