I understand that the code calls for at least one 20a circuit to supply the bathroom receptacle outlet(s), Does this mean each bathroom or can the one required circuit supply multiple bathrooms ?
This is a design issue as to the choice you make, you have two.
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<font size="2" face="Verdana, Helvetica, sans-serif">You may connect as many bathrooms as you desire to the same 20 ampere circuit but the receptacle outlets are the only loads that may be on the circuit.</font>
<font size="2" face="Verdana, Helvetica, sans-serif">You may put anything you wish on the 20 ampere bathroom circuit but a separate circuit must be run to each bathroom.</font>
I believe we are talking about a bathroom for dwelling units, not public bathrooms, like for a restaruant. It is to my understanding that a restaruant bathroom can be on a regular receptacle circuit, that can include receptacles not located in the bathroom.