On average, converting a half bath to a full bath takes about 2 to 4 weeks, depending on the scope of work. This includes planning, obtaining permits, and construction. The timeline may be extended if the plumbing or electrical needs to be rerouted or if you encounter any unexpected issues, such as structural repairs. To stay on schedule, maintain open communication with your contractor, address problems as they arise, and factor in some buffer time for inspections or material delays.