Cleary President Sean Cleary and National Construction Co-owner Jeff Grundahl at ribbon cutting ceremony.

Cleary Building Corp. Expansion Complete with Partnership of National Construction

Cleary Building Corp. recently completed an over 20,000 square foot addition. In honor of the completion, Cleary and local general contractor partner National Construction celebrated with a ribbon cutting ceremony on Tuesday, August 17. The addition created additional office and work space for employees at the company’s Corporate World Headquarters in Verona, WI.

Cleary President, Sean Cleary stated, “the expansion represents a commitment by Cleary to the Verona community and to the continued future growth of the company.”

Cleary partnered with National Construction for a second time on the expansion project; the contractor worked with Cleary on its 2005 Verona addition project as well. The unique partnership brought together both companies’ construction teams to work on the project. A unique feature of the project is exposed interior rafters and ductwork that showcases Cleary’s pre-engineered building systems. Construction was completed safely amid the COVID-19 pandemic, and phased employee access minimized disruption.

“National Construction truly appreciates our long-standing relationship with Cleary,” said Jeff Grundahl, co-owner of National and its parent company JG Development. “It’s notable to construct multiple projects for a client within our own industry, and the collaboration and cooperative self-performance by both of our teams was outstanding. We’re honored to support Cleary’s continued growth.”


Cleary Building Corp. is a debt free, family-owned company in business since 1978!  The Corporate World Headquarters office and manufacturing plant are located in Verona, WI. Additional manufacturing facilities are located in Grand Island, NE and Hazelton, ID. Cleary Building Corp. employs over 900 full-time employees throughout the United States at its 81 branch offices. For more information about Cleary Building Corp., contact us:  (800) 373-5550 or visit Hours of operation:  8 a.m. – 12 p.m. and 1 p.m. – 5 p.m. Monday – Friday, and 8 a.m. – 12 p.m. on Saturdays.

Family and employee-owned as a division of JG Development, National Construction is a commercial design-build firm committed to building facilities that drive economic growth. The general contractor takes pride in bettering southern Wisconsin communities, with a portfolio of work focused on the businesses and services most important to a community’s residents, like childcare, healthcare and government facilities, and housing, retail and hospitality, as well as key economic drivers like corporate headquarters. Offices are located in Blue Mounds and downtown Madison, Wisconsin. More information is available at