You can, but go in with low expectations. Be ready for dust, noise, subcontractor scheduling delays, and a constant flow of trades through your home. Plumbers and other subs sometimes shift schedules, and a good contractor builds buffer time into the schedule for that reason. The smaller the scope (a single bathroom, for example), the easier it is to live through. Whole-home remodels are significantly harder and most clients choose to relocate for part of the project.