bank owned house has mold, will bank fix?

You should only buy a house like that if you know what you are doing and how to fix it. You are not going to get the same deal if they have to pay someone else to do it.

My niece bought a house like that. Not sure if it was due to a flood or lack of electricity for the sump pump. But the house had been vacant for about 4 years. They both spent a solid 3 weeks replacing flooring, woodwork, fixtures, etc. and filled a large dumpster in their driveway with the scrap they ripped out. But her husband is a fishing guide who does construction in winter, so they were familiar with how to do everything. They ended up with a nice home on 3.5 acres.

Generally the answer is no. A bank owned house is usually sold as is. However, it never hurts to pitch them an offer. Either offer to buy on condition that they fix the problem or get a quote from a licensed professional and subtract that amount from your bid (and explain why). You never know, they may take it.

Bank owned houses are usually sold as is, however, there is no harm in making an offer contingent on mold remediation being completed. If the offer is rejected, then you have to determine whether you want to pay for teh remediation.

Bank-owned properties are sold as-is. If you document the mold, extent of damage, costs to remediate, you might be able to negotiate a better price. But they may have taken the mold into consideration in setting their price. Either way, you have to hire proper licensed mold removal specialists to do the remediation.

Nope house is sold "as is' NO warranties/ guarantee

Unless you got 25000$ cash to do testing and repairs - walk away

Bank owned houses are auctioned off "as is". When you buy it, it is yours, along with any issues that displease you.