Are there other factors that can affect how my bathroom renovation unfolds?

The age of the home and the last time the bathroom was renovated could determine whether you need to upgrade the electrical or plumbing. As well, materials chosen for the project could affect how long the project takes to complete. A good example of this would be a solid surface counter top. The top has to be templated after the vanity is installed. This generally adds a couple of weeks to the renovation process.