ADU Rules: Katy vs Richmond
How do adu rules rules compare between Katy, TX and Richmond, TX?
Katy and Richmond 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 →Richmond, TX
Fort Bend County
Richmond's Unified Development Code defines accessory dwelling units as secondary dwellings on the same lot as the principal home, with separate cooking, sleeping, and sanitation facilities and specific dimensional requirements.
View full Richmond rules →Key Facts Comparison
| Fact | Katy | Richmond |
|---|---|---|
| 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 Source | - | Unified Development Code |
| Min. Separation | - | 10 feet typical |
| Permit Required | - | Yes |
| Reviewing Office | - | Planning and Zoning |
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.
Richmond FAQ
Does Richmond allow accessory dwelling units?
Yes, Richmond's Unified Development Code recognizes ADUs as a defined use, but they must meet zoning, dimensional, and permitting standards reviewed by the Planning and Zoning Department.
Do I need a permit for an ADU in Richmond?
Yes. ADUs require building permits and zoning approval. Contact the Building Department at 281-232-6871 before designing or starting construction on any ADU.
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