“I’d like to find and buy a foreclosed duplex directly from a bank. Any advice on how to do that?”
Having sold close to 800 foreclosures for banks, I definitely know the answer to your question.
If the property is owned by a major bank, they have a process they go through before they will consider an offer. You could offer double the value, but they won’t consider it until they have the property vacant, priced, and on the market. And that could take weeks or months.
On the other hand, if the property was foreclosed on by a small bank, investment group, or an individual, they will be more flexible and may consider your offer.
Honestly, you’re really looking for a needle in a haystack. Nevertheless, I wish you good luck!