Accessory Structures in Sioux Falls, SD (2026)
9 verified accessory structures rules for Sioux Falls, South Dakota, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Sioux Falls permits accessory dwelling units (ADUs) in certain residential zones under the revised zoning ordinance. ADUs may be attached to or detached from the primary dwelling and must meet size, setback, and parking requirements.
Sioux Falls Accessory Dwelling Unit Rules
Some RestrictionsADU Permits
Sioux Falls permits Accessory Dwelling Units (ADUs) under Article 15.20 of the Shape Places Zoning Ordinance (Title 16, Code of Ordinances). Both attached and detached ADUs are allowed in most residential zoning districts where a single-family dwelling is permitted. ADUs require a building permit through Planning and Development Services and must comply with the 2018 International Building Code/IRC as adopted by South Dakota Codified Laws (SDCL) Chapter 11-10 and locally adopted in Sioux Falls Code Chapter 150.
Sioux Falls ADU Permits (Shape Places Zoning Ordinance Article 15.20)
Some RestrictionsADU Impact Fees
South Dakota does not authorize traditional municipal development impact fees in the manner California, Washington, or Idaho do. Sioux Falls charges building permit fees under Code Chapter 150 plus water and sanitary sewer connection charges under Code Chapters 53 (Water) and 54 (Sewer) if new utility taps are installed. There are no parks, transportation, or school impact fees on ADU construction in Sioux Falls.
Sioux Falls ADU Impact Fees (No Traditional Impact Fees — Permit + Connection Fees Only)
Few RestrictionsADU Owner Occupancy
Sioux Falls does not impose a citywide owner-occupancy requirement on ADU properties under Title 16 Article 15.20 of the Shape Places Zoning Ordinance. Property owners may build an ADU on a rental property and lease both units to separate tenants. Short-term vacation rental use of an ADU triggers the residential rental permit under §159.303 (more than 14 days/year). HOA covenants under SDCL Title 43 may still impose private residency restrictions.
Sioux Falls ADU Owner-Occupancy (No Citywide Owner-Occupancy Mandate)
Few RestrictionsADU Rental Restrictions
Sioux Falls allows ADUs to be rented as long-term housing without a city permit. Short-term vacation rental use (more than 14 days per year on a daily/weekly basis) requires the $50 residential rental permit under Code §159.303 and registration with the South Dakota Department of Revenue. South Dakota has no statewide rent control and no statewide STR preemption. Tenancies of more than one month fall under SDCL Title 43 Chapter 32 (Landlord and Tenant).
Sioux Falls ADU Rental Rules (Long-Term Allowed; STR Requires §159.303 Permit)
Some RestrictionsShed Rules
Sioux Falls allows residential sheds and accessory buildings with size and setback requirements. Sheds under 200 square feet generally do not require a building permit. Larger structures require permits and must meet zoning setback requirements.
Sioux Falls Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Converting a garage to living space in Sioux Falls requires a building permit and must meet residential building code standards. The conversion must maintain required off-street parking. Zoning approval may be needed if the conversion changes the dwelling unit count.
Sioux Falls Garage Conversion Rules
Some RestrictionsCarport Rules
Sioux Falls requires carports and other detached accessory structures to meet setback standards based on their location relative to the primary building and property lines, regulated under Chapter 160 Zoning.
Residential Carport and Accessory Building Placement Rules
Some RestrictionsTiny Homes
Sioux Falls has no separate tiny-home ordinance. Tiny houses on a permanent foundation must meet the 2021 International Residential Code adopted under Chapter 150 of the city code, and may be sited as accessory dwelling units (ADUs) under §159.305. Tiny houses on wheels (RVs) cannot be used as permanent dwellings.