Can a dog pee on a sod balcony?
I don’t see this as being a problem or promoting bad habits. And, by about 5-6 months the pup should be able to go several hours between potty breaks…so I doubt you will need 1 year’s worth of sod. Puppies can learn to go on non-porous materials too (i.e. cement), so you could also try putting a paver or two in a litter box to make a potty spot that will never die. It might help to put a puppy pad in it to start. And, to help with pee smell on cement, a mixture of water, baking soda, and vinegar works pretty well. Good luck!