I've been selling commercial full time for almost a year and am struggling getting off the ground - I am building a solid database (from 0) of industry professionals (buyers/sellers/brokers/wholesalers etc), doing lead gen daily, and finding quite a few pocket listings.

Do I need to tale to a professional that handles 1031 exchange before listing property for sale?

@Matthew Buttner Try his broker, this is one of the reasons why I don't hire agent.

Without any lease, you may need to hire an attorney to get them out, hiring attorney will cost you much more money.

You do not need any professional real estate certifications to flip houses, however, any training or special education in this field can be helpful, it certainly can not hurt.I had no appraisal, design, agent license, architectural training, or even a contractors license.

We hired a lawyer and filed for eviction in July.

I agree with @Nick Watkins on this. if you are worried about " fair price" hire an appraiser, few hundred dollars, and let them tell you and your sister the fair market price. then deal with this through the family. if you list the property then you are dealing with realtors, closing fees and taxes.

I own a 20 unit complex and recently had to let my existing property manager go and hired a new one.  

@Amber Landry  I am not sure what "high income" is but I personally would probably listen to the advice of the professional.  

If I was hired to collect 28 units each month that is a full time job for some property manager and a handy person.