How to Replace a Bathroom Vanity

Replacing a bathroom vanity is one of the more approachable bathroom upgrades, especially if the new vanity's plumbing connections line up close to the old one's. Here's the general process. (Haven't measured your space yet? Start with our vanity measuring guide.)

1. Shut Off Water and Disconnect Plumbing

Turn off the water supply valves under the sink, disconnect the supply lines and the P-trap, and have a bucket ready to catch any remaining water in the trap.

2. Remove the Old Vanity

Disconnect the countertop from the cabinet if they're separate pieces, remove any mounting screws securing the cabinet to the wall or floor, and pull the old vanity out.

3. Patch and Prep the Wall and Floor

With the old vanity out, patch any holes, clean the area, and confirm your flooring extends far enough for the new vanity's footprint — especially important if the new one is a different size.

4. Position and Level the New Vanity

Set the new vanity in place, use a level to check it sits flat, and shim underneath if needed before securing it to the wall studs.

5. Reconnect Plumbing and the Countertop

Reconnect the P-trap and supply lines, install the countertop and sink if they weren't pre-attached, and turn the water back on to check for leaks.

What to Check Before You Buy

• Measure your existing plumbing rough-in locations against the new vanity's cabinet layout
• Confirm the new vanity's width fits your available wall space with clearance for doors and drawers to open
• Decide between a vanity with a top already installed versus buying the cabinet and countertop separately

Browse our full vanity collection to find your next bathroom vanity.