If by the 401k plan, then the 401k plan can get a non-recourse loan.

If you used the refinance proceeds to buy a new car and pay for a trip to Disney World, then the mortgage interest is a non-deductible personal expense.

Hi We purchased a property last year, a tenant living in one of the apt was cleaning the building for the previous owner, and got $50 off her $650 monthly rent.

Unless you accept a cleaning deposit. 

It's a slower process building your business credit reports for non PG credit.

So it would probably be in your best interest to wait until the lease ends and let the renters know that you will not be renewing their lease so that it can get fully cleaned and ready for showings so that you can get the highest offers.

@Matthew WardYou are correct - Florida does not have an income tax on individuals.If you operate out of state - a portion of your income may be sourced to a different state.You may be required to file a non-resident state return in that state.The Federal tax return reports income that you earned from worldwide sources.

If the tenant "abandons" the unit based upon facts (no notice in writing, but all non-trash personal property removed, utility changed billing, , etc.), I advise writing a "Notice of Abandonment" letter to the tenant that is mailed and emailed to last known address. 

If you have vents in the floor you need to have them cleaned and or replaced as well.

The more complex to construct or non-standard finishes = more money.