JG Development acquired Supreme Structures on November 1, 2024, roughly doubling its commercial construction operations.

“The acquisition will deliver value to our employee owners and clients for years to come,” said JG Development Founder and CEO Jeff Grundahl. “We look forward to continuing Supreme’s great work, especially in the hospitality and retail space.”

Supreme Structures former owner Dan Bertler has transitioned to an executive sales role at JG Development. Its project managers, estimator, superintendents and crew are continuing projects, now led by JG Development’s commercial operations manager Mike Trapino.

JG Development’s combined team of more than 70 professionals now encompasses single-site development services and five brands:

• Supreme Structures,
• National Construction, JG’s original commercial division with broad capabilities currently focused on housing, multi-tenant buildings, light manufacturing and recreation,
• NCI-Roberts Construction, which builds exclusively for churches and nonprofits,
• Brio Design Homes, a custom home design-build contractor,
• and Vive Home Transformations, a residential design-build remodeler.

JG Development’s vision is to build for its clients where they live, work and serve. It is 100 percent employee owned and has been building in greater Madison since 1981.