Unfortunately, while all the online places area great sources of information, you are much less likely to take action, or find someone to shadow, when online in a forum. 

I've found deals in local online groups on Facebook, simply asking people for what I want. 

Since the last time I was online, I have grown the investing to fix and flipping and a portfolio of 4 properties that are producing passive income.  

I think I've talked to maybe 2 tenants on the phone so far, and I didn't mind because there's a lot of scams online.

But this was late 90s so way before on line stuff had taken off.

There are also many online calculators you can use if you do a search for them.

A national buyer would review the BPO and maybe do some brief online research, but would not typically not know, as in your example, about the sewage issues or extent of interior rehab needed.

Go to courthouse in city where your rental is, or see if docket is available online, and write down the names of the attorneys with the most landlord-tenant cases.

Additionally, not all transaction types support Locations, meaning you'll have to create journal entries to correct them—requiring a solid understanding of debits and credits, which can be time-consuming and error-prone.Instead, I recommend biting the bullet and upgrading to QuickBooks Online Plus for each entity.

You can also check their reviews online at Google, Facebook, or Yelp.