You mentioned about the difference between the purchase interest rate and the refinance rate.

What makes you different? 

Remember, successful asset management is the difference-maker in real estate investing.Two properties could look identical, but how they are managed is the real game-changer

So you are already paying tax on the income.LLC taxed as an S Corp would be different, but I doubt that is your case.

I’m slowly learning how to identify soil types but like you said….we can’t afford to be wrong right now  jurisdictions are different all over the US.. many still just use perk tests  others do the soil samples so you just have to deal with your current area and regulations.

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

Okay I know I asked a different question earlier but I have another one considering anther situation.

Also depends on if you have strata/condo fees or HOA.The cash flow on my places are all over the place and yet I'm fine with all of the rentals for different reasons. 

Duplex have different zoning that may permit additional units.

They tell you you’re asking too much rent (you lower rent, avoid vacancy and make more money) ,your marketing is bad (they take new pictures, advertise in different places, change wording, whatever, and get a tenant saving vacancy.)