They typically take a portion of whatever they save you as their fee.

But the only strategic thing about them is that you need to keep good records and hire a tax professional who knows how to maximize the tax savings from things you already paid for. 

After owning the property for 1 week and putting in a lot of sweat equity, I've concluded that I want to keep the Inherited tenants based on the condition of their living space and the quality of the people, Knowing I want to keep them to save myself the headache of a  turnover and vacancy of a projected move out If I were to suddenly increase rents. 

It can just be held in a savings account, no special account needed, but I always keep mine in an account separate from anything else.

Both on one loan may save you a bit up front in costs, but it'll make it more complicated if you ever decide to keep one and sell one.

This is just one example but without some intense research online you may not learn this, but by speaking with someone very knowledgeable in your chosen areas you not only save time but may find even better opportunities.Best of luck!

Built on the patio our outside of the house to save interior space. 

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

<<< Of course that is what I am trying to tell you but don't confuse 'advantage' with 'different' -- if your goal to is maximize your return than you should be more hands on; if your goal is more to save time and hassle then let someone else do it all for you; in the end you get what you put in. 

Our HOA/complex manager has saved my butt more than once when a guest has locked themselves out of the unit and I'm across town or whatever.