Moving with a 15-16 month old. Any tips to make the transition easier?

My husband and I are building a house and it should be done for us to move in about a couple months when our son is 15-16 months old. I'm sure he'd be fine during the day, he loves new places. But I'm a little concerned about at night. He's always been kinda hard to get to sleep, and we finally have gotten over the big hurdles and he has been a lot easier to get to sleep. He will be sleeping in our room, but it will be different from our current house-obviously. I am just wondering if anyone has any good tips to make the transition smoother for all of us. Also, if I'm over thinking things and making a mountain out of a molehill, you can tell me that as well. :) I'm not overly worried, I'm just a little concerned.