We heard that a bank will not give a mortgage to someone to buy it because of the mobile homes. 

I seem to remember reading somewhere on BP, that 4 units is the maximum for traditional mortgage financing.  

What's interesting and maybe a bit demotivating is that for long term renting the numbers are way inferior to the numbers I'm seeing here in the forum and unless I'm missing some critical info, in Greece you can barely cover the mortgage expenses, while taking into consideration repairs/CapEx/Insurance etc..

Hate to say it but ChatGPT could probably build you a custom one faster and cheaper.

I purchased 2 SFHs back to back years, and my biggest hurdle was proving a low DTI with a mortgage on my tax return. 

Consolidating insurance into a single policy for the entire duplex is usually cheaper, but verify coverage for both units.

(IF YOU LIVE IN NJ AND USE A DIFFERENT PERCENTAGE IN THE FORMULA, I.E. 75% OF ARV INSTEAD OF 80% OF ARV, PLEASE LET ME KNOW THANKS)so: $350,000*80%-$35,000-$10,000 = Offer Price of $235,000If the homeowner has any liens or owes money for the mortgage still do I subtract the amount they owe by the offer price and only offer that much?

Most of them have less than $130,000 left on their mortgage but have appreciated to around $350,000.

But this is a good size to learn on.You might get cheaper but you already know the contractor and if it leaks he will come back.  

Regarding Tax, Insurance, and Mortgage Interest, should we report these items only after we moved, and property was available for rent?