Most likely, foreclosed homes are SOLD as IS. There are no room for negotiation. However, there are instances when banks will consider repairs or replacement and it is a case-by-case basis. The bottomline for the resiliency is determining if agreeing to repair request makes more economic sense than putting it back on the market.
There could be multiple parties involved in the decision making in foreclosed homes. But don't let this faze you. Nowadays, banks act quicker than what they used to be. Moreover, the bank's sales addendum supersedes the actual Real Estate Purchase Contract. So make sure you understand the fine print.
In a normal or traditional sale, you are dealing with the sellers--which, to many, makes it less complicated and simpler.
If you are working with a competent realtor, you will be guided throughout the process.
That is why it is important that you interview local realtors and take it from there.