@Abraham Anderson Good post.For capital expenditures I've seen many recommend setting aside 10 % of their gross income.

He talks a lot about how he estimates vacancy, repairs, and cap expenditures.3.

We have three small children, and the less capital expenditures and maintenance to consider, the better. 

This would be a big capital expenditure, but would likely drive a 20% increase in NOI and thus an increase in value if the bank were to assess the property based on local Cap rates. - -Joe - regarding your feedback about complying with market rents, are you saying that the NOI for our property might not be as relevant as the current market rental rates for similar properties?

once those utilities go bad, your not going to be able to sustain the capital expenditure to replace each of the well's or the waste Water treatment system. 

Would you mind breaking out your expenses into PITI, vacancy, capital expenditures, etc. to see if there's anything that might be missing?

I think the only thing this calculator does not factor in is capital expenditures. 

I think the 2% you are talking about is to fix general wears and tears, not capital expenditures like roofs. 

You might be able to more deduct the expense in the same year as well under different code( sec 190) see below.Remember, expenditures unnecessary for compliance with the Americans With Disabilities Act of 1990 (ADA) are not eligible.If you spent more than 5k in both removing the barriers and making changes for the compliance,  you can deduct other expenses up to 15k rather than capitalizing and depreciating it. 

Don't forget to account for vacancy, repairs, capital expenditures, property management (even if you self-manage, there will likely come a time when you don't want to), and water/sewer (if you pay for them).