Houston is a nightmare, I've been doing a ton of permitting out there and it's basically impossible because they use 95% of the right of way for the widest streets possible and if you're lucky enough to have a sidewalk, it usually doesn't connect to anything.

It's not as bad as Scottsdale/Phoenix though

Austin is the same, my sister lives there and a couple times while visiting her I walked her dog. Some houses have sidewalks, some don't, it's totally left up to the discretion of the home builder/owner if they want to put one in. So you'll have two houses with side walks then 6 with one and then one house with one...

It's fucking horrible for walking dogs and pedestrians in general.

Yes Houston is one of the cities I went to. I actually tried walking once out of spite. What would have been a 5 minute drive was a 40 minute walk along loud and ugly cement roads breathing in fumes from huge mall crawler Jeeps.