A written timeline forces everyone to think realistically about the sequence of work. Instead of a vague “it’ll take about two months,” you get a rough idea of what happens when: demolition, plumbing, electrical, flooring, carpentry, painting, finishing.
This helps you plan your life – when you might need to move out, when key decisions are due, when big payments will be requested. It also gives you a reference point. If things slip, you have something concrete to discuss: “We planned tiles this week; what changed?”
A timeline also reveals whether the contractor is organised. Someone who refuses to put anything in writing or constantly dodges dates might not be great at managing projects.
Of course, timelines can shift. But even a flexible written plan is better than no plan at all. It shows respect for your time and money.