Painting, faucets, and vanity swaps are safe DIY projects. Plumbing rough-in, electrical circuits, and shower waterproofing require a licensed contractor.
Most US bathroom remodels touching plumbing, electrical, or structure need a permit. See exactly which jobs require one, costs, and the risks of skipping it.
A bathroom remodel contract must include scope of work, payment schedule, timeline, permits, and change order procedures. Here's every clause that protects you.