Texas deadbolts?

[Rick Reed]

I'm closing on my first rental property tomorrow. The first thing I want to do after closing, is change the locks. I've heard that in Texas, a rental must have a single sided deadbolt (where the deadbolt locks ONLY by means of an inside lever). Is this true when both a deadbolt and locking knob already exist? I ask because neither of the exterior doors currently have such a deadbolt and the property has been rented out for some time.

Thanks in advance!

[Shawn Thom]

Originally posted by @Bryce Y.:

What exactly constitutes an exterior door? Is a door between the garage and house considered an exterior door?

From what I have read and understand, yes it does. I have a house where the garage has been permanently enclosed and exterior garage doors no longer open, so i am not counting that one. Other houses where garage doors can open I put the locks on.