Klass Law Firm LLP - Sioux City, IA office in Sioux City, Iowa
Klass Law Firm LLP - Sioux City, IA

Klass Law Firm LLP - Sioux City, IA

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4280 Sergeant Rd #290, Suite 290, Sioux City, Iowa, United States
109 Years of Practicing, since 1917
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Free Consultation +1 712-252-1866
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Klass Law Firm LLP is a premier, full-service regional law firm in Sioux City, Iowa, with a history spanning over a century. Known for strong litigation defense and personalized representation, the firm excels in workers' compensation, family law, insurance defense, and estate planning.

Over a Century of Reliable Trial Advocacy and Legal Counsel

Since its founding in 1917, Klass Law Firm LLP has maintained a strong reputation for serving clients in Iowa, Nebraska, and South Dakota with integrity and legal excellence. Based in Sioux City, with a secondary office in Sioux Center, our full-service law firm blends over 200 years of combined attorney experience to solve complex challenges for families, businesses, accident victims, and employers. Whether you are facing a workplace injury claim, dealing with a sensitive divorce, or defending a business in a commercial litigation suit, we work as a cohesive team to achieve optimal results. We pride ourselves on offering the personal attention of a small, focused firm combined with the powerful resources of a premier regional practice.

We believe that high-quality legal advice should be accessible, customized, and direct. When you hire an attorney from our firm, you are backed by accomplished advocates who are well-recognized in tri-state state and federal courts. Our attorneys combine deep analytical skill with assertive litigation tactics to safeguard your interests. We understand that legal disputes can disrupt your daily life and business operations, which is why we offer initial telephone consultations to discuss your case details and guide you down the right legal path. If you are seeking to find a workers' compensation defense attorney or a family lawyer in Sioux City, Klass Law Firm LLP is ready to assist you.

Specialized Practice Groups Built for Tri-State Families and Businesses

At Klass Law Firm LLP, our legal team manages structured practice groups to provide precise counsel for every client. Our core focus areas include:

  • Workers' Compensation: We represent injured workers and employers through the complex workers' compensation claims process, fighting for fair medical coverage and disability benefits.
  • Divorce and Family Law: Our compassionate family lawyers assist with divorce, child custody, child support modifications, parenting time, premarital agreements, and adoption proceedings.
  • Insurance Defense and Civil Litigation: We manage strong liability defense, auto accident litigation, professional negligence claims, and product liability disputes for regional insurers.
  • Estate Planning, Trusts and Probate: We draft comprehensive wills, establish trusts, manage probate estate administration, and assist with healthcare power of attorney documents.
  • Employment and Business Law: We guide corporations and small businesses in contract drafting, corporate formation, commercial real estate, and workplace discrimination compliance.

Protecting Your Workplace Rights and Business Success

Managing the intersection of employment law, employee rights, and insurance defense requires deep institutional knowledge. Our firm has spent decades representing national and local businesses in complex regulatory disputes. We work proactively with employers to develop legal policies that prevent discrimination and harassment claims, and we offer robust courtroom defense if disputes arise. For individuals, our personal injury and workers' compensation lawyers fight tirelessly to recover financial compensation for medical bills, rehabilitation expenses, and lost wages following an accident. We bring a rigorous, trial-prepared mindset to every civil dispute, ensuring that your rights are never compromised.

Distinguished Professional Standing and Multi-State Capabilities

The attorneys at Klass Law Firm LLP are widely respected for their professional achievements. Several of our partners have been recognized as Super Lawyers and Rising Stars in the Great Plains region. Because our lawyers are licensed to practice in Iowa, South Dakota, and Nebraska, we provide seamless representation across state borders. We leverage our deep experience to resolve sensitive legal issues through mediation, collaborative negotiation, or aggressive trial advocacy in state and federal courts. If you are looking to hire a law firm with a proven record of excellence, contact our Sioux City office today to secure the legal support you need.


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Location & Access

Primary Address

Located near the active retail corridor of southern Sioux City, directly adjacent to the Southern Hills Mall.

Building Location

This is a two-story Class B commercial office building built in 1986, known as the Mayfair Center. It is located directly next to the Southern Hills Mall.

Parking Details

Ample free surface public parking is available for clients in the large on-site parking lot surrounding the Mayfair Center.

Public Transit

Served by Sioux City Transit Route 1 (Mall-Commons); nearest stop is at Southern Hills Dr & Sergeant Rd.

Accessibility / Suite Access

Enter through the main front doors of the Mayfair Center. Take the passenger elevator or the stairs up to the second floor, where you will find the main reception area of Klass Law Firm in Suite 290.

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