So I see about $21,000 in expenses you may not have accounted for - and that is before someone trying to bid you down by $25,000 to buy the house at $605,000.  

I have a few questions, are liens satisfied with the winning bid?

Get some bids and go from there.

I would honeslty just get a contractor to get a bid for you and then you would know what all needs to be done and not miss anything. 

I  tried one bidding in county for forclosure properties and went over budget.  

.:  I'm  replacing one roof now that is 26 sq and the bid was $12,350. 

Hopefully, he takes my advice to do his homework before trying to buy anything at the auction (literally every other week someone loses a buttload of money bidding on HOA foreclosures with clouds on title). 

They all have to put their space needs out to bid, and it can be a long drawn out process.

I currently have a toilet and vanity in my basement and I am getting bids to add a shower to make my basement a livable space.

**Helpful for Investors**: BOVs/BPOs can give potential commercial real estate investors a rough estimate of a property's value to help them determine how much to bid[5].4.