Plumber: Use your bathroom size to determine your vanity size

By Ed Del Grande
Tribune News Service
The key factor in determining the size of your new vanity is your bathroom size. (Kohler)

 Dear Ed: We want to gain some bathroom storage and plan to remove our pedestal sink to install a new vanity base and top. In general, what cabinet base size should we consider when replacing an existing sink?

— Tony, Rhode Island

Dear Tony: First, because you’re replacing an existing sink, you may want to choose a simple box vanity without drawers or shelving. Since existing drain and water lines are roughed-in for a pedestal sink, an open base can give you extra room to reconnect the plumbing.

Now for the vanity base size recommendations. When replacing a single wall-hung or pedestal sink, in most cases your choice options will fall in the small to midsize categories.

The key factor is your bathroom size. If you have a tight fit, a smaller vanity base like 24 inches wide may be a good option. For larger family-use bathrooms, a midsize 30- to 36-inch-wide base may be your best fit.

Bottom line: When installing a vanity base and sink, don’t overwhelm or underwhelm the sink area space in your bathroom … size does matter.


Master Contractor/Plumber Ed Del Grande is  author of the book “Ed Del Grande’s House Call,” the host of TV and Internet shows, and a LEED green associate. Visit or write