Commercial
From auditoriums to athletic facilities and corporate offices, we’ll navigate you through regulations, laws, codes, and compliance.
Education
We create modern learning environments that benefit students, educators and the greater community – at the lowest possible cost.
Healthcare
We envision and build innovative healthcare facilities that help providers focus on patient-centered care.
Industrial
Working for Fortune 500 companies across a range of industrial markets, our team makes sure each project meets its full potential.
Science & Tech
We work with owners across the commercial, industrial, healthcare and education markets on complex projects.Â
Prefabrication
At the core of our operations is a focus on flexibility, innovation, and finding ways to add value for our clients.
Virtual Design & Construction
Self-Performed Work
We pride ourselves on training our team to become construction experts so we can self-perform as much of the work on a project as possible.
Preconstruction
Our preconstruction services lay the foundation for safe and successful outcomes, from a project’s inception to its completion.
Referendum Services
We help you educate voters on referendum issues, develop a preconstruction plan, and maximize value for every taxpayer dollar invested.
Sustainability
Historic Restoration
We bring decades of knowledge to your restoration project which allows us to execute the work efficiently.
Contractor Services
Our contractor services have been carefully formulated over the years to best serve our clients and their needs.
Design-Build
Industrial Services
We provide the skilled labor and field expertise needed to support industrial projects from start to finish.
About Us
In five generations, we’ve grown into a $950+ million, full-service construction company with over 850 employees.
Blog
Diversity, Equity & Inclusion
Our team is highly involved in organizations and committees to bring more diversity to the A/E/C industry.Â
Leadership
Meet our leadership team who ensures that our crews and teams have access to the tools, resources and opportunities to deliver the results our clients expect.Â
Building Our Communities
Bid Opportunities
Browse our future projects and uncover opportunities to work with the industry’s finest.
Subcontractor Registration
Register your company with JP Cullen using our online portal.
Confidentiality Agreement
We are committed to protecting sensitive data and information to ensure a smooth working relationship between all parties.
Commercial
From auditoriums to athletic facilities and corporate offices, we’ll navigate you through regulations, laws, codes, and compliance.
Education
We create modern learning environments that benefit students, educators and the greater community – at the lowest possible cost.
Healthcare
We envision and build innovative healthcare facilities that help providers focus on patient-centered care.
Industrial
Working for Fortune 500 companies across a range of industrial markets, our team makes sure each project meets its full potential.
Science & Tech
We work with owners across the commercial, industrial, healthcare and education markets on complex projects.Â
Prefabrication
At the core of our operations is a focus on flexibility, innovation, and finding ways to add value for our clients.
Virtual Design & Construction
Self-Performed Work
We pride ourselves on training our team to become construction experts so we can self-perform as much of the work on a project as possible.
Preconstruction
Our preconstruction services lay the foundation for safe and successful outcomes, from a project’s inception to its completion.
Referendum Services
We help you educate voters on referendum issues, develop a preconstruction plan, and maximize value for every taxpayer dollar invested.
Sustainability
Historic Restoration
We bring decades of knowledge to your restoration project which allows us to execute the work efficiently.
Contractor Services
Our contractor services have been carefully formulated over the years to best serve our clients and their needs.
Design-Build
Industrial Services
We provide the skilled labor and field expertise needed to support industrial projects from start to finish.
About Us
In five generations, we’ve grown into a $950+ million, full-service construction company with over 850 employees.
Blog
Diversity, Equity & Inclusion
Our team is highly involved in organizations and committees to bring more diversity to the A/E/C industry.Â
Leadership
Meet our leadership team who ensures that our crews and teams have access to the tools, resources and opportunities to deliver the results our clients expect.Â
Building Our Communities
Bid Opportunities
Browse our future projects and uncover opportunities to work with the industry’s finest.
Subcontractor Registration
Register your company with JP Cullen using our online portal.
Confidentiality Agreement
We are committed to protecting sensitive data and information to ensure a smooth working relationship between all parties.







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The Rock County Jail & Law Enforcement Center project replaces severely aging facilities with a modernized correction facility and state-of-the-art law enforcement center, centralizing all services in one location. The new facility, spanning 200,000 sqft, will be seamlessly integrated into the existing building by demolishing the old one after moving in, all while maintaining full operational capacity. This three-year project has transformed the law enforcement landscape for Rock County.
Designed to exceed conventional standards, the new one-stop shop offers dedicated spaces to meet the diverse needs of both employees and inmates. Building features include:
A critical aspect of our approach as construction manager was value engineering (VE). By analyzing existing spaces and working closely with Venture Architects, we optimized corridor widths and support areas, resulting in significant cost savings of 7% for Rock County, demonstrating our dedication to budget stewardship.
Upon completion of the Law Enforcement Center portion of the project, we had a surplus of treated lumber, valued at approximately $4,100. Rather than returning or reusing these materials, we sought out a way that would benefit both the local environment and the community.
We partnered with the Rock County Chapter of the Ice Age Trail Alliance, an organization dedicated to maintaining and enhancing the Ice Age National Scenic Trial. Members from our Young Leaders group, led by Tyler Sears, collaborated with 45 volunteers from the Alliance to transform the leftover lumber into information posts. By the end of the project, our team successfully installed around 30 new way-finding posts along the trails improving the visitor experience while also contributing to the overall maintenance and tidiness of the national park grounds.
Our Locations