Turn off the water supply
Disconnect the old sink and faucet if replacing one
Remove the old sink from the vanity or wall
Clean the installation area
Check that the new sink fits the opening
Install the faucet and drain assembly on the sink
Apply plumber’s putty or silicone where needed
Position the sink in place
Secure the sink with clips, brackets, or mounting hardware
Connect the water supply lines to the faucet
Connect the drain assembly and P-trap
Tighten all connections
Turn on the water supply
Check for leaks
Seal the edges with silicone if needed
Test the faucet and drain operation