Commonly overlooked rental property expenses in greater Dallas?

[Gavin Estenssoro]

I'm looking at BRRR-ing in the greater Dallas area specifically east Dallas (Garland/Mesquite area). As an out-of-state investor from Colorado, I'm curious about commonly overlooked rental or rehab expenses?

i.e. I hear Garland/Mesquite inspectors can be pretty strict so budget more for permits etc

Another example may be the local rentals/ rehab market requires updating to double-pane windows. (I don't know if this is true just using it as an example). 

Thanks!