That's an exclusion. 

My mother was told she must sell their home by the end of 2018 to qualify for the married $500K gains exclusion.

@Alex Cervantes it sounds like she might have an agency listing agreement instead of the more typical exclusive right to sell.

Like I said, I can send you a 40 page plus Legal treaties on the topic of asset protection and entities to use in unstable time which focuses exclusively on the Series LLC and the code and case law.

I know the area must be the primary place of business and exclusively for business purposes but will I run into issues come tax time?

This works to your benefit as well.A majority of people I speak to want to get a non-exclusive agreement with me and it is very much a matter of if you can't commit to me, why would I commit to you? 

Google it in your area.They also have a monthly Deal Maker Session meeting where about 75 investors get together to buy and sell exclusive (non-MLS) properties every month.

Some target lists to consider:Absentee Owners with Equity (be aware that in some areas this is getting over-mailed so you might want to mail exclusively to this group)Seniors with Long-Time Ownership (often ready to downsize or transition to assistance)Owners with Low Financial Stability Scores (combine with age, high equity and length of ownership to get extra layer of motivation)

Most agents would begin the conversation by asking if you're working with another agent, and if so, they would either ask you to sign an exclusive agreement or let you and the agent work together.

You want someone who deals with investors almost exclusively.