Insurance Deductible Reimbursement

The board/management company will have no part in the claim, unless they are shown to be negligent or somehow involved. This is between your insurance company and the neighbor's insurance company.

Right and I am saying what if other insurance company refuses to reimburse my deductible? No reason I should have to pay $1,000 to repair damage other guy caused. I assume worst case scenario is small claims court.

Did you talk to the source of the flooding? Usually, the first step in this situation is to get the neighbor and his/her insurance company to pay, rather than invoking your coverage. The neighbor's policy is only going to pay net of the deductible on that policy, so someone is going to be out of pocket here. You need to work that out with your neighbor.

Didn't talk to him. It's some 18 year old kid who left his AC unit on when he went on vacation, so he was not even around for the fallout. I asked for his contact info but the super wouldn't give it to me. Guy never even came by to apologize or anything. Sure I could go up there and say something but he's just some punk kid who has his dad as a guarantor who really paid for it all. But there is no reason I should pay a penny of this so either their insurance needs to, he needs to, or I'll have to take him to court.

My guess is that you assigned your right to make a claim against the neighbor to your insurance company. They will seek recovery for the entire amount of the repair, but if what they get from the upstairs neighbor or his insurance company as a settlement falls short of that amount, they will first reimburse themselves and then pay you back your deductible (i.e. if the amount is $1,000 or more short of what they laid out, you won't get your deductible back).