In cities across the U.S., one of the most potent forces for urban renewal is the intrepid, resourceful, indefatigable artist. A building full of them, in fact. But for the artists, there isn’t always a happy ending. In case you’re unfamiliar with the story, it goes like this. In search of inexpensive spaces in which work, artists seek out underutilized buildings—often, old warehouses or other industrial structures in sketchy neighborhoods—with low rents, zero amenities, and lots of room to make messes and masterpieces.