I do condo plans as part of my W2, and these SF calculations can vary based on the coord with the attorney and owner as far as how the association is originally set up in its budgeting for dues.

Modular, on the other hand, which I also deal with, you can do a mod and put it in the city limits but would cost as much or more as a stick built, more if you go with a two story.You're much better off going with an existing duplex

(Can a CPA fact check me on that, please?)

Can anyone please share the link to Diego Corso podcast episode on how he got started in real estate as an immigrant?

Quote from @Josh Bradbury: I can confirm what Tom Nagy is saying.

I recommend people only sell if (a) you can invest the capital in something that performs better, or (b) it aligns with your goals.

You can get some very favorable funding and you'll need to occupy one of the units for just one year. 

Buy the best deal you can find and in 10 years you will look like a genius.  

If you find the right small town area it can work out well.

Often times we don't know the exact transfer taxes because they can vary by state, county and even city.