I’ve also used Bank of Internet, they’re a little slower,  But if you get a Costco premium membership for the discount their rates and charges are quite reasonable. 

In terms of where to look, i think you have to first determine your goals.

There are too many variables to determine pricing this way.

Have you ran the numbers on both of these scenarios and determined the difference in ROI and cashflow?

I would research your particular materials and construction and determine the likely risk, but I would seriously consider if your tenant is worth spending this kind of money on and what your plan would be for the tenant and project if you actually have a documented case of asbestos, which may require professional mitigation if you think you might have a liability situation with your tenant.  

How do you determine if you’re getting good terms on your financing?

First of all, look at how long other properties are taking to sell and then determine if the marketing period has been "too long" or not - not all markets sell the same.

Second this electrical company has already fixed this issue in my yard a few years ago so this “might” be warranty work because their first splice may have gone bad.So, I have given them permission to do the work, and made it clear that I expect the patio to be made to look like it does now after the work is completed.But my nervousness kick in because of the company pays to remove the decking, digs up the splice, and determines that it’s a different problem and not warranty work, now it’s my neighbor who is on the hook, and responsible to pay the bill of repair, and responsible to get my patio put back together.This seems like it could go very wrong......Should I get a contract written and signed by all parties to protect myself?

Now, you could find all these on the internet. 

Or print some from the internet and have your attorney review them.