Welcome. I have a 3-car garage that is about 20ft deep and I can't remember how wide. In the beginning, I thought I'll be able to finish this boat and keep a car in here easily. If I had been been neater, that would have been easy. But, at one point, I had stuff everywhere: wood, hardware, big 90HP ETEC motor, shop crane, saws, tables, saw horses, etc, Then I had to move the trailer in the garage, so I would not be in violation of community covenants (out went my wife's car). Then, I moved the boat from the building cradle to the trailer and that made things better. But, I would up using that building cradle to hold more crap! Oh, luckily my trailer had a swing-away tongue. That was a big deal in the end. I am keeping the boat in my garage now that it is finished until spring. Even though my garage is 20ft deep, the door barely clears the folded tongue. You can build a smaller (14ft - 16ft) outboard powered boat and have lots of interior seating space. But once you hang that engine on the back, you lose a couple of feet of construction space and even more once it's on a trailer. You can do it in a smaller space than I have. You just need to be organized and clean up on a regular basis. Last year and the year before were really, really cold, even here in GA. Weather...not just rain is another thing you have to consider.