If I remember right, there limitations were: no pre 1950 buildings, no houses converted to duplexes, minimum 100K of value and 50K loan.

As a very simple example, last year I bought the "cat piss condo" for 43K.

Hi, I am still a newbie and learning how to calculate numbers, If I was interested in a duplex to house hack, would a 1.7% Cash on Cash ROI be a good deal?

Buy a smaller multi like a duplex or quad, you'll be very happy you did!

To start things off, we are planning on doing either a live-in fix & flip or a house hack with a duplex. 

Keeping it as a SFR-hold doesn’t make much sense but I’m considering the potential of a Duplex and wanted to hear your thoughts. 

I have a duplex and another under contract.

Vinay,My family's first rental is in Cambridge.Although it is a different play for us (duplex that's been in the family for 50+ years, you can look at other post of mine), my understanding is the market hasn't pulled backed.

When I bought a house 2 years ago, I wanted to buy a duplex and my lender told me I wasn't able to use the theoretical rental income to help qualify.

One of the properties I'm getting ready to build a second free standing house on, making it a duplex (2 houses on 1 lot).