They will do some research and see if there is debt attached to this place. 

@Mike H.Looks like you have done your own research.

- refer to the original depreciation schedule but "pause it" so that I pick up depreciaiton as if no years had passed in between rental use (this doesn't sound correct, but it's an opinion I've come across in my research)- start fresh and ignore the previous depreciation schedule, picking the lesser of an adjusted basis (original home purchase value minus land value + improvements) or fair market value minus land valueI have spent several hours looking at IRS publications and searching forums with mixed or no advice.

The seller probably just wants to do a 1031 exchange and doing research prior to escrow on what the replacement property will be is actually very smart. 

., according to Zillow.Another research firm, SmartAsset, recently figured the average monthly rent payment in Memphis to be $769.While more than half of Memphians now rent housing, that figure is still well below the more than 60 percent who rent in Miami, New York, Los Angeles and in the San Francisco Bay area.Of the top 50 metros, 29 were comprised of majority renters (more than 50 percent) in 2016, up from 16 cities in 2006."

Which is probably why some swear that some environmental factor is giving them trouble when others have no issue.The gold standard for mold testing is called the ERMI and can be ordered from mycometrics.This might be a can of worms you don’t want to open and would agree with most of the posters and let them out of the lease.

Maybe I need to be more specific in my question, lets say I'm going for the BRRRR strategy how different it will be from getting an Home-equity Loan instead of Refinance, talking about time, hassle and amount of capital that I can get back.Thanks @Ron Harris I did a little of research and though about getting a HELOC too maybe I should add that option into the comparison too.

I've been researching using Lines of Credit to pay down a mortgage (this one is for my primary home).

I researched the realtor, and she has been a realtor for over 5 years, with 30+ properties closed. 

I looked as stocks, realestate, gold, insurance, etc...