On 4 it is $12,000/year.  3.3% depreciation is similar numbers - usually almost eliminating all your taxable income from financed properties after repairs and maintenance is factored in. 

Doing the numbers on a commercial property value calculator, without debt service I will be at at a valuation of $3,026,400.

With mortgage rates in the 7%+ area the buy vs. rent calculation doesn't make sense for a condo buyer.

Any calculator or rental calculations that you recommend for Duplex or SFH to analyze if they're worthy of buying for positive cash flow?

Hate that it happens, but it definitely can.Might need to calculate what your time is worth and deciding next steps from there.Good luck! 

I'm planning to make additional payments to pay off the mortgage faster, and I'm unsure how to account for this in the ROI calculation.

These detailed records, (many copies of which had to be scanned & emailed to them), saved us from any 'taxable consequences'. 

@Blake Yarbrough why not have the individual loan you the down payment, secured by the property, at a rate that is more than he can make in the market or in a CD and calculate that amount into the total debt service.  

View report*This link comes directly from our calculators, based on information input by the member who posted.This property was listed $320KDuplex with basement and 3 car garage in a Class B neighborhood .

that amount is calculated on the entire sale price BUT it comes directly out of his profit affecting it exponentially.