How To Install Bathroom Vanity. Use a level to draw a level line at the marked height. Measure the height of the vanity cabinet not including the countertop and transfer this dimension to the back wall and sidewall as applicable.

Use a level to draw a level line at the marked height. Grip your counter on two opposite sides and lift it up. Hold it over the vanity cabinets.
If it s not level shim the bottom of it with small wooden shims.
Measure the height of the vanity cabinet not including the countertop and transfer this dimension to the back wall and sidewall as applicable. This video from bunnings warehouse will show you everything you need to know to install a bathroom vanity yourself including where to position it and how to. You can use an electronic stud finder to accomplish this task. Use a level to draw a level line at the marked height.