Why the cap binds harder on a district than on a county

That was the argument behind SB 230, and it is a reasonable one. A county's infrastructure obligations grow roughly with its population. A district serving a subdivision under active construction takes on new roads, new water main and new sewer as lots are built out, and its obligations can grow far faster than three percent a year while its revenue cannot.

The consequence of the bill's failure is that improvement districts stay inside the same three percent envelope as counties and municipalities through 2031. A fast-building covenant community served by a district has a hard ceiling on what the district can raise, whatever the infrastructure needs.

Where the district cannot fund the work, it does not disappear. It lands somewhere else — on a private association if one exists, on the developer, or on the lots by special assessment.

The district and the association compared

Worth setting out, because South Dakota communities use both and the differences are not cosmetic.

Collection. A district levies taxes, collected on the county tax roll with the enforcement machinery that carries. An association assesses under its declaration and collects by lien and lawsuit — our collections and liens page covers what that actually involves.

Governance. A district is a public body with an elected board and open-meeting obligations. An association's board answers to the declaration and, where incorporated, to the Nonprofit Corporation Act — which, as our piece on the frozen statutory landscape notes, was not amended in either recent session.

Revenue limits. A district is capped by statute at three percent through 2031. An association's assessment increase is governed by its declaration, and nothing in South Dakota law caps it at all.

That last contrast is the one to sit with. The public body has a statutory ceiling on what it can raise. The private body, charging the same households for the same kind of infrastructure, has none.

The related structure: road districts

SDCL chapter 31-12A road districts are the narrower cousin, covering roads alone. A 2024 Attorney General opinion addressed them directly, holding that a county board “has no discretion to deny the formation of a road district if the provisions of SDCL ch. 31-12A have been complied with,” and that overlapping districts are not permitted because property owners “could be subject to taxes or assessments from each road district for the same services.”²

Under SDCL 31-12A-12 a road district is “a political subdivision of the State,” and under SDCL 31-12A-21 it may levy taxes and special assessments. Our piece on that opinion covers it in full.

One more district worth knowing about

Dakota Dunes, in Union County, is an unincorporated community run by the Dakota Dunes Community Improvement District — a five-member elected board of supervisors with a full-time manager and staff, operating, in the district's own description, similarly to a municipality. It passes numbered ordinances on parks and public spaces, solicitors, fishing, dogs at large, and water and sewer rates.

Residents there get association-style amenity and appearance governance delivered through a public body: the rules are ordinances, the board is elected rather than developer-appointed, and rate increases arrive after two readings and a public hearing rather than as a special assessment vote.

It is the clearest working example in South Dakota of the alternative structure, and the reason SB 230's quiet death is worth noticing.

What to watch next

The cap runs through taxes payable in 2031, so the pressure that produced SB 230 has five more years to build. A 6-0 table with no floor vote is not a considered rejection of the policy; it is a bill that never got argued. Expect it back, and expect it to be better sponsored if a district actually runs out of room.