How can small construction crews avoid working for nothing when quoting for jobs?

The biggest fear for small crews is thinking a project is simple at the start and quoting too tightly. If material costs rise a bit, the schedule drags on for a few days, or the client makes last-minute changes, all the labor profit gets wiped out. I now prefer to write the scope in detail upfront—what's included and what's extra—otherwise, it's hard to bring up later. When you quote for small…