How to Install a Bathroom Vanity

Learn how to install a bathroom vanity yourself for a simple bathroom upgrade

2-4 hours

A new bath vanity can add style to your bath décor, and may also provide more storage and counter space. This project guide outlines the steps you can follow when replacing a bathroom vanity or installing small bathroom vanities. 

Tip: Remember to allow for more bathroom space when installing bathroom vanities with tops or a double sink vanity.

What You Need

place the vanity
Put vanity in place - Install Bath Vanity

• Put the vanity in place and trace the outline on the wall.
• Use a stud finder to locate the studs and mark.

Tip: Double vanities require more space and plumbing considerations when installing. Consult manufacturer's instructions for details. If you're installing a bath vanity with top, include the countertop in your measurements.

Measure and mark holes
Measure, mark and drill - Install Bath Vanity

• Position the vanity into place.
• Level vanity and shim at the floor if necessary. Hold level against the edge until it’s plumb.
• Measure, mark and drill holes for drain and supply pipes.

Tip: If you're installing a vanity without a top, you must also measure for the bathroom countertop you’ll be installing later. Measure the cabinet’s depth and width, adding one inch to each measurement for the top.

attach to wall
Attach using 3 inch - Install Bath Vanity

• Attach the vanity to the wall using 3-inch drywall screws.
• Check for level again before trimming the shims with a utility knife. 
• If there are large gaps at the wall or floor, attach quarter-round moulding along the wall or floor edge with finishing nails.

Install faucet
Install faucet - Install Bath Vanity

Follow manufacturer’s instructions and install and secure the bath faucet to the vanity top.

Secure vanity top
Secure vanity top - Install Bath Vanity

• Dry-fit the vanity top over the vanity.
• Make sure the wall is straight and there are no gaps between the wall and vanity.
• Follow the manufacturer’s instructions to secure vanity top to vanity.
• Apply silicone caulk to the top of the cabinet before vanity top is set into position and firmly press down.
• Check to make sure vanity top is level and flush to the wall.
• Add backsplash and sides splash if necessary.

Reconnect water supply
Reconnect water supply - Install Bath Vanity

• Reconnect the faucet supply lines to the water supply and reconnect the trap.
• Turn on the water supply and test for leaks.
• Install the pop-up drain.