ADU Rules in South Dakota (2026)
ADU rules in South Dakota — no statewide ADU law. Regulation is entirely local. Key provisions and city-specific frameworks for accessory dwelling units.
Law Name
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
No — regulation is local
Statewide Preemption Status Unconfirmed
No statewide preemption statute was confirmed for this jurisdiction — regulation is local. Local governments retain full authority to set their own rules.
Local Control Framework
South Dakota does not have a statewide ADU law as of 2026 · Source
ADU regulation is left entirely to local municipalities · Source
South Dakota Codified Laws Chapter 11-4 (Zoning) grants municipalities authority over local zoning · Source
Sioux Falls, Rapid City, Aberdeen, and Brookings set their own local ADU and accessory dwelling rules · Source
South Dakota has a low-regulation tradition and many rural areas have minimal or no zoning · Source
Sioux Falls has been among the faster-growing cities in the Midwest, creating housing supply pressure but addressed through local action · Source
Source: South Dakota Local Zoning Authority. Last verified April 5, 2026. View source