5555 Winghaven Blvd
Spaces
Single-Tenant, Class A Office Building For Lease in O’Fallon
Building description
Colliers is pleased to offer 5555 Winghaven Blvd for lease, a 73,840-square-foot Class A office building located in the heart of O’Fallon, Missouri. This single-tenant property delivers exceptional functionality with a generous 5.4/1,000 RSF parking ratio, making it ideal for companies seeking a high-visibility, employee-focused workspace. The building’s location provides excellent access to major highways, nearby amenities, and a strong labor pool.
Originally constructed in 1999, the property has been thoughtfully updated with recent renovations to meet modern office demands. Tenants will enjoy an inviting and professional environment, including a full-service on-site café—a rare convenience that enhances employee satisfaction and productivity. With high-quality finishes and a well-maintained exterior, 5555 Winghaven Blvd is a standout leasing opportunity in the St. Charles County office market.
Building highlights
73,840 SF office building available for lease, divisible
Available July 1, 2026
Three-story building
First Floor: 23,264 SF
Second Floor: 24,507 SF
Third Floor: 24,508 SF
Storage Space: 1,561 SF
5.4/1,000 RSF parking ratio including 23 covered executive spaces with 2 EV charging stations
Full-service cafe on the first floor
Built in 1999 with recent interior renovations
Building is fully sprinklered
Located near the intersection of Winghaven Boulevard and Interstate 64
Monument signage at Winghaven entrance
High residential and commercial growth area with abundant restaurant, entertainment, banking, and retail nearby
Listing Contacts
Property History
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