I just finished the rough on the remodel project from hell. In the end I was glad I hadn't bid the job. We did it T&M, if I had bid the job I would've lost big time because it was much worse than I thought.

Sometimes you can look at a project a "see" exactly what it will take, other times you can't. If I can't, I do T&M only and try not to even guestimate because it will come back to you if you go way over. If the contractor won't do T&M, walk or bid so high you think they'll laugh at you. You'd be suprised how many "I don't want this job" bids I actually win. Good Luck.