Subdivision Development in Union County, SD: Dakota Dunes

Union County's Dakota Dunes is more than a large, well-known planned community -- it's organized as its own Community Improvement District, a special-purpose local government with an elected board and its own ordinances layered on top of Union County's zoning and subdivision rules. Anyone buying, building, or developing a lot inside Dakota Dunes is dealing with two governments at once; anyone developing elsewhere in the county deals with the standard county process alone.

This page covers what's specific to Union County. For the general explanation, see the national guide.

Dakota Dunes runs its own local government, not just an HOA

Dakota Dunes, the roughly 2,000-acre master-planned community in Union County's southeast corner, is organized as the Dakota Dunes Community Improvement District (CID) -- a special-purpose local governmental body that the community's own materials describe as operating similar to a municipality. It's governed by a five-member Board of Supervisors elected by residents, which employs a full-time district manager and staff to run day-to-day operations, and it is subject to the same state legislative-audit oversight as other South Dakota special districts. That's a materially different structure from a typical subdivision governed only by a homeowners' association and private covenants: a CID is a unit of local government with real regulatory and taxing authority over the area inside its boundary.

The CID actively exercises that authority through its own code of ordinances, maintained separately from Union County's zoning ordinance. Confirmed recent examples include Ordinance No. 2024-09 amending the CID's own building code, and a 2025 slate of ordinances covering water-rate increases (2025-01), sewer-rate increases (2025-02), and amendments to street and public-space regulations (2025-03). In practice, that means a lot or parcel inside Dakota Dunes can be subject to a CID-specific building code provision, water/sewer rate, or street standard that doesn't exist, and doesn't apply, anywhere else in Union County -- a subdivision developer or lot buyer here needs to check both the county's zoning and subdivision regulations and the CID's own current code of ordinances, available through the CID office rather than the county courthouse alone.

Still an active platting and lot-sales market, not a closed development

Dakota Dunes consistently accounts for the largest share of land actively listed for sale in Union County, and current listings show the development is still actively platting and selling, not simply reselling decades-old lots: recent inventory has included a 4.4-acre residential lot described as the largest available in the community, golf-course-fronting lots along the Dakota Dunes Country Club, and "shovel ready" lots carrying 75 feet of frontage with documented daylight-window potential -- language that reflects an active, engineered subdivision process (lot and block layout, utility coordination) rather than a static, fully built-out neighborhood. For anyone evaluating a subdivision-development opportunity in Union County specifically, Dakota Dunes is the concrete local precedent and, in practice, the most active submarket -- but it comes bundled with CID-level obligations (assessments, utility rates set by the CID board, and CID architectural or building-code review) that a comparable subdivision under county-only jurisdiction elsewhere in Union County would not carry.

Outside Dakota Dunes, subdivision development in Union County runs through the standard county process: the county's 2008 Revised Zoning Regulations and Subdivision Regulations (effective 2011), administered by the Planning & Zoning Department in Elk Point, govern plat review, conditional use permits, and variances for the rest of the county's unincorporated land. A developer weighing a new subdivision anywhere in Union County should confirm at the outset whether the parcel falls inside the Dakota Dunes CID boundary -- because that single fact determines whether one layer of local government applies to the project, or two.

Subdivision Development in Union County, South Dakota

Dakota Dunes runs its own local government, not just an HOA

Still an active platting and lot-sales market, not a closed development

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