Business support. Workspace. Community.
Your next chapter.
Built together.
A place to work. People to turn to. Resources to move forward. Propeller connects entrepreneurs and small businesses with the support to start, grow, and scale.
Support for your next stage
Big ambitions.
A practical place to begin.
Find the guidance, connections, and space that fit where your business is today—and where you want to go.
Resident Incubator
Build your business with strategy, coaching, and connections in a community designed for entrepreneurs.
Explore the programVirtual Incubator
Connect with coaching, training, and business resources wherever you work.
Get connectedSkills & mentoring
Develop your skills through business coaching, learning opportunities, and expert guidance.
Find your next stepSmall Business Cohort
Explore Hub 2.0, the Eastern Michigan Small Business Network’s program focused on growth-stage businesses.
Explore the cohortSmartZone Region 6
Connect with the entrepreneurial ecosystem and resources that help turn ideas into business opportunities.
Explore SmartZone supportEvents & connections
Meet other entrepreneurs, exchange ideas, and discover workshops and networking opportunities.
See upcoming events
Our story
Local roots.
Room for what’s next.
Propeller, formerly The Underground, brings business support and flexible workspace together in Port Huron.
Operated by the Economic Development Alliance of St. Clair County and supported by the Michigan Economic Development Corporation, Propeller is part of a connected entrepreneurial ecosystem.
- One-on-one business guidance and coaching
- Connections to funding and professional resources
- Coworking, private offices, and meeting spaces
Workspaces
Find your place.
Make it a productive day.
Flexible spaces for focused work, team conversations, and the connections that happen between them.
Coworking
Settle into a shared workspace and work alongside a community of entrepreneurs.
Explore coworking ↗
Private offices
A dedicated place for your business, with access to the wider Propeller community.
See private offices ↗
Meeting rooms
Bring people together for a conversation, presentation, or working session.
Book a meeting room ↗Our approach
Start with a conversation.
Build from there.
Tell us your goals.
Share where you are, what you’re working on, and what could help.
Find your support.
Explore coaching, programs, workspaces, and relevant resources.
Make connections.
Meet advisors, fellow entrepreneurs, and business support partners.
Keep moving.
Build skills, review your progress, and plan the next step.
Member experiences
Good company.
Real connections.
It allowed us to obtain the resources, knowledge, and network required to initialize our company and create our first product.
I’ve been connected with grants, programs, and events that have helped me get the right tools, focus on the things I should be focusing on, and network/communicate with like-minded entrepreneurs.
They have helped me with developing everything from the early stages of the idea to building a prototype. Now they are assisting with business planning, funding and more.
Your next step starts here
Come for the workspace.
Stay for the possibilities.
Tell us what you’re building. Let’s find the right support for your business.
Community hubs with coworking, private offices, and innovative gathering spaces.
Built for Entrepreneurs
- Multiple locations, including the Municipal Office Building (5th Floor) in Port Huron and 312 Superior Mall
- Flexible workspace with co-working desks, private offices, kitchen, printer, and on-site conference rooms
- Business guidance & consulting to help launch or grow
- Connections to funding & grant opportunities, including grants specific to Propeller 6 SmartZone clients
- Events & training designed for entrepreneurial success
- Support from a vibrant entrepreneurial ecosystem with a full-time on-site business incubator manager
Why Propeller?
Modern startup incubator ecosystem for doers and creators.
A network for a full entrepreneurial ecosystem for startups and second stage businesses in central / southeast Michigan.
Incubator support, mentorship and networking, funding and growth, coworking community, flexible workspaces, amenities, and events/workshops
We work with start-ups and small businesses to help them gain the resources and know-how to start and grow their business.
Propeller, formerly known as The Underground, is a designated SmartZone operated by the Economic Development Alliance of St. Clair County and supported by the Michigan Economic Development Corporation (MEDC).
Our Accelerator Program
We specialize in growing businesses into profit-generating machines.
Let our team of entrepreneurial experts take your start-up into a fully-functioning, revenue-boosting monster.
Have any questions? Let's talk!
Incubator Program
Start small & grow your business
Meeting Rooms
Schedule s meeting for a few hours or all day
Private Office
Private space with amenities
Co-working
Grab a seat & get to work
What Member’s Say
“Coming from a developer background, creating a software development company is difficult enough, but to have no knowledge or network available to you makes it near-impossible. That’s where Propeller came in. It allowed us to obtain the resources, knowledge, and network required to initialize our company and create our first product. - ”
“Working with Propeller has been helpful with staying on track, and thinking about developing my business. I’ve been connected with grants, programs, and events that have helped me get the right tools, focus on the things I should be focusing on, and network/communicate with like-minded entrepreneurs. The pitch competitions are a great way to share what I’m working on, receive feedback, and figure out what I need to be doing.”
“Propeller, Business Incubator Program, has helped me tremendously! I am in the process of patenting a product. They have helped me with developing everything from the early stages of the idea to building a prototype. Now they are assisting with business planning, funding and more. There’s simply no way I would’ve had the resources or knowledge to do this effectively on my own.”
