Most of the time, a perfectly executed construction schedule can make it possible for you to get around the need for a second toilet or sink. However, it is always a good idea to have a back-up plan. Renting a portable toilet is a good option. If a portable toilet is not an option, make sure you have a friend or family member nearby that you can stay with if the unexpected occurs.
This may seem obvious, but many people overlook just how important it is to properly plan for the remodeling project before you begin any construction. Make sure to obtain builing permits before you begin your project. Much better to have building permits in order beforehand than cause a delay in work. I also strongly encourage you to meet with your contractor shortly before construction begins to discuss the schedule together. This helps to ensure everyone is on the same schedule and avoid possible delays. Don’t start your project until everybody is on board with a solid design plan and a strict schedule. Of course there’s no way to guarantee a completely hitch-free remodel, but there’s no reason not to do everything you can to get as close to one as possible.