Jp Cullen

the firm has grown through five generations of Cullen family leadership to become a regional construction powerhouse.

Today it’s a full‑service construction and preconstruction company headquartered in Janesville with offices in Madison and Milwaukee.

They self‑perform key trades—like concrete, masonry and steel erection—and use Virtual Design & Construction and prefabrication to streamline complex builds.

Typical projects span from small renovations, including hospitals, university labs, athletic facilities, industrial plants and historic restorations.

Notable works include expansions at UW‑Madison, Advocate Aurora health centers, Wisconsin State Capitol, Camp Randall renovations and the Milwaukee Bucks training facility.

They offer specialized services in commercial, education, healthcare, industrial, science & tech and historic restoration sectors.

the family has reinvested in its roots, like anchoring a community solar garden in Janesville by investing in clean‑energy infrastructure.

We hire team members who share beliefs in family, safety, partnership, and process improvement.

Our culture is one of trust and personal responsibility, dedicated to empowering and growing employees for years to come.

We identify, hire, train, and retain the best people to serve our customers.

Deliver the best product to the customer, and conduct yourself with the utmost integrity and trustworthiness.

We continuously improve every process we perform—and work smarter and harder than any other construction company in our region.

Specialize in assisting clients in developing green solutions that minimize the impact on budget.

Sustainability is one of the firm’s core service offerings.

No publicly stated net zero emissions target or timeline found on website or LinkedIn.