No less than 17 and no more than 25 inches of clear floor space should extend under a toilet room sink.
The leading edge of the sink should be no more than 34 inches above the floor.
There should be at least 27 inches clearance from the floor to the bottom of the lavatory that extends at least 8 inches under the sink for knee clearance.
There should be toe clearance that is at least 9 inches high under toilet room lavatories Note – Space extending greater than 6 inches beyond the available toe clearance at 9 inches above the floor is not considered toe clearance.
The pipes below a bathroom sink should be insulated or otherwise configured to protect against contact.