How to Prepare for Bathroom Remodeling. Getting your bathroom remodeled can be a tiresome job especially as it involves wiring and plumbing aspects.When electricians, plumber and subcontractors are involved in a single project, it becomes quite complicated.Some of the steps are mentioned below for preparation of bathroom remodeling. However, there are certain concepts which you can always share with your contractor to help him with the project design.hen electricians, plumber and subcontractors are involved in a single project, it becomes quite complicated. Some of the steps are mentioned below for preparation of bathroom remodeling. However, there are certain concepts which you can always share with your contractor to help him with the project design.