Welcome to the new Bear Mountain Builders Forum - an interactive internet service we provide to encourage communication between canoe and kayak builders
The least amount of space you will need is 4 feet all around the project. More is really nice but this should be enough to maneuver around the form. I am building a 21 foot double in a 24 foot long room. We are right up to the wall on the stern and go around the bow to put on strips. Lots of fun.
Regards, Erich