Sleep v. Steele: Partnership Formation Under SDCL 48-7A-202 Is Reviewed De Novo (with Clear-Error Deference to Underlying Intent Findings)

1. Introduction

Sleep v. Steele, 2026 S.D. 31, is a family property and business-dispute appeal arising from siblings who inherited a ranch and a campground (collectively, the “Estate Property”). Plaintiffs/Appellees (the “Sleeps”) were led by Richard D. Sleep, who operated the ranch and campground for decades and annually paid his sister, Defendant/Appellant Gloria Sleep Steele, amounts tied to her ownership interest.

Two disputes drove the appeal: (1) whether Richard and Gloria formed a general partnership in operating the ranch and campground, and (2) whether they formed an enforceable contract for Richard to purchase Gloria’s interest in a cattle herd (80 head) for $60,000. The circuit court found no partnership and found an enforceable cattle-sale agreement. Gloria appealed both rulings.

The Supreme Court of South Dakota affirmed. Most notably, the Court clarified the appellate review framework for partnership formation under SDCL 48-7A-202: factual findings (including intent) are reviewed for clear error, but the ultimate legal conclusion whether those facts amount to partnership formation is reviewed de novo.

2. Summary of the Opinion

  • No partnership: The Court held that, although many facts were not disputed, determining whether a partnership was formed under SDCL 48-7A-202 is a mixed question. The circuit court’s underlying fact findings—especially on intent to associate as co-owners and the reality of control—were not clearly erroneous. On those facts, the Court agreed (de novo) that no partnership existed.
  • Enforceable cattle-sale contract: The Court held that mutual assent supported an enforceable contract for Richard to buy Gloria’s cattle interest for $60,000, affirming the circuit court’s finding that Gloria agreed and later attempted to disavow.
  • Dissent (partial): Justice Devaney (joined by Justice Salter) agreed on the no-partnership holding but would reverse on the cattle-sale issue, concluding the circuit court clearly erred because the trial record did not support a finding that Gloria offered to sell her cattle separately from an overall settlement.

3. Analysis

A. Precedents Cited

1) Standard of review for mixed questions

The Court grounded its standard-of-review approach in In re Est. of Simon, 2024 S.D. 47 and Stockwell v. Stockwell, 2010 S.D. 79. From these cases, the Court drew the organizing principle: some mixed questions are “essentially factual” (clear-error review), while others require applying legal concepts and value judgments (de novo review). The Court placed partnership formation under SDCL 48-7A-202 in the latter category—reviewed de novo—while preserving clear-error review for predicate findings (e.g., intent).

2) Partnership formation—no “arbitrary test”

Relying on McGregor v. Crumley, 2009 S.D. 95, which quoted Ins. Agents, Inc. v. Zimmerman, 381 N.W.2d 218 (S.D. 1986), the Court reiterated that there is “no arbitrary test” for partnership existence and each case turns on its “peculiar facts.” The Court used these authorities to justify the circuit court’s granular, multi-factor factfinding, and to reject Gloria’s effort to elevate any single indicator (such as tax filings) into a dispositive test.

3) Interpreting the UPA phrase “whether or not the persons intend to form a partnership”

The Court relied heavily on Ziegler v. Dahl, 691 N.W.2d 271 (N.D. 2005) and the Uniform Partnership Act § 202, cmt. 1 (1997) to explain that the UPA does not eliminate the need for intent in the relevant sense. The phrase does not mean parties form a partnership without intending to associate as co-owners carrying on a business for profit; rather, it means parties can “inadvertently” create a partnership even if they subjectively disclaim wanting the legal label “partnership,” so long as their relationship satisfies the statutory elements.

4) Control as an objective indicator of co-ownership

The Court cited In re KeyTronics, 744 N.W.2d 425 (Neb. 2008), Gangl v. Gangl, 281 N.W.2d 574 (N.D. 1979), and Ziemann v. Grosz, 10 N.W.3d 801 (N.D. 2024) to reinforce that “control sharing” and the “right to exercise control” are key indicia of partnership. These cases supported the Court’s distinction between partnership co-ownership and “passive co-ownership of property,” consistent with the UPA commentary and SDCL 48-7A-202(c)(1).

