
Does Your Open Garage Count as Impervious Cover?
If you’re buying, selling, or adding on to a home in Austin, impervious cover limits are one of the most consequential — and misunderstood — zoning rules you’ll face. And open-air garages, carports, and porte-cochères are frequently the culprit behind unexpected compliance headaches.
Most people assume that if a structure doesn’t have four walls, it doesn’t count toward their lot’s impervious cover total. Unfortunately, that assumption is wrong — and it can derail a renovation permit, kill an ADU addition, or complicate a real estate transaction at the worst possible moment. Here’s what every Austin homeowner and buyer needs to know.






