Here is a summary of the current Houston ordinance, and the proposed new ordinance. More details are found on Current Ordinance, Proposed Ordinance, and Other Cities’ Ordinances.
The Houston city code functionally prohibits chickens on most city lots. Up to 30 (roosters or hens) can be kept on 65×125 ft2 , as long as the coop is 100 ft from any building, school, residence not owned by the chicken keeper. It is also prohibited to compost the manure. The only exception is for a medical condition requiring unfertilized eggs, and then up to 7 hens can be kept.
Code of Ordinances, Chapter 6, Sections 31-38
2) Protect the rights of neighbors by punishing violations of the chicken ordinance to the same degree as violations by other pets.
3) Recognize chicken waste as a valuable fertilizer.