Rebuilding Better: How B&T Manufacturing Is Reinventing Offsite Construction

Audree Grubesic published this post on Jun 24, 2025. It profiles B&T Manufacturing, based in Rapid City, South Dakota, and Tim Torpey, the company’s general manager and founder.

B&T Manufacturing at a Glance

• Founded eight years before the post.
• Started by testing bathroom pods for a friend in Southern California.
• Moved from prototype to production in a few months.
• Uses FrameCAD machinery.
• Produces bathroom pods, panelized greenhouses, and steel-framed modular housing frames.

Bathroom Pods and the H3 Unit

B&T first grew through bathroom pod manufacturing. Its H3 bathroom unit was developed with Lendlease.

• It is an alternative to chemical toilets on construction sites.
• It includes water and sanitation lines.
• It includes lights, HVAC, soap dispensers, and hand dryers.
• It can be trailered, moved through material elevators, forklifted, or rolled by hand on flat surfaces.
• Version five is currently in production.
• The design has been shaped by customer feedback.

Panelized Greenhouses

B&T entered panelized greenhouse production after a visitor asked about the idea during a facility visit.

• The greenhouses are designed to withstand prairie winds.
• They ship flat-packed.
• They can be assembled or expanded by DIY homeowners.
• They are meant for gardening, growing food, and extending living space.

Steel-Framed Modular Housing

B&T works with companies such as Mountain Modular in Idaho to supply precision-engineered frames for modular homes.

• The frames are assembled offsite into modular houses.
• B&T can produce two complete home packages every seven days.

Key Themes

• Innovation comes from listening to customers.
• Smaller factories can still have large impact.
• Adaptability supports growth across multiple product lines.
• The company emphasizes quality, responsiveness, and customer service.

Takeaways

The post ends by inviting readers to learn more or visit B&T Manufacturing in Rapid City.