So the part of the 2 family house used for investment could be exchanged in a 1031 for more investment property.The portion they live in should be eligible for the primary residence exemption of sec 121. 

The Solo 401(k) also has the advantage of being more favorable for real estate investments using debt-financing such as a mortgage - as the 401(k) is exempted from a small tax called UDFI that an IRA would pay on the percentage of income derived from the borrowed money.So, as you continue your research and get feedback here on BP, think about what type of program will best suit your needs and be sure to ask questions along that line.

If the property was this persons primary residence then they can take advantage of the primary residence exemption of sec 121. 

In Short, I manage my own property, the Association handles my administrative work as an I.R.S. designated 501( C ) 3 Tax Exempt non profit community housing development organization.Oh yes:   A Portion of my Dues is tax deductible

Then if the tax database has the owner receiving the senior citizen's exemption rate, I'd check the Social Security Death Index.

If so, the current tax records probably have exemptions that rental property does not qualify for.Again, I am not familiar with GA property taxes, but I will use an example from Indiana.  

@Claudia Ho Your agent doesn't seem too knowledgeable on the ordinances.  2-families in Union City are exempt from rent control.  

Its basically only for an extreme emergency and is a sharing type program so not technically insurance but does allow you to be exempt from the tax penalty of not having insurance. 

Unless you qualify for the few exemptions.  

Realtors are exempt!