Speak directly to the owner

John Devine 815-483-1968

Concrete Slabs and Prefab Structures, Engineered for Backyard Wellness Studios, Golf Sheds, Hot Tubs & Home Offices.

Owned and operated by a 2nd generation Local #1 Union Carpenter, with over 15 years of experience building prefab structures at McCormick Place convention center. Serving Chicago's North Side and North Shore with engineered slabs and foundations built to last.

Nighttime view of a backyard patio with a small raised deck, a set of black chairs, a sliding glass door, string lights, green bushes, and a concrete stepping stone path.

Recent North side project

Custom hot tub pad for a client on the North side. Paver steps were partially cut out to allow our customers the exact space they wanted

A backyard studio, shed or prefab structure is only as good as the foundation beneath it. We build properly prepared concrete slabs designed for Chicago conditions—and can help guide you toward the right prefab structure for your space and project.

Foundry’s Process

  • Need help choosing a prefab studio or shed? We can guide you through the process and recommend quality options from select manufacturers.

  • Concrete slabs for backyard studios, sheds, hot tubs & prefab structures

  • Site preparation, excavation, stone base & reinforced concrete

  • Slabs sized and prepared to match your structure’s requirements

  • Local Chicago contractor — serving the North Side and nearby neighborhoods

Prefab studios come in a wide variety of High quality & luxury models. They cost up to 40% less than a build, and keep your backyard mostly undisturbed. They are better for the environment, and can be built in a fraction of the time. Quality and customization are never an issue, theres always a studio that fits the dreams of each customer. Studios in Chicago with a square footage of 150 feet or less do not require a permit.