Contesting a South Dakota Guardianship Petition: A Guide for Siblings

Few family disputes are more emotionally charged than when one adult child secretly files a petition in Sioux Falls, Rapid City, or Aberdeen to take complete control over an aging parent's healthcare, nursing home placement, and multi-million-dollar family farm or retirement savings-excluding their brothers and sisters from the process. When long-standing sibling rivalries collide with a parent's cognitive decline from dementia or stroke, the race to the courthouse can result in an unfit, estranged, or financially motivated sibling seeking control over the parent's person and estate.

Navigating contesting a South Dakota guardianship petition: a guide for siblings requires immediate legal action during the brief statutory window before the circuit court enters a permanent order. Under the South Dakota Guardianship and Conservatorship Act, every adult child is an interested relative entitled to formal notice and the right to file a competing cross-petition or formal objection. Retaining a skilled South Dakota guardianship litigation lawyer from our directory gives you the courtroom advocacy needed to expose conflicts of interest, challenge a sibling's fitness, and ensure your parent's wishes and best interests come first.

Statutory Priority and Parent Nominations Under S.D. Codified Laws § 29A-5-304

When two or more siblings disagree over who should serve as a parent's guardian or conservator in South Dakota, the circuit court does not simply pick the oldest child or the sibling who filed their petition first. Instead, appointments are governed by S.D. Codified Laws § 29A-5-304 and S.D. Codified Laws § 29A-5-110:

• The Parent's Own Nomination Come First: Under S.D. Codified Laws § 29A-5-304, any individual who has sufficient capacity to form a rational preference may nominate a person or entity to act as their guardian or conservator-either orally in court or previously in a written Durable Power of Attorney executed under S.D. Codified Laws § 59-12-7. The circuit court must appoint the parent's chosen nominee unless the nominee is unqualified, unwilling, or the appointment would clearly not be in the parent's best interests.
• Considering Family Recommendations and Conflicts of Interest: Absent a valid nomination by the protected person, S.D. Codified Laws § 29A-5-304 directs the court to appoint the most suitable and qualified individual or entity after considering the recommendations of the spouse, adult children, and other interested relatives, the stability of the living arrangement, and the existence of any potential conflicts of interest.
• Broad Judicial Discretion: As the South Dakota Supreme Court reaffirmed in In re Guardianship of Jacobsen, 482 N.W.2d 634 (SD Supreme Court 1992) and In re Conservatorship of Gaaskjolen, 844 N.W.2d 99 (SD Supreme Court 2014), subject to statutory restrictions, the selection of the person to be appointed guardian or conservator is committed largely to the sound discretion of the appointing circuit court and will only be reversed on appeal for an abuse of discretion.

Proving a Sibling Is Unfit to Serve as Guardian or Conservator in South Dakota

To successfully block an untrustworthy sibling from taking control of your parent's medical care or finances in courts such as the Minnehaha County Circuit Court, Second Judicial Circuit, Sioux Falls or the Pennington County Circuit Court, Seventh Judicial Circuit, Rapid City, your objection must go beyond general family grievances and focus on concrete statutory disqualifications under S.D. Codified Laws § 29A-5-110.

Past Bankruptcies, Foreclosures, and Credit Disqualifications

When evaluating a proposed conservator's financial fitness, the court closely examines credit standing when requiring a bond under S.D. Codified Laws § 29A-5-111. Under this statute, courts routinely require a conservator to post a corporate surety bond covering the value of the parent's liquid assets plus one year's income. If your sibling has a history of Chapter 7 or Chapter 13 bankruptcy, civil tax liens, unpaid judgments, or poor credit, commercial surety underwriters will refuse to bond them-providing a powerful, objective basis to disqualify them from managing your parent's money.

