Fostering relationships with trades
Contractors/vendors are key to the success of the communications & marketing department I work in, so we spend a lot of time on fostering and managing relationships carefully. We even go so far as baking cookies at Christmas. We give a little and get a lot in return. I would suggest the same philosophy is important in home construction. Give a little breathing room on a few deliverables, remember to show your gratitude (food works for the trades too) and, in return, build a great relationship with a tradesperson who will produce a quality product for you. Don't forget to openly admire work that deserves admiration and spread the word to help build their reputation.