1360 S 5th Street · St. Charles, MO 63301
Office & Retail for Lease

Three Flags Center

— a Main Street address for your business —

Historic St. Charles charm, freshly renovated offices and storefronts, one flat monthly price. From cozy private offices to full storefronts on South 5th Street.

See Suites & Rates Walk the Building
Offices from $638/month, full service · No CAM, no tax, no insurance pass-throughs

The Suite Directory

Every available office, with its floor plan and one monthly price — utilities, cleaning, taxes, and insurance included.

Floor plan coming soon

Suite 268 Available now

824 SF · fits 3–5
$1,425 /month, all-in
Schedule a Tour →See Listing →
Floor plan coming soon

Suite 368 Available now

1,138 SF · fits 5–8
$1,825 /month, all-in
Schedule a Tour →See Listing →
Floor plan coming soon

Suite 202 Available now

333 SF · 1-2
$638 /month, all-in
Schedule a Tour →See Listing →
Floor plan coming soon

Suite 1376 Available now

979 SF · Bathroom / Kitchenette
$1,692 /month, all-in
Schedule a Tour →See Listing →

Retail Storefronts on 5th

Street-front retail on South 5th Street, steps off the I-70 interchange.

Floor plan coming soon

Suite 1392–1394 Available now

2,160 SF · storefront · divisible
$18.00/SF + $4.50 NNN
Schedule a Tour →
Annotated market aerial of St. Charles showing Three Flags Center site, I-70, Historic Main Street, the Missouri River, and nearby anchors
51,327 rentable square feet · 51 office suites · 23,701 SF of retail · at the corner of I-70 and Fifth Street in St. Charles
Tap the map to enlarge
🏛️

Historic Main Street

Brick storefronts, gas lamps, and 40+ restaurants and shops, minutes away.

🛣️

Easy On, Easy Off

Front-door access at the I-70 / 5th Street interchange. Parking at the door.

🚩

Three Flags Heritage

Named for the Spanish, French, and American flags that have flown over St. Charles.

Come See It in Person

Leasing by AHRA Group · (314) 773-1700
leasing@threeflagscenter.com
Three Flags Center, 1360 S 5th Street, St. Charles, MO 63301

Schedule a Tour