A lot of people don't realize they need credit repair until they are denied for a loan. Then they want their credit score up immediately. But it takes time to dispute the credit bureaus and get responses. The credit bureaus have 30 days to verify your dispute, but that doesn't include stall letter time, mailing time, and everything else that slows you down.
It all depends on the situation though, but realistically 6 months to 1 year is accurate. You could get anywhere from 4 to 6 dispute cycles in there. Building credit doesn't happen overnight, but it can be ruined instantly. Just my 2 cents.
