ADU Rules: Houston vs Humble
How do adu rules rules compare between Houston, TX and Humble, TX?
Houston and Humble have similar restriction levels.
Houston, TX
Harris County
Houston permits ADUs (secondary dwelling units) by right up to 900 sq ft with kitchen and bathroom. One ADU per single-family lot. Setbacks are 5 feet from rear and side property lines. Deed restrictions may prohibit ADUs.
View full Houston rules →Humble, TX
Harris County
No Humble-specific ADU ordinance was found. ADUs in Texas are not mandated by state law (unlike California). Zoning district rules under Chapter 9 govern secondary dwellings.
View full Humble rules →Key Facts Comparison
| Fact | Houston | Humble |
|---|---|---|
| Max Size | 900 sq ft | - |
| Permitted | By right (no CU) | - |
| Setback | 5 ft rear and side (2022) | - |
| Parking | 1 space for ADU + 2 primary | - |
| Limit | 1 per single-family lot | - |
| State Law | - | No TX statewide ADU mandate |
| City Ordinance | - | None identified publicly |
| Zoning Code | - | Chapter 9 — Planning and Development Regulations |
| Contact | - | Building Dept: (281) 446-6139 |
Highlighted rows indicate differences between cities.
Houston FAQ
Can I build an ADU in Houston?
Yes. Houston permits ADUs by right up to 900 sq ft. Check deed restrictions first as many neighborhoods prohibit them.
Can I convert my garage to an ADU?
Yes, but you must provide 3 total off-street parking spaces (2 for primary home + 1 for ADU), so you need alternative parking for lost garage spaces.
Humble FAQ
Can I build an ADU on my property in Humble?
No Humble-specific ADU ordinance was found. ADUs in Texas are not mandated by state law (unlike California). Zoning district rules under Chapter 9 govern secondary dwellings.
What are the size limits for an accessory dwelling unit in Humble?
State Law: No TX statewide ADU mandate. City Ordinance: None identified publicly. Zoning Code: Chapter 9 — Planning and Development Regulations. Contact: Building Dept: (281) 446-6139.
Compare other topics
See how Houston and Humble compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool