I have a 10x8 shed that I use exclusively to store real estate materials and supplies.

(Give that to sellers, they picket $100k after paying off the loan.) and then pay them 4.5% interest (what they could get from the bank.) now you’re talking $750/yr extra interest, and it’s being paid to family. 

Even if you don't feel you have enough info to give me directional advice, how would you go about deciding whether to address the problem?  

Jeremiah 33:3 came to mind: “Call to me and I will answer you and tell you great and unsearchable things you do not know” (RSV).

BackgroundCar is not for me but mid twenties daughter who I partner with to buy real estate.

Re 3X 6X not sure what you are speaking about.I was addressing reserve requirements which do not have anything to do with PITI 

I can show you the areas to invest and where to start away from.

Some states allow the owner to hire employees to work on their behalf.

The median price in the greater Austin MSA increased 2.4% to $435,000 over the same period.

I think there are two maybe 3 ways to look at this in my mind.  1) you go into it and bring it all up to modern standards but using that old charm to basically take what is there bring it up to modern standards and rent it out essentially I'm thinking cocktail bar or something trendy like that.2) most banks are on really good centrally located real estate if this is true, then I'd consider it for the dirt, plan to scrape the lot and go vertical with whatever the highest and best use is.3) a kind of combo of the two, if the lot is in a good location and its doable, pull the vaults or other "character pieces" out of the building, scrape the lot, and build whatever is best suited for the site there, but incorporate those historical pieces into the final designs.Is the site near a major retail area?