Most puppies are house trained by around six month of age but of course every puppy is different; from size to breed to personality. The more consistent you are in providing your pup with what s/he needs to learn the right behaviour, the quicker s/he will understand.

While being house trained your puppy should ideally be either: outside while you actively look for and reinforce elimination, inside with your constant supervision, or crated/ gated off in a puppy-proofed room...