Aside from anticipating a possible increase in taxes, be sure to get an insurance quote. 

We want to travel, maybe buy a sprinter adventure van or a tiny house in the white mountains, or maybe invest in a few AIRBNB's down the road near ski areas to keep up our adventurous lifestyle (this one is more selfish but tourism in New England is great and steady).We look forward to to being regular on the forums and look forward to meeting and interacting with all the fine folks on BP.

Final thing, I noticed you don't have any closing costs, you need to budget for that unless you are anticipating the seller paying them.

Although I have actually started to sell more than anticipated I made sure that I was going to do at least 5-6 deals/yr to make it worth my time before starting. 

This house had foundation issues, which I knew, but I did not anticipate getting hit with so much rain to cause this delay further than I projected, which ultimately translates into more holding costs ($). 

I’m not familiar with the Indy market but I guess some people will concede some cash flow if they anticipate good appreciation.

Auction.com is a barrier so that you never directly interact with the bank.They really do not care. 

@Joe Villeneuve You and I don’t need to interact anymore.

This of course, is based on the idea that the other tenant probably isn't doing anything wrong and this person is just annoying, only you'd really know that based on your interactions with both.

Let's say I want to ask for a bit more than I am anticipating I need as a safety net, just in case something does come along for more than what I anticipate spending on my first investment property.