When you are dealing with community banks, they actually like to see diversified ownership. 

Big 3 bank is going to just let this go. 

What makes it slow in this case is that you don't really start seeing real cash flow until after year five but it's more effective than rentals in that there is little to no maintenance.Sure you can live in a home while fixing it up with the intention of selling it for a nice profit later but I think many people are already doing that and the buyers of slow flips now also have that opportunity without having to qualify with a bank.

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? 

The best HELOC usually comes from the bank where you have the most money or the one you have the best relationship with.

For a traditional Heloc at most small banks/CU's, the rate will be variable and will be WSJ Prime + a spread that represents the borrower's credit risk.

So it is really looking more at bank deposits, but most mom and pop owners won't share bank statements.  

Welcome to the world of bank loans!

As lenders, well issue a prequal/preapproval letter if we've analyzed your income, assets (bank and brokerage statements to establish that you have the liquidity to afford the down payment, closing costs, and reserves), review credit of the guarantors, review the relevant experience to ensure that we're not throwing our money away on newbies that are wandering around in the dark, and have put together a reasonable plan of attack for the project.

If your using financing the bank requires this.