find govt. funding (or any funding) in real estate for building fair housing...?

My credit score is a bit over 650 so a lot of people still dont want to loan large sums of money to me, however I have never made a single late payment on anything, I have heard trying to go thru the SBA is a real pain in the neck and doesnt usually yield results hoped for, is there any other way, time efficient, low cost, any place I can go to to apply for a grant if such thing exists or a low int. rate loan to buy some eye sore properties around town and fix them up for fair housing, I am trying my hand at real estate and fixing up properties, have done 3 houses so far and yet it is still hard to get the money, can anyone point me in a better way than the one I am currently taking? I have heard the SBA is really giving out loans for this sort of thing, any intelligent answers will be appreciated.