Peeing in the House

Somebody please help! I have an 11mos old male pom. While he does urinate outside every time we put him out, he comes right back in and pees again in the house!! He pees everywhere, upstairs, downstairs, hardwood floor, carpeting.. makes no difference. We are his 1st owners and did do crate training.

Someone please give me feedback. We are very close to getting rid of this dog and my sons are devastated…

Thanks.