T-REX is more than just a building.

T‐REX is a world class venue providing the startup entrepreneur with low cost & flexible enterprise space, while serving the region with quality programming and inspiring community. Two years after its inception, T-REX occupies 5 floors of Lammert on Washington and growing. It is now home to 100+ startups, iTEN, Capital Innovators, Cultivation Capital, SixThirty, Prosper, Arch Grants and home to many other entrepreneurial activity including Startup Weekend and StartLouis.

Our Goal:

To increase the vitality of the regional economy by recruiting and nurturing startup companies that advance technological development, encourage creative thinking through design and employ highly skilled workers that will contribute to the economic development of St. Louis.  This goal would not be possible without the help of our sponsors, which you can see here.

Square Feet

Our Values:

To foster a St. Louis startup community by:


Providing facilities to entrepreneurs to allow them to reduce risks, lower capital and operating costs and to assist with their early success.


Creating and welcoming programming that encourages entrepreneurship, innovation and business creativity.


Having accelerators, mentors, universities, business resources and government assisted programs in close proximity to early stage companies.

"T-REX's name comes from our first location, the Railway Exchange. When the Partnership for Downtown St. Louis, The Regional Chamber and City of St. Louis came together to form the Technology Entrepreneur Center (T.E.C.) they made their first home at the Old Railway Exchange on Olive. Put them together: TEC + Railway Ex = T-REX!"

− Fun Fact #13

"The Lammert Building, T-REX's home was once the famous Lammert Furniture Company, and is one of the oldest buildings in Downtown St. Louis."

− Fun Fact #37

"T-REX hosts Lunch 'n Learns every Wednesday where member or outside companies provide lunch for a group of T-REX members and pitch/present for attendees."

− Fun Fact #142

"There are T-REX heads and faces painted onto old paintings that are scattered throughout the walls of the Lammert Building."

− Fun Fact #1007



Who’s at T-REX