Can I bypass non lendable houses by offering to fix property?

[Jack Walker]

I found a house that numbers wise will work fantastic. It’s listed at 99,500, 3/2 ~1500sq ft. The market rent is ~1200/mo. At the moment, the roof is in very shabby condition and thus in considered unlendable. Is there a way I can enter a contract with the owner of the house to fix the roof so it can become lendable and then buy it myself through conventional financing?