I would bounce it off the AHJ first. The problem I see is that cords getting shut in the door. If it is a subsitute for the required receptacle per NEC that I would discourage it.

- Quey By Tony Atkins (Livingston, TN), 03/25/2017

I would definately check with the AHJ... Where I am, unless it is a "permanently installed" appliance such as a dishwasher or a garburetor and the receptacle is intended for said appliance, you are NOT permitted to install a receptacle in a cabinet.. The exception to the rule I believe is if the receptacle is only energized when the cabinet door is FULLY open then it is allowed ( this is intended for those "appliance garages" you see in kitchens). Reason being its too easy for someone to mistakenly shove an appliance such as a toaster or in your case in a bathroom a hair dryer or curling iron thats still on into the cabinet, along with all sorts of other things (linens and other "spare parts"), close the door, heat builds and a fire starts. A.D

- Gregory Green (Valley, KS), 03/25/2017

I am somewhat surprised that there would be any concern about placing a receptacle in a cupboard. With our plethora of rechargeable appliances .... phones, razors, hair clippers, drink mixers, etc., I can see a real use for receptacles in cabinets and closets. Indeed, many computer desks, with their mounted power strips, are essentially 'furniture with outlets inside.' Can things go awry? Sure they can .... but at some point we have to leave room for change.

- Mg Drain Cleaning Services (Grass Valley, OR), 03/25/2017