5) Intent as a factual issue

In addressing the appellate posture of intent, the Court relied on In re Est. of Simon, 2024 S.D. 47, which in turn cited Pullman-Standard v. Swint, 456 U.S. 273 (1982), to emphasize that intent determinations are commonly treated as factual matters for the trier of fact, reviewed only for clear error. This undercut Gloria’s argument that the largely undisputed record required de novo reweighing of intent.

6) Contract formation and mutual assent

On the cattle-sale issue, the Court used Nelson v. Est. of Campbell, 2023 S.D. 14 (quoting Harvey v. Reg'l Health Network, Inc., 2018 S.D. 3) and Alexander v. Est. of Hobart, 2025 S.D. 39 to frame review: existence of a contract is a question of law reviewed de novo. But it simultaneously emphasized, through Paweltzki v. Paweltzki, 2021 S.D. 52, that when a “meeting of the minds” is disputed, it is a fact question for the circuit court.

Substantively, the Court anchored mutual assent in Suvada v. Muller, 2022 S.D. 75 (quoting Jacobson v. Gulbransen, 2001 S.D. 33) and statutory consent provisions, including SDCL 53-3-1 and SDCL 53-3-3.

7) Authorities raised but not decided (UCC)

The majority noted, via Albrecht v. Fettig, 932 N.W.2d 331 (Neb. 2019), that some courts treat cattle sales as UCC Article 2 “goods” transactions, but the parties did not brief UCC applicability. The Court declined a “technical UCC analysis,” reasoning mutual assent principles would govern either way.

8) Dissent’s clear-error critique

Justice Devaney’s dissent invoked Fuoss v. Dahlke Fam. Ltd. P'ship, 2023 S.D. 3 to articulate the clear-error standard (“definite and firm conviction that a mistake has been committed”) and applied it to the circuit court’s cattle-sale findings, emphasizing the absence of evidence that Gloria made an offer to sell. The dissent also referenced Kreisers Inc. v. First Dakota Title Ltd. P'ship, 2014 S.D. 56 only to define a “1031 exchange” that appeared in the record.

B. Legal Reasoning

1) The Court’s two-layer review model for partnership formation

The Court separated (i) the historical facts (who controlled operations, how money moved, what communications occurred, and whether the parties intended to associate as co-owners) from (ii) the legal conclusion whether those facts satisfy SDCL 48-7A-202. It held that partnership formation “requires us to consider legal concepts in the mix of fact and law and to exercise judgment about the values that animate legal principles,” and therefore the existence of partnership is reviewed de novo—but only after accepting any non-clearly-erroneous findings.

2) Applying SDCL 48-7A-202 to long-term family co-ownership

The Court treated the dispute as a classic problem under SDCL 48-7A-202(c): co-owners may share profits or returns from property without becoming partners. The opinion emphasized several statutory guardrails:

  • SDCL 48-7A-202(c)(1): tenancy in common/part ownership “does not by itself establish a partnership,” even with shared profits.
  • SDCL 48-7A-202(c)(2): sharing “gross returns” does not by itself establish partnership.
  • SDCL 48-7A-202(c)(3): a person receiving “a share of the profits” is presumed a partner unless the payment fits exceptions (including rent).

The Court credited the circuit court’s findings that Richard exercised sole operational control, while Gloria did not participate in management and did not bear losses. These findings, in the Court’s view, supported a characterization of payments as distributions from co-owned property (and later as rent) rather than evidence of a joint, co-managed business enterprise.

3) Why partnership tax filings and “partner” labels were not decisive

Gloria relied on decades of partnership tax returns (Form 1065) and K-1s, plus occasional references to “partner,” as objective proof of partnership. The Court accepted the circuit court’s evaluation that these facts could be explained consistently with non-partnership co-ownership and tax-handling choices, particularly where other core partnership attributes—shared control, shared risk of loss, and demonstrated intent to associate as co-owners—were missing.

