Sandy Grassmuck

Sandy Grassmuck

Owner/Managing Broker

  • Cell: (314) 486-8333
  • Office: (636) 634-2828 ext. 701
  • Office Location: Lake St. Louis

About Sandy Grassmuck



Sandy has been in the real estate industry for over 18 yrs. In March 2009 she started Grassmuck Realty in Lake St. Louis and in February 2015 she opened a second office in Fenton.Sandy Grassmuck was just awarded 2018 REALTOR of the Year by St. Charles Realtors and 2018 Entrepreneur of the Year by Women’s Council of Realtors®, Missouri.

Since opening her brokerage, she has earned 8 designations from the National Association of Realtors®, graduated from the elite Missouri Realtors® Leadership Academy, is serving as President Elect for St. Charles Realtors®, after servicing on the board for 7+ years, Treasurer for the Women’s Council of Realtors®, Missouri, after serving on that executive board for 2+ years. servicing her 9th year as a Missouri Realtors® Director, 2016 President of Women’s Council of Realtors®, has served on numerous committees for both the State and local Association of Realtors®. 

Grassmuck Realty has been awarded Beyond the Best, Top 50 Businesses in St. Charles County and Sandy Grassmuck awarded 5 Star Real Estate Agent, best in client satisfaction and Reader Choice Top Agent Award 2014.

In addition, Sandy is very involved and maintains an annual major investor and President’s Circle status for the Realtor® Political Action Committee,defending homeowner’s rights!

Grassmuck Realty, LLC is a member of the following organizations:

National Association of Realtors
Missouri Realtors
St. Charles Association of Realtors
St. Louis Association of Realtors
Women’s Council of Realtors
Western St. Charles Chamber of Commerce
O’Fallon Chamber of Commerce