With a bathroom renovation you can do it yourself and contract out some of the work yourself. But remember you’ll need permits and must work with all sub-contractors and their work schedules. This can be a big headache! Hiring a general contractor moves your renovation along smoothly and usually can eliminate any delays. You can save money if you want to do the demolition before the contractor starts. Be sure to talk this over with your contractor to see how much you will actually save for your time and trouble.