Accessory Structures in South Dakota (2026)

5 rules on the books across South Dakota, 2 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.

Sioux Falls

Some Restrictions

Sioux Falls allows one detached accessory dwelling unit per single-family lot as a permitted special use, capped at 40%…

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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.

Sioux Falls

Some Restrictions

Sioux Falls allows one detached accessory dwelling unit per lot in its detached-dwelling zoning forms, but the primary…

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ADU Rental Restrictions

Whether an ADU can be rented short-term (Airbnb), 30-day minimums, separate rental licenses, and long-term lease requirements.

Sioux Falls

Some Restrictions

Sioux Falls allows a detached accessory dwelling unit on a single-family lot only if the owner lives in one of the two…

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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.

Minnehaha County

Some Restrictions

Minnehaha County exempts one-story detached tool and storage sheds, playhouses, and similar accessory structures up to…

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Sioux Falls

Some Restrictions

Sheds under 200 square feet skip a building permit but still need a zoning placement permit, and any detached accessory…

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