Sleep v. Steele — South Dakota Supreme Court affirms no partnership between co-inheriting siblings and upholds cattle-sale contract

Case
Richard D. Sleep, et al. v. Gloria Sleep Steele, a/k/a Gloria G. Steele, and Steele Real Estate, LLC
Court
Supreme Court of South Dakota
Judge
MYREN (Kristi Noem, 2020)
Date Decided
May 20, 2026
Docket No.
31120 (2026 S.D. 31)
Topics
General Partnership Formation, Contract Formation, Co-Ownership, Agricultural Property
Source
Read the full opinion

Background

When Eugene Sleep died intestate in 1967, his two children — Richard Sleep and Gloria Steele — each inherited a one-third interest in Sleep Ranch and Iron Creek Lake campground in Lawrence County, South Dakota (their mother Ruth held the remaining third until Richard bought her out in 1975). From that point forward, Richard alone managed both operations: he controlled the bank accounts, made all day-to-day decisions, paid the bills, and covered operating losses from reserves. He distributed a proportionate share of proceeds to Gloria each year, accompanied by a Schedule K-1, and filed Form 1065 partnership tax returns on the advice of an accountant who believed tenants in common were required to do so. Gloria played no role in daily management, made no capital contributions, and did not share in losses.

In the early 2000s the siblings began negotiating a global buyout of Gloria’s interest in the estate property — real estate, cattle, and equipment. In December 2003, Richard delivered a $60,000 check to Gloria labeled “80 mixed age cows.” Gloria did not cash it. She later wrote that she was returning the check “until we have an opportunity to complete the tax file information and have a purchase agreement drawn for the cattle,” and in a 2008 letter stated that no separate cattle sale had ever been agreed to.

In 2018, Richard filed suit seeking partition of the estate property and a declaration that no partnership existed. Gloria counterclaimed, asserting partnership and arguing that any cattle sale required agreement on the entire estate. The circuit court bifurcated the issues, held separate trials, and ruled for Richard on both: no partnership had been formed, and an enforceable contract for the cattle sale existed. Gloria appealed both rulings.

The Court’s Holding

On the partnership question, the South Dakota Supreme Court held that whether a partnership was formed under SDCL 48-7A-202 is a question of law reviewed de novo, even though the underlying factual findings — including the parties’ intent — are reviewed for clear error. Affirming the circuit court’s 47 detailed findings of fact, the majority concluded that no partnership existed. The decisive factors were Richard’s exclusive, unchallenged control over every aspect of the operations; Gloria’s complete non-participation in management; her failure to contribute capital or share in losses; and the parties’ own repeated, explicit disclaimers of any partnership intent — including a proposed lease Gloria herself drafted stating “no partnership intended.”

On the cattle-sale contract, the majority (three justices) affirmed the circuit court’s finding that Gloria had assented to sell her 80-head interest for $60,000, only to attempt to rescind after the fact. The court applied de novo review to the legal question of contract existence, but deferred to the circuit court’s factual finding of mutual assent under the clearly erroneous standard, concluding that the circuit court was entitled to credit Richard’s account and reject Gloria’s claim that the $60,000 figure was merely a valuation step within a larger, incomplete negotiation.

Justices Salter and Devaney concurred on the partnership issue but dissented on the cattle contract. The dissent argued that Richard’s own trial testimony — in which he acknowledged that Gloria never agreed to sell the cattle “separate and apart from the land and the equipment,” and that they “never reached an agreement on the land or the equipment” — fatally undermined any finding of mutual assent. In the dissent’s view, agreement on price alone does not constitute a contract when the parties were plainly negotiating a global settlement, and the circuit court’s characterization of Gloria’s 2004 letter as an admission that a deal had been reached was clearly erroneous.

Key Takeaways

  • Partnership formation under the Uniform Partnership Act is a question of law for de novo appellate review; the underlying intent inquiry is a factual question reviewed for clear error.
  • Sole and exclusive control by one co-owner is powerful evidence against partnership — shared ownership of property and proportionate profit distributions, standing alone, do not establish co-ownership of a business for UPA purposes.
  • Filing Form 1065 partnership tax returns does not create a partnership, particularly where the filer believed it was legally required for tenants in common and the co-owner had no input into that decision.
  • Agreement on price for one asset during multi-asset estate negotiations may not constitute an enforceable stand-alone contract — the dissent’s analysis illustrates the risk of treating price consensus as a completed deal when both parties understood they were negotiating a comprehensive settlement.

Why It Matters

Sleep v. Steele is a practical guide for attorneys advising co-inheriting siblings who operate family farms, ranches, or other closely held assets without formal documentation. It confirms that decades of profit-sharing, joint tax filings, and informal “partner” language in correspondence will not transform a co-tenancy into a general partnership if one party exercises unilateral management control and the other makes no capital contributions or management decisions. Attorneys should counsel clients to execute clear leasing or co-tenancy agreements — and to avoid partnership tax filings unless a partnership is actually intended — to prevent the very ambiguity that drove eight years of litigation here.

The 3-2 split on the cattle-sale issue is equally instructive. When parties are negotiating a global buyout of family property interests, partial performance on a single asset (delivering a check) does not guarantee an enforceable piecemeal contract if the surrounding context shows the parties understood the negotiations as a package deal. Practitioners should ensure that any interim agreements reached during complex estate settlements are documented separately and explicitly address whether they stand alone or are conditioned on a comprehensive resolution.

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