A housing authority is involved with renting of the property. And while they may be able to file a civil action against the tenant, they have no control over the owner.
No, they would not get involved in any way, shape or form. What business is it of theirs? They would be committing a crime themselves, abuse of process.
Now, the foreclosing bank can file charges, as it is their business, but in my experience they will not.
Unless they did something to deliberately cause someone harm, it wouldn't be a criminal issue.
No. If the house is foreclosed, then it being in bad shape may not even be the previous owner's fault. The bank may have sat on it and let it fall into disrepair. And this is not a housing authority issue. It would be a code enforcement issue, and not criminal charges, but civil penalties.
Criminal charges are handled by the police department and district attorney's office.
Most legal issues surrounding real estate are a civil matter handled in civil court.
You don't give specifics about your situation, so its hard to answer. But, generally, damage done by the owner while he still owns the place is not criminal because they have the right to damage their own property. Depedning on the exact situation, they might be financially liable to the lender or the city.
Can the housing authority file criminal charges on a previous owner of a forclosed house if left in bad shape