Weigh what you would "save" vs spend on getting the license, maintaining, etc.

Why spend thousands of dollars in points to get the rate down to 6.1%, if the normal interest rate is 6.1% in a year and you can buy it down to 5% or 4%, etc.Nobody knows how low rates will go, but with the fed signaling that they will likely begin rate cuts in Sept, it's certainly a good sign. 

Quote from @Denise Evans:Often, owners or heirs will have to ask themselves, "If I spend $2,000 (or whatever) to redeem this property, is it reasonably forseeable that I will be able to fix it up and either sell it or turn it into rental revenue?

So, now to understand if there is a benefit and to determine a cost I get to give them more money after spending $35K.   

Roll it into the rent with a lease clause that anything over $X is split 50/50 between both tenants and you don't care who uses more water...In short, spend some money and make it a legal duplex or at least make it two separate units.

I don't want to spend hours installing multiple fans to make a tenant happy.Thanks 

Unless you can get bids for the work and cost analyze the difference between the work required and the actual bills I wouldn’t go spending thousands of dollars to separate the utilities apart unless that’s the gold standard of your area and besides saving you money is going to increase the value of your property.

Of course you wouldn’t.Original poster needs to show up at the auction and bid . spend your time finding a private lender or somebody to give you the money to bid.

That can be worthwhile if you don't want to or can't spend the time to build those relationships yourself.

You should only consider switching when your current software has a significant flaw or lacks features that force you to spend excessive time on workarounds.