Depreciation outpacing principle paydown?

[Jimmie Dickey]

Quick details: accidental-ish landlord. Always wanted to get in, just didn't buy this house with the intention of it being a rental. 

Purchased in 2008 for 155,000. Used as primary residence until placed in service on July 1, 2014. Set up depreciation based on value at the time: 140K (103,973 in house, 36,027 in land). Total depreciation so far is 5,514. Payoff on the mortgage is 139,500 today. 

What worries me is that if I were to sell today for market value, the profit would be considered the difference between my new cost basis (which is now a decent bit lower than actual payoff) and sales price and I could very well end up paying money to sell, even when at first glance, there appears to be a gain. 

Honestly, I'd like to unload it and start fresh. Cash flow on the property is minimal, but positive for now, at least until the first major expense comes. Had zero trouble getting it filled the first time. I'm not comfortable with the long term outlook of the neighborhood, but very confident for the next 5-10 years. 

Thoughts/advice?