Don't final attach the tailcone to the cabin area until the last possible minute (i.e., just before you take it to the airport or at the airport). You can store the tailcone in a corner like an aluminum teepee.
I began in a two car garage and was only using one side for almost a year. Eventually the fuselage takes up a whole side and you really end up taking over a lot more space. I put my wings in a local rented storage unit last winter in order to get our cars into our garage. This year my wife finally gave in ... we are hoping for a short snow season!
Two suggestions: Construct storage lofts from garage ceiling if you have the height. Picture in my log doesn't show how large one of mine is very well. Was able to store lots of parts up there. I actually built a second one as well. Used 2X4 frame and some light steel to anchor from ceiling studs.
Jorge ? like yours, the production facility at DOG Aviation is small as well. It is in a small two car garage which I think is not quite 18 x 18 feet. It had no rafters, per say, so I added some to hang lighting, primed parts for drying, ect. At the rear of the shop is a 4 foot deep shelf the width of the shop and is used for the storage of supplies and the rudder, VS, anti servo tabs, etc which can almost be seen on the left wrapped in black movers quilts in the photo below. http://1.bp.blogspot.com/-Qx9qF-UIdcc/UMavNlN_9yI/AAAAAAAACo8/nTAvo5Bo_IY/s1600/DSC03367.JPG
There is a storage shed attached to the back of the shop where the completed tail cone is suspended off the floor by straps in the hopes of keeping it rodent free. If I didn?t have it, the tail cone would be on the shelf as well.
I can?t overstress this enough ? keep everything on wheels! Work benches, parts storage racks, tables, etc. It makes rearranging the shop for various phases of the build much easier and for those days when you just have to do a little housekeeping ? I even keep the Van?s parts crates on small moving dollies from Harbor freight, which makes moving crates by yourself a snap.