Duplex 1/1 Building and Renting out

[Brooks Beisner]

Hello everyone, 

I am new to investing in real estate but I have been doing my due diligence in the last year reading and learning as much as I can. I live in SWFL and are building in the North Port and Fort Myers area.  Here is my concerns or questions:

1. My dad and I (he is a contractor) were wanting to know if anyone had any trouble renting out both sides of a 1/1 Duplex. I feel like this is a win win for us as we can build a 1200 sq ft house with 600 ft per side for under 110k dollars.

2. I believe after all finances are paid and we can get 650-700 dollars per side our cash flow would be around 300-400 bucks per month. Has anyone had an experience with a smaller multi family? Is this a bad investment idea? 

Thanks for any input