From its 2018 conception, STL Fusion has been dedicated to providing a flexible, affordable, comfortable work environment for businesses of all sizes. We like to ensure our members are well taken care of, offering 24-7 access, on-site staff, conference room access, printing, and mail services.

We’re owned and supported locally, so we can keep our priorities where they matter most. On you! At STL Fusion, productivity thrives in our thoughtfully curated spaces. From open-plan areas and private offices to member amenities like our Penthouse Rooftop and the Par 555 Golf Simulator, we’re tailored to suit diverse working lifestyles.

Whether you’re in town for the day, an entrepreneur ready to take the next step, an artist needing a place to play, or just need a break from working at home, you’ll find the space to help you get to work.

From Artist to Architect, we have a space that fits. Book a tour today and let us help you find yours!


@ 555 Washington Avenue

Since 1876, the 555 building has stood as a model for Commerce and Community in downtown St. Louis. From Crawford’s Dry Goods, The May Company Department store, The United States Postal Service, and today, 555 Washington Ave. has remained dedicated to preserving St. Louis’ historical foundations.

Now it’s your turn. Come make history with us.

Learn About Our Building

From Our Community

What Our Coworking Members Have to Say

I have been working out of STL Fusion for the past six months, and I couldn’t be happier with the office space. The office is conveniently located downtown near restaurants and coffee, there’s ample street and lot parking, and it puts me close to sports and other entertainment. The free snacks and breakfast is another great perk.