@Juan Campos
Absolutely, I did this as a straight purchase, and was able to acquire it off market where I did not have to compete for it. The gross rent multiplier is $105. I foresee rent going up in the near future beating the 1% rule. I met with many banks and credit union, to find the best financing option for me. I was able to purchase this as a "primary residence" since I did not own a house previously, and by purchasing it as my "primary residence" I was able to put very little money down. I have a 10/1 arm on the property with a 2.85% interest and no PMI.
Closing costs are right about $5,000
I will be renting the one have out and I will have a roommate on the side I live in with me. So, with living in the property, I will not only live for free, but will produce a positive cash flow.
If you have any more questions let me know. Through my experience if you are open to adjustable rate mortgagees, you have a solid credit score, and you purchase it as a primary residence you can avoid large down payment. Some lending institutions wont allow a duplex for a "primary residence" so go to as many institutions as you need to until you find what you are looking for.
I hope this helps.