@Mohamad Guene Regarding your question, it really depends on the investor.

The cost of setting up an LLC can be about $500-$800, just depends on the state and what benefits you want for your business.

The cost would be about 500k about $250k cheaper than it would be to buy another duplex property in my area.

Hi Kana - I think it depends on your budget of course.

I understand that starting out, depending on how fast you want to build your portfolio, you could spend a lot of time at it.For those with established investment portfolios, how much time is required to maintain it?

Depends on what your goals are. 1-4 units are still residential, so it doesn't really matter how you start.

It depends. all you talked about was the property but financing is more about the borrower, their experience, their credit, the cash available etc.

Most DSCR programs will want you to have owned the property for more than 6 months to allow you to use appraised value instead of cost.

Hi @Jerry Nogueras that depends on your goals and how open minded you are to different strategies. 

There would potentially be some weight issues with the 2nd+ floors of some shopping malls, depending on what the potential tenant wants to store in the upstairs unit.