- For Lease $28.75/SF/YR
- Property Type Office - General Office
- Property Size 52,370 SF
- Lot Size 2.51 Acre
- Parking Spaces Avail. 235
- Parking Ratio 4.50 / 1,000 SF
- Property Tenancy Multi-Tenant
- Building Class B
- Year Built 2008
- Date Updated Aug 17, 2026
Description
Green Mount Corporate Center is a 52,370-square-foot general office property situated on a 2.51-acre lot at 475 Regency Park in O'Fallon. The building features a parking capacity of 235 spaces, with a parking ratio of 4.5 spaces per 1,000 square feet. Constructed in 2008, this Class B office property provides a professional environment suited to a variety of business needs.
The property benefits from proximity to numerous amenities in O'Fallon. Dining options within walking distance include The Egg and I, Texas Roadhouse, and Buffalo Wild Wings, all located less than 0.3 miles away. Several hotels, such as TownePlace Suites and Hilton Garden Inn, are also conveniently located within 0.3 miles, providing excellent options for out-of-town guests. Additional nearby points of interest include Cracker Barrel and Five Guys, offering more dining choices, and Holiday Inn Express approximately 0.5 miles away.
True
1 Space Available
#220
General Office
$28.75/SF/YR
2,100 SF
2
2,100 - 2,100 SF
Immediate
Full Service
Yes
No
No
Last remaining suite (2,100 RSF) available for lease.
High end finishes throughout. Shared restrooms located off the lobby of each floor. 2 private offices, bullpen, kitchenette and open air meeting spaces. TI negotiable.
Full service lease rate includes all utilities aside from data/internet.
Contacts
Barber Murphy
Barber Murphy
