I've lived places where I have only had a 4ft by 8ft place to work. It was on the ground floor, next to a 2-car carport. I stored everything inside, then pulled it all onto the carport to work, then put it all back when done. I have a two-car garage and I still occassionally set up the table saw on the back patio to cut larger pieces of wood.
Build yourself a small, sturdy workbench with wheels. Make it narrow enough to easily get through any door (28") and short enough to move easily. Here is how I took care of the mobility problem with mine. The wheels are only on one end, so you can lift the other end of the bench and move it like a wheelbarrow...
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Here, you see the top of the bench (on the left) that I built many years ago to fit in that 4'x8' storage area...
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If you have friends you trust, you could go in together on renting a small house. Even if it doesn't have a garage, you could likely get the owner to let you keep a 10'x12' shed in the back.
As long as you are not actually using saws, you can set up a room in an apartment or a house to work in. Cut your parts outside on the patio and take them inside to clamp and assemble. Painting and finishing can be done on a back patio or an apartment deck.
Whatever you choose won't necessarily be easy, but in the end, it will be worth it. There is nothing like being able to look at something and say, "I built that." You basically have to start thinking, "How can I make this work?"
Good luck.
M_P