Have been to Houston in 2013 and from my memory it gave me a similar profiling to Perth, WA very resource centric (mining, oil&gas) next to energy rich region and liked that the city was big yet not maddening as the NY/LA's of the world.

Some points I would be considering:1) The interior painting looks a little low for all the work involved.2) The roof looks like it will need some new sheeting in spots, at least as I can see staining on the ceilings from roof leaks.

Inspection rep facetimed me saying hey this is a mess, inspection should NOT have been today, there's leaks everywhere, nothing is ready, etc.  .....I had to pay for the 2nd Inspection2) New build wasn't supposed to have tenants, on the day of 2nd inspection 2 weeks ago, again I get a call from the Inspection rep that there were people living on both sides. 

Certainly wouldn't have much issue showing credit card statements of local restaurant/grocery/gas purchases in that area through the year, but that seems a bit asinine to track or even think they'd request. 

The floor has quite a few issues (high points, low points, pitting, flaking over an 8 sq ft area where there was a plumbing leak that they caused, and many sections are still wet even after a week).

GoodbudgetWhat makes it unique: The Goodbudget app uses the popular envelope budgeting system, which allocates portions of your monthly income to virtual envelopes, or expense categories, like groceries, gas, debt payoff, etc.

Ensure the plumbing and electrical connections are regularly checked for any leaks or faults.Lighting and Fixtures: Modern light fixtures and ceiling fans add aesthetic value and comfort.

This would also eliminate the need for gas at the property as you can go all electric in the buildingI am not sure on the cost per se.

Quote from @Dave Kush: Contact the tenants and tell them they can't smoke inside because it leaks into the neighbor's unit. 

Unlike gas and water, in Philadelphia electricity is not lienable.