That 550 in rent, I am guessing, gets dissolved away quickly with the mortgage, insurance, taxes, and allocations for these other items, diminishing your returns..Also, see if that is market rent or if similar units in the area may go for a bit more (or less)..

It is a triplex, so the taxable gain will be allocated between the three units. 

Here are some guidelines as to the state position on brokering without a license:The 2015 Florida StatutesTitle XXXIIREGULATION OF PROFESSIONS AND OCCUPATIONSChapter 455 BUSINESS AND PROFESSIONAL REGULATION: GENERAL PROVISIONSView Entire Chapter 455.228 Unlicensed practice of a profession; cease and desist notice; civil penalty; enforcement; citations; allocation of moneys collected.—(1) When the department has probable cause to believe that any person not licensed by the department, or the appropriate regulatory board within the department, has violated any provision of this chapter or any statute that relates to the practice of a profession regulated by the department, or any rule adopted pursuant thereto, the department may issue and deliver to such person a notice to cease and desist from such violation.

It is conservative, but one can allocate less/more.Finally, I do not bring in principal paydown/equity into my calculation.

                                                   $26,542.89Annual Expenses Sewer $913.47RE Taxes $5,630.34Insurance $922.74Common area expenses -allocated Parking lot lights, MAINTENACE & repair $301.26Snow Removal $899.81Landscaping and plant care $360.18Trash $613.89Total $9641.68NOI $16,900How can I get more accurate information?

Here are two classics that I would require if I taught a class:Getting Things Done, David Allen - No matter what you do, this book provides a great way to build systems to manage your life, business, and success.The Intelligent Asset Allocator, William Bernstein - I would not have started investing at all if it was not for this book.

I would sell the home and allocate the funds elsewhere.  

Managers of higher-education endowments now allocate a majority of their assets to alternative investments, according to the National Association of College and University Business Officers.Many wealth managers advocate real estate as part of a larger portfolio strategy due to the high expected returns, low volatility, and lack of correlation to stocks and bonds.

Another thing we have learned is that we can't evict based on the late fee, so allocate the first dollars received to the late fee and then to rent.  

The portion you live in would be considered your primary residence and if you have lived in it for 2 out of the 5 years prior to selling it you will be able to take the first $250K ($500K if married) of profit tax free from the portion allocated to your primary residence.The other 3/4ths would be considered investment property and could be exchanged tax deferred for commercial property.So at the end of the day you could conceivably sell that property.