Felony Convictions and Mandatory Fingerprint Background Checks

South Dakota enforces strict criminal eligibility screening for prospective fiduciaries. Under S.D. Codified Laws § 29A-5-110, no individual who has been convicted of a felony-or any crime involving fraud, theft, dishonesty, physical abuse, neglect, or financial exploitation of a vulnerable adult-may be appointed as a guardian or conservator unless the circuit court enters a specific waiver finding that the protected person's best interests would still be best served by that individual. Under S.D. Codified Laws § 29A-5-110, every nominee must submit to a state and federal fingerprint-based criminal background check through the Division of Criminal Investigation and Federal Bureau of Investigation unless waived by the court for good cause.

Estrangement, Self-Dealing, and Isolation of the Parent

Even if a sibling has a clean criminal record and decent credit, South Dakota judges closely scrutinize evidence of family estrangement and financial self-dealing under S.D. Codified Laws § 29A-5-304. Key red flags that persuade circuit judges to reject a sibling's petition include:

• Financial Conflicts of Interest: A sibling who owes money to the parent, rents the parent's agricultural land at below-market rates, or coerced the impaired parent into signing suspicious deeds or joint bank account cards has a disqualifying conflict of interest.
• Long-Term Estrangement: If a sibling had minimal contact with the parent for years and suddenly reappeared only after the parent inherited money or developed dementia, the court will weigh the testimony of local siblings who handled daily medical care.
• Weaponizing Visitation: If a sibling moves the parent into their home and immediately blocks brothers, sisters, and grandchildren from visiting or speaking on the phone, your attorney can prove that appointing that sibling will destroy the parent's emotional well-being.

Mediation, Evidentiary Hearings, and the 'Best Interests' Standard

When a sibling files a formal objection or competing cross-petition in a South Dakota Circuit Court, the proceeding shifts from a routine administrative review into a contested civil bench (or jury) trial governed by the Rules of Civil Procedure and S.D. Codified Laws § 29A-5-312.

• Role of the Court Representative and Court-Appointed Counsel: Under S.D. Codified Laws § 29A-5-309 and S.D. Codified Laws § 29A-5-310, when a guardianship is contested, the judge typically appoints an independent attorney to advocate for the parent's wishes and/or a neutral 'court representative' to investigate the family dynamics, inspect the proposed living environments, interview all siblings, and file a written recommendation with the court.
• Court-Ordered Family Mediation: Before holding a multi-day contested trial, many South Dakota circuit judges refer warring siblings to private mediation. In mediation, siblings frequently negotiate structured settlements-such as appointing a neutral professional fiduciary (a South Dakota bank trust department or a qualified nonprofit agency under S.D. Codified Laws § 29A-5-110) as conservator of the money, while establishing a co-guardianship or a guaranteed sibling visitation schedule and mandatory 24-hour medical notification protocol.
• How Judges Determine the 'Best Interests' of the Parent: If mediation fails and the case proceeds to an evidentiary hearing under S.D. Codified Laws § 29A-5-312, the judge evaluates the parent's 'best interests' by balancing maximum feasible self-reliance, continuity of medical care, preservation of family relationships, and freedom from financial exploitation. When intractable hostility between siblings makes co-guardianship unworkable, South Dakota judges frequently bypass all competing siblings and appoint an independent third-party nonprofit or trust company, or the South Dakota Department of Human Services, Pierre (when statutory criteria under S.D. Codified Laws § 29A-5-110 are met).

Step-by-Step Process for Siblings to Contest a Guardianship in South Dakota

Step 1: Audit the 14-Day Notice of Hearing and Demand the Petition Packet

Under S.D. Codified Laws § 29A-5-308, your petitioning sibling must mail notice of the guardianship hearing to all adult children of the parent at least 14 calendar days prior to the hearing. If you discover a sibling secretly filed a petition in the Brown County Circuit Court, Fifth Judicial Circuit, Aberdeen or the Minnehaha County Circuit Court, Second Judicial Circuit, Sioux Falls without serving you, your attorney can immediately move to halt the hearing because failure to serve required notice under S.D. Codified Laws § 29A-5-308 is a jurisdictional defect.

