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

1
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.

2
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.

3
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.

4
Install faucet
Install faucet - Install Bath Vanity

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

5
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.

6
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.