I offered 39,000. What do you think of area?

[Nigel Ford]

     I just offered 39,000 with owner finance on this duplex (7517 Mettetal st Detroit, MI). The cashflow looks good I think it would work even at the asking price of 49,900, They are offering owner finance at 7% amortized over 10 years with 10,000 down. What do you think about the area and appreciation there? I made it contingent on inspection and title documents. Is this a newbie mistake?      

I appreciate your input in advance, Nigel