Step 2: File a Written Objection and Competing Cross-Petition

Do not wait until the morning of the hearing to voice your concerns orally. Have your lawyer draft and file a formal Written Objection to Appointment alongside a competing petition for appointment of a guardian and conservator under S.D. Codified Laws § 29A-5-305 nominating yourself (or an independent South Dakota trust company) to serve. Simultaneously complete your own mandatory training and file an affidavit or certificate of completion of guardian and conservator training certified through the State Bar of South Dakota under S.D. Codified Laws § 29A-5-119 so you are legally eligible for immediate appointment.

Step 3: Request an Independent Medical Evaluation Under S.D. Codified Laws § 29A-5-309

If you believe your sibling exaggerated your parent's dementia or shopped for a one-sided medical note to strip your parent of autonomy, invoke S.D. Codified Laws § 29A-5-309 to obtain an independent medical or psychological evaluation by a specialist of your choosing.

Step 4: Conduct Civil Discovery and Subpoena Financial & Background Records

In a contested guardianship proceeding, your attorney can issue civil subpoenas for the petitioning sibling's joint bank records with the parent, demand full compliance with the S.D. Codified Laws § 29A-5-110 fingerprint criminal background check and financial qualification requirements under S.D. Codified Laws § 29A-5-111, and depose witnesses who observed undue influence or isolation.

Step 5: Engage With the Court Representative and Explore Mediation

Provide the court-appointed investigator (S.D. Codified Laws § 29A-5-310) with an organized binder containing prior Durable Powers of Attorney, caregiving logs, emails showing your sibling's hostility or estrangement, and financial records. If the court orders mediation, negotiate for concrete safeguards such as a neutral corporate conservator and binding sibling visitation rights.

Step 6: Litigate the Evidentiary Hearing Before the Circuit Court Judge

At the contested hearing under S.D. Codified Laws § 29A-5-312, your attorney will cross-examine the petitioning sibling and their witnesses, present testimony from healthcare providers and family members, and argue why appointing you or an impartial third-party fiduciary best serves your parent's welfare under S.D. Codified Laws § 29A-5-304.

How Much Does it Cost in South Dakota?

Contesting a sibling's guardianship or conservatorship petition in South Dakota involves the following typical litigation expenses:

• Filing an Objection or Cross-Petition: Filing a written objection in an existing South Dakota guardianship docket generally carries a $0 to $25 fee, while filing a competing cross-petition or a post-appointment Form UJS-151, South Dakota, Unified Judicial System, Interested Person's Petition to Modify, Revoke, or Terminate Guardianship costs between $50 and $95.
• Independent Medical Evaluation & Mediation Costs: Retaining an independent geriatric neuropsychologist under S.D. Codified Laws § 29A-5-309 typically costs $800 to $2,200, and private half-day or full-day family mediation costs $1,000 to $2,500 (usually split among the parties or paid by the estate).
• Contested Guardianship Attorney Fees: South Dakota guardianship litigation attorneys generally charge between $250 and $425 per hour. Negotiating a mediated sibling settlement typically requires $2,500 to $5,000, while taking a contested evidentiary hearing through discovery and trial generally ranges from $6,000 to $15,000+. Under S.D. Codified Laws § 29A-5-116, the court has discretion to order that attorney fees necessarily incurred to protect the parent's estate be reimbursed from the estate.

How Long Does the Process Take?

Under S.D. Codified Laws § 29A-5-308, an initial guardianship hearing must be scheduled within 60 calendar days of the notice of filing, with siblings receiving at least 14 days advance notice. However, when a sibling files a formal objection and competing cross-petition, the circuit court typically holds an initial scheduling conference at the 30- to 60-day mark (sometimes appointing a neutral temporary guardian under S.D. Codified Laws § 29A-5-315 to maintain the status quo) and sets an evidentiary trial date. A contested sibling guardianship dispute in South Dakota typically takes 3 to 6 months to resolve through discovery, court representative investigation, mediation, and a final evidentiary hearing.

Frequently Asked Questions (FAQ)