Experienced Attorneys serving all of your legal needs throughout South Dakota.

The Law Office of Helsper, McCarty, Mahlke, and Kleinjan, P.C. represents individuals and business entities seeking counsel on civil, domestic, and criminal matters from our law office located in Brookings, SD. We also represent banks with bankruptcy and/or foreclosure issues and business entities in complex commercial litigation. Our attorneys also practice in a number of areas such as insurance defense, banking and commercial litigation and all aspects of utility regulation.

Because of the size of our firm, we are flexible and able to provide a close and discrete working relationship with our clients. With this close working relationship, we are able to assure the services provided will meet the needs of the client on a prompt basis.

We provide a full array of legal services to business and individuals including:

  • Personal Injury & Wrongful Death
  • Workers' Compensation
  • Social Security Disability
  • Criminal Law
  • Family Law
  • Estate Planning
  • Probate & Trust Administration
  • Real Estate
  • Business & Corporate Law
  • Income Tax


There are many important decisions in life which require the special skills and attentiveness that only an attorney can provide. Our attorneys will handle your concerns with respect and efficiency and will vigorously advocate on your behalf. Contact our office today to discuss all of your legal needs. 


All information on this site is designed to be predominantly informational.

Helsper, McCarty, Mahlke, & Kleinjan, P.C. is a general practice law firm practicing in areas including, but not limited to, business law, agricultural law, civil litigation, commercial litigation, criminal law, estate planning, constitutional law, administrative law, family law, insurance law, personal injury, contracts, real estate, and utility regulation.

Attorneys licensed in South Dakota and Iowa.


415 8th Street South
Brookings, SD 57006
(605) 692-7775

Call Us: 605-692-7775

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