In need of funds

I have found a 16 unit apartment building the owner is willing to let me take over his payment
Or for a percentage of what I make Claims it has 100% occupancy and 6900 monthly income but he wants 20% down I offers him 350000 no down payment 5% for 15 years I think he is adamant about the down payment and I don’t have any money at all he said down payment is neg I need the money for the down payment or is this not a good offer

Have you completed any research on this building. Have you seen any documentation confirming that it is in fact making $6900. a month,

No not currently I was hoping to get an agreement before asked for any documentation

why would you want to make an agreement on something that you know nothing about? Do you have any experience in the Commercial industry?

It look like Erife been reading theses books that provide misleading info.