About Mainstreet
History
Mainstreet Organization of REALTORS® has a long history of serving REALTORS® and the communities our members reside, work and volunteer in. What began in 1921 as the then DuPage Association of REALTORS®, the organization grew and merged many times to become Mainstreet Organization of REALTORS® in 2007.
Today, with more than 20,000 members, Mainstreet and our members cover more than 200 municipalities in DuPage County, Lake County and Western and Southern Suburban Cook County.
Downers Grove
Headquarters :: 6655 Main Street, Downers Grove, IL 60516
Monday - Friday, 8:30 a.m. - 5 p.m.Rolling Meadows
3701 Algonquin Road, Ste. 650, Rolling Meadows, IL 60008
Monday - Friday, 8:30 a.m. - 5 p.m.Libertyville
1580 S. Milwaukee Avenue, Suite 312, Libertyville, IL 60048
Monday - Friday, 8:30 a.m. - noon, 1 - 5 p.m.Tinley Park
16345 S. Harlem Avenue, Suite 200, Tinley Park, IL 60477
Monday - Friday, 8:30 a.m. - noon, 1 - 5 p.m.