Speaking of tiny living spaces, here's a contractor's special that's actually not so bad: this little red-doored, 920-square-foot cottage at 1842 10th Ave. has 2 bedrooms, 1 bath, and three unwarranted rooms down. Three? Oh, and an unfinished (but large!) attic. OK, so maybe it is a contractor's special. Don't forget, though: location, location, etc— this baby has views of the Golden Gate Bridge, the bay, and Twin Peaks. Question is, at about three times the square footage of your average Cubix condo, how much would you pay?