Accessory Structures in Owasso, OK (2026)
4 verified accessory structures rules for Owasso, Oklahoma, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Owasso Zoning Code regulates accessory dwelling units through its local zoning ordinance (Ordinance 1131). ADUs may be permitted in certain residential districts subject to local planning department approval. Detached accessory buildings in residential rear yards cannot cover more than 20% of the minimum required rear yard and total floor area cannot exceed 500 sq ft. Contact Planning at (918) 376-1540 for ADU eligibility.
Owasso ADU / Accessory Dwelling Rules
Some RestrictionsShed Rules
Owasso Zoning Code limits detached accessory buildings in residential rear yards to 20% coverage of the minimum required rear yard with a maximum total floor area of 500 sq ft. Building permits may be required from Building Services at (918) 376-1534. Setback requirements vary by zoning district. Before beginning construction, check with Building Services to determine permit requirements.
Owasso Shed & Outbuilding Rules
Some RestrictionsGarage Conversions
Garage conversions in Owasso require a building permit from Building Services. The conversion must meet Oklahoma Residential Code (2015 IRC) standards for habitable space. Carports require a Special Exception from the Owasso Board of Adjustment. Contact Building Services at (918) 376-1534 to determine specific permit requirements for your conversion project.
Owasso Garage Conversion Rules
Some RestrictionsCarport Rules
Owasso treats carports as accessory structures requiring a building permit and, when proposed in a residential district, approval by Special Exception from the Owasso Board of Adjustment. The published Community Development FAQ states 'Carports are permitted by Special Exception, which requires approval from the Owasso Board of Adjustment.' A detached accessory building in a rear yard is additionally limited to 20% of the required rear yard area and 500 square feet of total floor area, and Owasso has adopted the 2018 International Residential Code and 2018 International Building Code as the construction standards.
Carport Rules in Owasso
Heavy RestrictionsLooking for Tulsa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Owasso city rules.
Accessory Structures in Tulsa County →