Accessory Structures in Katy, TX (2026)
4 verified accessory structures rules for Katy, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
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.
accessory-structures/adu-rules
Some RestrictionsShed Rules
Katy requires a permit for storage sheds and other detached accessory buildings, with setback and height limits set by the city zoning ordinance and building code.
Katy Storage Shed and Accessory Structure Rules
Some RestrictionsGarage Conversions
Katy requires a building permit for converting a garage to living space under the 2021 IRC and 2023 NEC adopted Jan 1, 2024. Conversions cannot create an unrelated rental unit, and HOA deed restrictions in master-planned subdivisions often prohibit the change.
accessory-structures/garage-conversions
Some RestrictionsCarport Rules
Katy treats carports as accessory structures requiring a building permit, with placement governed by the same setback and height rules as other detached accessory buildings.
Katy Carport Permit and Placement Rules
Some RestrictionsLooking for Fort Bend County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Katy city rules.
Accessory Structures in Fort Bend County →