4) Cattle-sale contract: deference to the circuit court’s “meeting of the minds” finding

On the second issue, the Court treated the legal question (contract existence) as de novo, but effectively found the dispositive dispute was factual: whether Gloria and Richard reached mutual assent. The Court concluded the circuit court permissibly rejected Gloria’s narrative that no deal was final without a global settlement. Because the circuit court found assent, the Court held an enforceable contract existed.

The dissent, by contrast, read the record as containing no conflict on the key point—both parties allegedly testified only that they agreed on price, not on a separate sale—and therefore viewed the circuit court’s inference of assent as clearly erroneous.

C. Impact

1) Appellate practice: clarified review standard for partnership formation

The opinion’s most durable doctrinal effect is procedural: it clarifies that partnership formation under SDCL 48-7A-202 will be treated as a mixed question in which (a) underlying factual findings are reviewed for clear error, but (b) the ultimate legal determination of partnership formation is reviewed de novo. This encourages litigants to focus appellate arguments on legal application (co-ownership versus co-ownership of a business) while recognizing that intent, control, and course-of-dealing findings will be difficult to overturn.

2) Substantive signals in family property disputes

The decision also signals caution against assuming that long-term informal arrangements among family co-owners create a partnership. Even extensive tax “partnership” paperwork and profit-like payments may not overcome evidence of sole control by one family member and passive ownership by another. Future litigants will likely treat “right to control” and actual control allocation as central partnership indicators, consistent with the out-of-state authorities the Court found persuasive.

3) Contract disputes: the importance of clear documentation in partial settlements

The cattle-sale holding (and the dissent) underscores a recurring settlement problem: parties negotiating a global resolution can create ambiguity about whether agreement on one component (e.g., a price) is binding absent agreement on the whole. The majority’s affirmance suggests circuit courts retain substantial factfinding authority to infer mutual assent from conduct (e.g., tender of checks and subsequent communications), even where one party characterizes negotiations as “not final.”

4. Complex Concepts Simplified

  • Partition: A court-supervised division of co-owned property (or its sale and division of proceeds) when co-owners cannot agree.
  • General partnership (UPA / SDCL 48-7A-202): A relationship formed when two or more persons associate to carry on as co-owners a business for profit. Parties can form one unintentionally (i.e., without intending the label), but they still must intend to participate in the kind of relationship that includes co-ownership of a business (not merely co-ownership of property).
  • Tenancy in common: A form of co-ownership of property. Under SDCL 48-7A-202(c)(1), co-ownership alone—even with shared profits from the property— does not establish partnership.
  • Form 1065 and Schedule K-1: IRS forms used to report partnership income and each “partner’s” share. Their use may be evidence of partnership, but it is not conclusive if the underlying relationship lacks essential partnership attributes (especially shared control/co-ownership of a business).
  • Mutual assent / meeting of the minds: Both sides must agree to the same essential terms in the same sense; if they are only negotiating, there may be no contract.
  • Standards of review:
    • Clear error: appellate court defers to trial court’s fact findings unless a mistake is firmly apparent from the record.
    • De novo: appellate court decides the legal question independently, without deference.
  • 1031 exchange: A “like-kind property exchange” that can defer taxes under 26 U.S.C. § 1031 (mentioned in the dissent’s factual narrative).

5. Conclusion

Sleep v. Steele affirms a circuit court’s determination that decades of shared family ownership and payments did not amount to a general partnership, emphasizing the statutory distinction in SDCL 48-7A-202 between passive co-ownership of property and co-ownership of a business for profit. The case’s clearest doctrinal contribution is its articulation of appellate review: partnership formation is reviewed de novo as a legal conclusion, while intent and other foundational facts remain protected by clear-error deference.

The split over the cattle-sale issue highlights the practical stakes of documenting partial agreements during global settlement negotiations. Whether viewed as a straightforward inference of assent (majority) or a clearly erroneous leap beyond the record (dissent), the dispute illustrates that clarity on which terms are final—and which are contingent—is often outcome-determinative.