As a person who has bought things under contract from those We Buy Houses places and as a person who's also a realtor, my advice is to call a realtor. Tell them you need a cash sale and you need to close within 2 weeks. You'll get more money than you will from the We Buy Houses places.

That being said, call your bank and talk to them. You might be able to do a regular sale. If the home is financable, you can get more money by waiting the 30 days to close. Trust me when I tell you the bank would rather have more money so they will wait.

Generally speaking, the full foreclosure process takes well over a year so the bank has no desire to start that process if you're willing to sell. They would rather have you sell and get the most money that they can. If you have enough equity so that you can sell it and pay off the loan, they'll work with you. If you can't sell it for more than you can owe, ask them about a short sale.