Selling a home without building permits

I'm looking at the electrical codes but they seem more generic than I thought they'd be. Are there usually no strict laws as far as outlets needing to be at a specific height or anything? Basically its a 50amp subpanel with a 15amp run on one side and a 20 amp run on the other. Both sides have a GFI as the first outlet and theres probably 5 outlets on each side with two of them being attached to the rafters so the flourscent lights can plug into them. The wiring coming into the subpanel is 6-3 romex. I know the codes are different for each area but that sounds about right, doesnt it?

Hippo, the house was built in 1958 and it only has 100amp service.