Ultimately there are some investment companies that vertical integration is going to be a key part of their success, while others vary from no impact to being the downfall.

I am in the process of purchasing my first duplex. 

Quote from @Frank Barletta: Is 3% really that tough to give up for providing most of your guests, extra insurance, customer success, payment processing, communication, etc etc etc?

RuralWhat is my process for due diligence when underwriting deals?

There’s a plethora of tools out there, but looking for advice on where people have had the most success that has gotten quality long term tenants? 

Other than the auction and financing process another main concern is whether or not I'll be able to get an inspection done.

They may also take into account the income potential of the 4plex once it is completed.It's important to speak with a lender who has experience with construction loans to fully understand the process and requirements.

Make sure it explicitly explains the process for termination if you are unhappy with their services, especially if they violate the terms of your agreement.3.

Our property management company did not accept TurboTenant applications because their screening process is not as thorough as we prefer.

You may be able to argue that the current occupants would be disturbed by that process but they may or may not care about that.