Accessory Structures in Oklahoma (2026)
20 rules on the books across Oklahoma, 7 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
ADU Rules
Rules for building accessory dwelling units (granny flats, in-law suites) including size limits, parking requirements, and owner-occupancy rules.
Edmond
Significant RestrictionsEdmond defines a garage apartment as a one-family unit attached to a private garage, but only the D-1-NRC district's…
Read full rule →Tulsa
Significant RestrictionsTulsa allows ADUs like garage apartments and carriage houses, but RE, RS, AG, and AG-R lots need Board of Adjustment…
Read full rule →Broken Arrow
Some RestrictionsBroken Arrow allows one attached or detached accessory dwelling unit per lot in agricultural and residential zoning…
Read full rule →Lawton
Some RestrictionsLawton allows a garage apartment, a self-contained dwelling unit built above a private garage, as a permitted use…
Read full rule →Midwest City
Some RestrictionsMidwest City's zoning code allows attached or detached accessory dwelling units but caps their size at half the main…
Read full rule →Norman
Some RestrictionsNorman's R-1 Single-Family Dwelling District allows one accessory dwelling unit per lot, capped at 650 square feet…
Read full rule →Oklahoma City
Some RestrictionsOklahoma City Ordinance 27847 amended Chapter 59 (Zoning) to allow Accessory Dwellings as a conditional use in R-1…
Read full rule →ADU Owner Occupancy
Whether the property owner must live on-site to operate an ADU, deed-restriction requirements, and recent state-law changes lifting owner-occupancy rules.
ADU Rental Restrictions
Whether an ADU can be rented short-term (Airbnb), 30-day minimums, separate rental licenses, and long-term lease requirements.
Shed & Carport Rules
When a storage shed or carport needs a permit, the square-footage exemption thresholds, and the setback and height limits that apply either way.
Midwest City
Significant RestrictionsMidwest City caps accessory buildings and sheds at 750 square feet on lots of 10,000 square feet or less, requires a…
Read full rule →Broken Arrow
Some RestrictionsBroken Arrow's Zoning Ordinance lets a private garage or carport project into a required setback only along a public…
Read full rule →Edmond
Some RestrictionsEdmond caps residential accessory structures like sheds at 20% of the home's floor area or 600 square feet, whichever…
Read full rule →Lawton
Some RestrictionsDetached sheds and accessory buildings in Lawton need a building permit once set on a permanent foundation or built at…
Read full rule →Norman
Some RestrictionsA Norman shed only skips the building permit if it stays under 120 square feet, sits off any slab or foundation, and…
Read full rule →Oklahoma City
Some RestrictionsOklahoma City requires a building permit for any carport and caps width at 12 feet for a single driveway or 24 feet for…
Read full rule →Tulsa
Some RestrictionsDetached sheds and other accessory buildings on Tulsa residential lots are capped at 750 sq ft in RE/RS-1 districts or…
Read full rule →Garage Conversions
Rules for converting a garage into living space, including whether you need to replace the lost parking and what building codes apply.
Midwest City
Some RestrictionsMidwest City lets homeowners convert a garage into a livable accessory dwelling unit, but only with enough lot area and…
Read full rule →Oklahoma City
Some RestrictionsOklahoma City's zoning code requires two off-street parking spaces plus a garage for every single-family and two-family…
Read full rule →Tiny Homes
Zoning rules for tiny houses on wheels and foundations, including minimum square footage requirements and where they can be placed.
Norman
Some RestrictionsNorman allows one tiny house per lot under NCC 36-561, capping floor area at 400 square feet excluding lofts. Every…
Read full rule →Tulsa
Some RestrictionsTulsa's Building Code adopts IRC Appendix Q, allowing free-standing tiny houses of 400 square feet or less to meet…
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