St. Louis Mills
St. Louis Mills, also known as St. Louis Outlet Mall, was a shopping mall in Hazelwood, Missouri, a suburb of St. Louis, Missouri, United States. Opened in 2003, the mall struggled with tenancy for many years before closing in 2019. The first redevelopment effort, a sports complex called the Powerplex STL, operated from 2019 to 2023. It was then redeveloped into the Hazelwood Business Park.
History
first proposed St. Louis Mills in August 2002. Typical of their properties, St. Louis Mills included a mix of outlet stores, big-box stores, and conventional shopping mall tenants. That year, the company acquired the site off Missouri Route 370 in the city of Hazelwood, Missouri for $20 million. St. Louis Mills opened its doors on November 13, 2003, and initially experienced a strong influx of visitors during its first few months.Simon Property Group acquired the Mills Corporation in 2007. Five years later, Simon sold off the mall, which was renamed to St. Louis Outlet Mall. As of 2019, there was a sale of the bank asset to new undisclosed owners. On May 24, 2019, Namdar Realty Group announced the closing of the mall and gave the tenants 30 days to vacate the building. The mall closed in September 2019 with the exception of Cabela's, which is still operating as of 2025.
In 2019, plans were approved by the city of Hazelwood to transform the mall into a sports complex called POWERplex STL. In November 2022, Big Sports Properties sold 50% of the building to Industrial Commercial Properties. Powerplex STL closed on May 1, 2023.
Following a $30 million renovation, the building was officially renamed and opened as the Hazelwood Business Park in 2023.