Pierce says heights typically range "from 32 to 36 inches from the floor ... a vessel sink," Upton says. A vessel sink looks like a bowl that sits on top of the vanity countertop.

Vessel sinks may need a wall-mounted faucet or a countertop-mounted faucet with a spout that's tall enough to reach over the sink. If you're just replacing the sink, your vanity and countertop may ...