We're roughing in the new electrical circuits this weekend. We know that we need either:
1) one dedicated 20A circuit that feeds nothing else but the bathroom
-OR-
2) one 15A circuit for lighting and fan (that can also serve another room) AND one 20A circuit for receptacles that can alos serve another bathroom but nothing else.

We know all receptacles as well as overhead shower lighting must be GFCI protected, and that if we go with option 1 above, at least some overhead lighting should be upstream of the GFCI so it won't go dark if that trips.

Questions:

??????? Do bathroom have the same receptacle requirements as other rooms (i.e. one outlet on each wall, no spot further than 6' from an outlet)?? That would mean 5 outlets in our 13' x 6.5' bathroom! (I do know the sink-spacing requirements for the vanity GFCI.)

??????? Does the recessed light fixture over a soaking tub need to be a waterproof one and GFCI protected, like the one in the shower stall?

Thank you!

Do yourself a favor and run a separate 20 A line that supplies each bathroom required receptacle.

Put nothing else on the circuit.

A single blow dryer easily hits 15 amps, and sharing between bathrooms will result in tripped breakers.

Could you post an NEC reference to support this? 210.11(C)(3) and the exception indicate that only one 20 amp circuit is required for all the bathroom receptacles or, using the exception, a 20 amp circuit for each bathroom can supply all the outlets in that bathroom. I can't any wording that requires a dedicated circuit for each bathroom.

I was planning to put just one receptacle at the vanity and maybe one behind the toilet in case anyone wants to add a washlet later. Should I put any more? Near the soaking tub for a radio or something??

You are prohibited by Code to install any receptacles, GFCI protected or otherwise, on the walls within a shower or bath compartment.

You are otherwise permitted to install other receptacles in the bathroom anywhere you wish provided they are GFCI protected.

"Should you put in more?"

I wouldn't....

"I wouldn't...."

Rather short sighted, especially for a bathroom with two sink bowls.

A pair of electric tooth brush chargers and that single duplex is full.

Unplug one for the blow dryer.

Do not forget to plug it back in.

Some other electric item?
Sorry, you are already out of receptacles.

Decide what you have now, what you are likely to need, then wire it now.

While it is not that hard to enlarge a box to add more receptacles, it is very inexpensive to add them now.

If walls will be tiled it is far easier to do it now.