I come from the world of 100-500 unit properties where this was not the case and every property had it's own separate accounts that we controlled as the owners, but now having been owning and managing 1-80 unit properties for 4+ years, trust accounting is the best way to do it. 

As others have also noted, DSCR loans are separate from rehab loans which are often structured as hard money loans bundled with the upfront purchase.We fund both hard money for the purchase + rehab as well as long-term DSCR loans for the cash out refinance in BRRRR projects.

Where the argument hinges is on the lot separation. 

Do you have to keep the security deposit in a separate account?

Have a separate bank account from your personal, make sure the operating agreement spells out how to value if anyone exits, who can buy into it, you can vote to not distribute funds- if your sued they can come after your property but also your Cashflow stream.  

@Staci Kou absolutely NOT on separate leases.

Component Breakdown: The study identifies and separates various parts of your property (e.g., appliances, fixtures, landscaping) into shorter depreciation categories (5, 7, or 15 years) rather than the standard 27.5 or 39 years for real estate.2.

Only when the owners has to pay the utilities because the units are not separately metered.

In many cases, the commission for external bookings can indeed be higher than if the guest had booked directly through VRBO.To avoid these charges, some property owners ensure that their direct booking links or contact information are kept separate from VRBO listings.

Purchase price: $200,000 Cash invested: $43,000 House with a separate one bedroom/one bathroom on the second level.