Turning detached garage into ADU in Houston Texas

[Josh Guild]

Does anyone have any experience with this? What does the permitting process look like? I've done this once before in Lubbock, Texas for an Airbnb on my own property but was ultimately told by the city I could not Airbnb the unit after operating for about 7 months. Does it matter if the property in question is zoned single family or multifamily (i.e a Duplex). Any additional information anyone could provide would be appreciated!