No, you don't need a plumber to install a bathroom vanity. However, it's always a good idea to enlist the help of a professional to make sure the installation goes smoothly. Vanity installation can be tricky, and there are certain things you need to take into account (like plumbing and electrical wiring). By hiring a professional, you can rest assured that the job will be done right and that you won't run into any problems down the road.

No, you don't need a plumber to install a bathroom vanity. However, it's always a good idea to have a professional do the installation for you, just in case there are any unforeseen problems or complications. Vanity installation is not a DIY project for the faint of heart!