You have 3 other people in your immediate family that will follow your lead, as the first generation english speaker and from what it sounds like, the financial head of household.

Another thing to keep in mind is that you may want to only have on person on each mortgage as to allow you to have more available to the household. 4 per person for 8 total vice just 4.

My goals are to build a second income for my family that will replace the lack of a dual income in my household. 

That plus the low growth rate in household income and the bad schools. 

We will say 736$ Total renting and household cost to you then is -400$ Now if you live in one side, Making big assumptions here total income:1000$ total rent but you apply the 50% rule to the total possible income2000 possible income *50% -1000(your side) - mortgage 654$Total renting and household cost to you then is -654$I am not saying to go one way or the other!

According to the 2000 Census, of the 17,890 housing units inside city limits, 15,966 were occupied, 10,033 of them by families. 31.1% of occupied households had children under the age of 18, 36.2% were married couples living together, 23.3% consisted of a female householder with no husband present, and 37.2% were non-families. 33.2% of all households were made up of individuals, and 14.0% had someone living alone who was 65 years of age or older.

.- Require monthly household income of 3X rent- Require two positive landlord references- Run criminal, eviction, sex offender and judgement reports.If you did these things, a polygraph would not be necessary.

I will link the article at the bottom containing all the numbers; the metrics used by OSBM including Median Home Value, Property Appreciation Rate, Median Household Income, Median Gross Rent, Median Mortgage Cost.1.

The majority of households do have pets though, so the Pet Guarantee is a program that a lot of PMs are offering to give some peace of mind to these owners. 

So, about me: grew up in an immigrant household, first generation American, lived in Chicago my entire life.