I really miss this Boy, and I am worried I will never see him again?

Okay well I haven't seen him in a year.And also I cannot call him because one I am scared to and pluas his number is disconnected and doesn't work anymore. Also I cannot go to his house because it is so far away.Plus He has 2 Houses (Both are far Away) and I don't know which one he lives in.One of his houses,though, looks like a Private House and there were dogs outside and everything. Well today I went to his house to give him a Birthday Invitation, but he wasn't there, so I had to give it to his sister.Anyway, I am hoping he will show up at my party but I don't know. I just really want to get back in contact with him.What should I do?

Ummmm, these seem like unusual circumstances. If you have no way to be in contact with him, you guys probably wont stay friends, but maybe you could ask his sister for his number or something and you could call him and ask him to hang out with you sometime?