ADU rules in Tulsa, OK — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Tulsa Zoning Code Chapter 45 (Accessory Uses and Structures) governs ADUs. Tulsa has been progressively liberalizing ADU rules. The Neighborhood Infill Overlay allows ADUs in certain residential districts without special approval. The Urban Residential Overlay (URO) permits ADUs and live-work units. Live-work units are restricted to 50% work area, capped at 2,500 sq ft. ADUs may include backyard cottages, garage apartments, and basement apartments.
Oklahoma has no statewide ADU mandate. Tulsa regulates accessory dwelling units through local zoning. Oklahoma City and Tulsa have adopted ADU-friendly zoning amendments in recent years. Common conditions: maximum size (typically 600 to 800 sq ft), setback requirements, owner-occupancy may be required. Building permits required for any habitable structure. Storm shelter/safe room may be a consideration for ADU design. HOAs may restrict or prohibit ADUs.
Unpermitted ADU: standard building code enforcement. May require demolition or legalization. Occupying unpermitted dwelling: code violation.
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Side-by-side rule comparisons with other cities in Tulsa County.
See how other cities in Tulsa County handle adu rules.
See how Tulsa's adu rules rules stack up against other locations.
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