ADU Rules: Katy vs Missouri City
How do adu rules rules compare between Katy, TX and Missouri City, TX?
Katy and Missouri City have similar restriction levels.
Katy, TX
Fort Bend County
Katy's Zoning Ordinance defines an Accessory Dwelling Unit as a unit accessory to a principal single-family residence, used only by family members, guests, or employees working within the residence; commercial use is prohibited.
View full Katy rules →Missouri City, TX
Fort Bend County
Missouri City regulates accessory dwelling units through its zoning ordinance, restricting secondary residential structures to specific districts and limiting size, occupancy, and placement on residential lots.
View full Missouri City rules →Key Facts Comparison
| Fact | Katy | Missouri City |
|---|---|---|
| Allowed Use | Family, guests, employees only | - |
| Commercial Use | Prohibited | - |
| Utilities | Single metering with main house | - |
| Kitchen/Bath | Allowed | - |
| Separate Entrance | Allowed | - |
| Permit Contact | 281-391-4830 | - |
| Code Section | - | Appendix A, Zoning |
| Permit Required | - | Yes |
| Reviewing Body | - | Development Services |
| District Limits | - | Per zoning schedule |
Highlighted rows indicate differences between cities.
Katy FAQ
Can I rent out an ADU in Katy as a separate apartment?
No. Katy's zoning ordinance limits ADU occupancy to family members, guests, or employees working within the principal residence and prohibits commercial use.
Does an ADU need its own electric and water meter?
No. The ordinance requires the principal dwelling and accessory unit to be on single utility metering.
Are ADUs allowed throughout Katy?
Katy's ADU definition is in the citywide zoning ordinance, but subdivision deed restrictions and HOA covenants frequently prohibit ADUs in master-planned communities. Confirm with the Planning Department at 281-391-4803 before building.
Missouri City FAQ
Can I build a backyard apartment in Missouri City?
Only in zoning districts where the use schedule allows accessory dwellings. Most single-family districts restrict secondary units. Check with Development Services before designing any ADU project.
Do I need a permit for an ADU?
Yes. A building permit, zoning review, and inspections are required for any habitable accessory structure. Plans must show setbacks, utility connections, and compliance with the IRC.
Compare other topics
See how Katy and Missouri City 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