The site is no longer online.

While the owner is free to sell the property and the information about how they run it as a business, AirBnB does not allow them to sell their online identity for the platform.

You can find online mortgage calculators that allow you to play around and see what happens if you do an extra payment or increase your payments.

I’d suggest checking out real estate networking events (local or online) like REIAs or BiggerPockets.

I didn't invent this, it's the metrics of online media today. 

If you want the best rate, I would find the cheapest online lender you can find where you are number 37 out of 70 for the month.

Now when your agent actually does the release then they send it to the listing agent and its is the listing agents responsibility to forward that doc to the sellers we do this all the time via docu sign or hello sign or whatever on line document system the local MLS uses.. somehow you seem to have this backwards..

It's just old mom and pop owners, many do not even list the rentals online. 

I really believe that we live in a time where all the information you need to do just about anything is available for free online.

https://www.lawmrm.com/jon-mcgraw/  Just call and make an appointment or request one online on his site.