My friend is working on a construction project and is looking for an expert in this area.

If you've occupied your current primary residence for 2/5 last years the gain on the sale of that property will be non-taxable. 

If using a lender this is a non issue.

The FIRPTA Certification requires that if a selling party is a non-resident for purposes of U.S. income taxation, a portion of the sale is withheld.  

I moved out and and rented it to a non traditional renter, who put down a huge deposit.

Become an expert in your market.

I’m not an expert on real estate or multifamily but I understand the basics and can probably provide some help if it’s on a basic level of simply wanting to own rentals.

There is nothing worse than having to tear something out because of non-conformity.

Here is how I see the deal.Asking Price- 600,000# of units- 13 Gross Operating Income- 71,820less Taxes- 3087 Insurance- 2310Repairs- 6875 (added 25% to estimated price, )Utilities(common area)- 400Misc(pest, snow,landscaping)-2300Net Operating Income 56,848lessMortgage Payments 46,800Cash Flow 10,048Now I will not be offering $600,000 but really wanted to check with some of you experts to make sure I'm not forgetting anything.

Make sure to check the threads, listen to the experts and follow the advice of those who have experienced your situation.