Based on your comment, I can only surmise that your "nowhere near $230k" remark means you are really well past that mark in income, or your mortgage payment is indeed quite low.
I don't think it's the raw dollars that matter but what the alternative for those dollars are (aka opportunity cost).
You must have a very low mortgage payment.
Anyway, that seems believable for Austin, TX.
In my case, the going rate of a house similar to mine rent-wise would be about 50% higher than my current mortgage payment.
[1] http://www.investopedia.com/terms/o/owners-equivalent-rent.a...