First Wholesale Deal, How Do I Negotiate Back Property Tax?

[Jeff G.]

I just recently got my first wholesale deal under contract. It's a duplex. The margins are thin, but it's nonetheless a workable wholesale deal. I'd like to carve out at least a little more profit from the deal by negotiating some of the back property taxes or late fees away. Then, I'd split the savings 50/50 with the seller.

There is just one problem: I have no idea how to do that. Can anyone speak to this? Do I need something on the paperwork side to give me the authority to negotiate on his behalf with the property tax man? Also, roughly how long can I expect the process to take?

Thanks!