In new home construction, I typically do work during the rough building of the home and then again when its time to finish the house. Usually I bill 80% after the rough and the remaining after the finish. Should I be sending 2 preliminary notices and intent to liens or how exactly should I be doing this? What if the house takes longer than 120 days to finish? If I've been paid for the rough and the 120 days passes, how would I go about filling for the trim?