Saint Augustine isn't going to work between these pavers, because of the way that it grows. Zoysia might, but I'm not going to nuke my whole lawn just to replant zoysia for this patio space.
But anyway, that's beside the point, which was whether or not building a patio space like this requires a permit. I saw one thing somewhere that said that any man-made modification of the natural environment requires a building permit in City of Houston, and was just wondering if there was any nuance to that. I don't want to build it and then the City somehow finds out and makes me tear it all out and pull a permit.