Accessory Structures in Plano, TX (2026)
2 verified accessory structures rules for Plano, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Plano allows one backyard cottage per lot citywide under Zoning Ordinance § 15.1800, provided the lot is at least 6,000 square feet and the cottage stays on the same lot as the main house rather than becoming a separately sellable unit. The cottage's floor area must run between 400 and 1,100 square feet, or 50% of the main home's habitable area if that's smaller, and sit at least 10 feet from the main dwelling without exceeding its height.
Plano Backyard Cottage Dimensional Rules
Some RestrictionsPlano Zoning Ordinance § 15.1800.1, .2
The backyard cottage must be located on the same lot as the main dwelling unit. A backyard cottage must not be sold separately from the main dwelling unit. A maximum of one backyard cottage per lot is allowed. ... Minimum Lot Size 6,000 square feet. Backyard Cottage Height Must not exceed the height of the main residential building. ... Maximum Backyard Cottage Building Floor Area 1,100 square ...
Shed & Carport Rules
Plano's zoning code lets homeowners build sheds and other detached accessory structures, but boxes them in: no commercial use or renting, no placement in the required front yard, a minimum 3-foot setback from side and rear lot lines, and a 10-foot height cap once a shed sits in a required rear or side yard, per Zoning Ordinance § 13.900.1.
Plano Shed & Accessory Building Setback Rules
Some RestrictionsPlano Zoning Ordinance § 13.900.1 (Accessory Building Regulations — General)
In a residential zoning district, an accessory building may not be used for commercial purposes, with the exception of coops for backyard hens kept in accordance with the Code of Ordinances, and may not be rented. ... Accessory buildings shall not be erected in any required front yard. Carports and detached accessory buildings, except garages, shall not be located closer than 3 feet to any side...
Looking for Collin County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Plano city rules.
Accessory Structures in Collin County →