William Brennan

William Brennan was first elected Tinley Park Trustee in April 2019, was re-elected in 2023, and is running for re-election in April 2027 as part of the One Tinley Park team. William has owned and operated a State Farm insurance agency in La Grange since 2011 and is a licensed mortgage loan originator.

Since 2019, William has served as the Trustee Liaison to Emergency Management, the Fire Department, and the Police Department. He chairs the Public Safety Committee and has also served as Mayor Pro Tem.

In early 2019, William initiated an examination of Village contracts to identify excessive risk exposure and waste. This continuing effort has saved millions of dollars on insurance contracts. William is actively involved with negotiating and structuring many large-scale developments that ease the burden on residents by broadening the commercial tax base and generating sales revenue. These projects refresh existing properties, like the Brixmor plaza at 159th Street and Harlem Avenue; revitalize our downtown, like The Boulevard at Central Station; or anchor an entirely new development corridor, like the Loyola Medical Campus at 179th Street and LaGrange Road. William is proud of his role in these efforts.

As Chair of the Public Safety Committee, William has worked to retain and recruit police and public safety personnel, keeping Tinley Park one of the safest communities in the Southland. William worked closely with other Village officials and staff to help ensure local businesses could continue operating safely throughout the COVID-19 pandemic. These early efforts helped Tinley Park maintain a strong financial position.

William and his wife, Lindsay, along with their four boys, live in Tinley Park’s Pottawatomi neighborhood. He is a volunteer coach with the Tinley Park Bulldogs for baseball and wrestling. He also serves as a volunteer board member for St. Coletta’s of Illinois, an organization that provides educational and vocational training for adults and children with intellectual and developmental disabilities. William and his family are regular parishioners at St. George Catholic Church.

William believes that successful organizations are built on strong relationships and personal trust. He continues to build relationships through sound decision-making, unrelenting effort, and candid communication with businesses, residents, and Village staff. William is confident he can continue building on his record of success and help keep Tinley Park’s future shining bright.