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Practice Areas
Blog 
Auto Accident
- Monitoring and Talking to South Dakota Teen Drivers Can Reduce Risks
- How South Dakota Truck Accidents are Caused by Depowering Brakes
- Sioux Falls Personal Injury Lawyer Can Win Your Insurance Dispute
- South Dakota Car Crash with Deer: Are you Covered?
- How a South Dakota Personal Injury Attorney Proves Trucker Negligence
Business Litigation
- "But I Signed the Contract..."
- "But it's not in writing...."
- Contractors Beware! Careless Mistakes Can Cost You Your Mechanic's Lien
- An Ounce of Prevention....
Criminal Defense
- Avoid a Third South Dakota DUI, Avoid a Felony Conviction
- South Dakota DUI Second Offense Treated as First under Washout Period
- Should you take a breathalyzer if stopped for a South Dakota DUI?
- SD Supreme Court: Delay At Stop Sign Not Enough Justification To Stop Car
- Wrongful Convictions And The Presumption Of Innocence
Will Contest
- Steps for Avoiding South Dakota Will Contests
- How to Bring an Undue Influence Claim in a South Dakota Will Contest
- What You Need to Know to Create a Valid Will in South Dakota
- How to Contest an Oral Lease Made Prior to Death in South Dakota
- What to Know When Hiring a South Dakota Will Contest Lawyer
"Less Legalese, Please," by Daniel K. Brendtro
- Courts Follow Unique Set of Rules for Estate Cases
- Deadline Pushers Litigate at Own Risk
- Juries Don't Often Hear the Whole Story
- Court Wields Power for the Powerless
- Defendant Questions Life Sentence for Car Crash
SD Law Blog
- SD Law Blog: Defendant's Status as Municipality Employee Does Not Preclude Liability
- New SD Supreme Court Case: Medical Expenses Go Hand in Hand with Pain and Suffering Damages
- New SD Supreme Court "Slip and Fall" Decision
- Read the Fine Print!
- SD Supreme Court Wrongful Death Suit
General
News
- Driver Flees Five-Vehicle Crash in Rapid City, Alcohol & Speed Factors...
Posted on 2/5/2012 - I-90 South Dakota SUV Crash Claims Life of One and Injures Two...
Posted on 2/4/2012 - Fatal Motor Vehicle Accident in Huron Claims Life of Pickup Driver...
Posted on 11/26/2011 - South Dakota Transportation Department Warns of Crashes with Plows...
Posted on 11/22/2011 - South Dakota Resident Killed While Helping Others Involved in Crash...
Posted on 11/21/2011
Library
Auto Accident
- South Dakota Personal Injury Lawyer Notes Aspects of Insurance Policy
- Truck Equipment Issues are Issues for All on South Dakota’s Roads
- How a Sioux Falls Personal Injury Lawyer Can Help Your Insurance Claim
- Oh Deer, a South Dakota Attorney’s Tips for Avoiding Crashes with Deer
- South Dakota Personal Injury Attorney’s Key Steps for Elderly Drivers
Business Litigation
Criminal Defense
- Implications of Breathalyzer Results in South Dakota DUI Stops
- Did You Know That South Dakota Police Need An Actual Reason To Pull You Over
- Guilty Until Proven Innocent?
- Five Things You Should Not Do When You Are Facing Criminal Charges or Questioning
Will Contest
- Contesting a South Dakota Will Based on Undue Influence
- Proving “Unsound Mind” in South Dakota Will Contests
- South Dakota Will Contests: Transactions in Best Interest of Estate?
- Contesting a Will in South Dakota: What You Need to Know
- Estate Litigation Q&A: Understanding Basic Vocabulary
General
- Penalties from a South Dakota DUI Conviction Can Impact Your Life
- Fatal Impact of Truckers Driving Under the Influence in South Dakota
- Wondering who can create a will in South Dakota? We have answers.
- South Dakota Motorcycle Accidents Lead to Serious Personal Injuries
- Sharing the Road with Commercial Trucks in South Dakota
About Zimmer, Duncan & Cole, Attorneys at Law
Our law firm has deep roots in South Dakota. John Zimmer established the firm following his association with the Bogue family who had been practicing law in Parker, South Dakota, since the early 1900’s. The Hon. Andrew W. Bogue (1919-2009) served as a state court judge, and then as a federal district judge for almost forty years.
John Zimmer’s outstanding legal career included an extensive personal injury and insurance defense practice along with an extremely active and successful government relations (lobbying) practice. One of his best known clients was the Homestake Gold Mine.
Dennis Duncan joined the firm in 1974 and has practiced extensively in the area of governmental relations (lobbying), insurance defense, civil litigation as well as representing numerous clients before agencies and departments of state and local government in the State of South Dakota.
Jeff Cole joined the firm in 1992 and focuses his practice on personal injury, civil litigation, ERISA cases, and criminal defense. Jeff was elected twice as State's Attorney.
Drew Duncan joined the firm in 2003, and focuses his practice on governmental relations (lobbying), criminal law, health insurance law, personal injury, and family law.
Dan Brendtro joined the firm in 2009. He has an active business litigation practice and serves as outside general counsel to a number of local businesses.
Our firm has offices in Sioux Falls and Parker.
John Zimmer’s outstanding legal career included an extensive personal injury and insurance defense practice along with an extremely active and successful government relations (lobbying) practice. One of his best known clients was the Homestake Gold Mine.
Dennis Duncan joined the firm in 1974 and has practiced extensively in the area of governmental relations (lobbying), insurance defense, civil litigation as well as representing numerous clients before agencies and departments of state and local government in the State of South Dakota.
Jeff Cole joined the firm in 1992 and focuses his practice on personal injury, civil litigation, ERISA cases, and criminal defense. Jeff was elected twice as State's Attorney.
Drew Duncan joined the firm in 2003, and focuses his practice on governmental relations (lobbying), criminal law, health insurance law, personal injury, and family law.
Dan Brendtro joined the firm in 2009. He has an active business litigation practice and serves as outside general counsel to a number of local businesses.
Our firm has offices in Sioux Falls and Parker.
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SIOUX FALLS
5000 S. Broadband Lane
Suite 107
Sioux Falls, SD 57108
Phone: 605-361-9840
Fax: 605-271-7872
Toll Free: 888-733-2992
Get Directions
PARKER
120 N. Main Street
P.O. Box 550
Parker, SD 57053
Phone: 605-297-4446
Fax: 605-297-4488
Toll Free: 888-733-2992
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FAQs
Auto Accident
- I was in a car accident and my Sioux Falls personal injury lawyer is disputing my bodily injury insurance payout with the insurance company. What type of documents will be needed?
- What steps can I take to prevent my teenage driver from being in a South Dakota car accident?
- What are some of the age-related warning signs for senior drivers in South Dakota?
Criminal Defense
- I have been convicted of a South Dakota DUI. What is an SR-22 filing?
- Is there a Statute of Limitations on South Dakota DUI convictions?
- What is the legal limit for my blood alcohol concentration (BAC) in South Dakota?
Will Contest
- How do I contest a South Dakota will based on undue influence?
- What are breaches of fiduciary duty in will contests?
- When should I make a will?
