SIA Represents the Following Carriers

  • Becky Pautz
    They are extremely helpful and genuinely care.
  • BK
    Thank you so much and god bless!
  • Erin Backhaus
    5 stars!
  • Sarah Kastein Pieper
    Four stars!
 See All Reviews
SIA Insurance Services Staff

Wisconsin Independent Insurance Agency

Auto/Car Insurance, Homeowners Insurance, Medicare Supplements, Business/Commercial Insurance, and Life/Health Insurance for Waupun and All of Wisconsin

Founded in 1927 by John D. Westra, SIA has been a family owned agency serving Waupun and the surrounding area for almost 100 years. Today we still have our main office in Waupun and we still have family ownership. We now service accounts throughout the state, as well as their out-of-state operations. We have expanded our business to include agents in Randolph, Jackson, and Greenville, and we are looking forward to continued growth, through the reputation we have established for insurance value and customer satisfaction.

Over the years, we have established long-term relationships with the companies we represent and the customers we are privileged to serve. These are the relationships upon which SIA Insurance Services has been built.

SIA Insurance Services is a full-service independent insurance agency. We will review your needs, analyze your risks, explain the options and offer solutions to your problems.

Joel Sterk

Questions? We Can Help!

Recent News & Updates

Make Sure to Insure All Aspects of Your Business

The minute you start a business, you are immediately exposed to certain risks. The importance of having the right business insurance cannot be overstated. Our knowledgeable agents at SIA Insurance Services in Waupun, Wisconsin can help you fully assess your business insurance needs and find the right coverage at the best available rates. Types of Business Insurance Businesses today have a wide range of insurance... Read Article

Great Insurance Tips for First Time Home Buyers

Homeowners insurance is not required by law like automobile liability insurance. However, it is required by mortgage companies to protect the lender’s investment. Even if you were able to pay cash for your home, homeowners insurance is an important protection for what is likely your biggest asset. Following are some tips about homeowners insurance for first time home buyers. Get Renters Insurance to Help Lower... Read Article