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.
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
Safety
We emphasize the importance of safety and have a designated team that ensures all protocols are adhered to.
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.
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.
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.
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
Safety
We emphasize the importance of safety and have a designated team that ensures all protocols are adhered to.
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.
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.
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.
Our team recently came together for our 2026 Annual Dinner, a night dedicated to celebrating our people and recognizing another year of accomplishments. We highlighted outstanding work companywide and took time to thank all of our employees for their commitment to serving our customers and supporting one another. Tradition Following past years, a key […]
Ascension Wisconsin has completed a $10 million expansion of its behavioral health services at Ascension St. Francis Hospital in Milwaukee with the goal of establishing a regional center of excellence aimed at addressing rising demand for psychiatric care in southeast Wisconsin. The project includes renovation of 12,000 square feet of hospital space and the addition of 36 inpatient
Ascension Nears Opening Behavioral Health Expansion at St. Francis Hospital Read More »
Building a Legacy: JP Cullen’s 100+ Years of Award-Winning Projects and AGC Leadership At JP Cullen, our story is told through more than just the things we build, but through the relationships we shape, and the milestones we accomplish along the way. For more than a century, our partnership with the Associated General Contractors (AGC)
At JP Cullen, going above and beyond is not always about the buildings we construct or materials, it is about the people. Whether we are building large scale facilities, or making connections within the community, we believe in making long lasting impressions. Recently, one of those moments came from a third-grade student and his school
We were honored to receive a Wisconsin Safety Council Corporate Safety Award, an achievement awarded to only one company in each category. JP Cullen was selected as the recipient in the Medium‑Large Construction category, reflecting our continued commitment to safety excellence across every level of our organization. The Wisconsin Safety Council’s Corporate Safety Award program
JP Cullen Awarded Wisconsin Safety Council Corporate Safety Award Read More »
JANESVILLE– Following in the footsteps of his great, great, great grandfather J.P. Cullen, George Cullen steps into the role as the chair of Forward Janesville. Cullen hopes to be a purveyor of growth in the community. “I take really seriously that I am responsible to carry forward what he has done, because we are going
Forward Janesville Welcomes George Cullen as New Board Chair Read More »
American Family Field will get a 20,000-square-foot addition that will be available for event rentals for the general public during the Milwaukee Brewers’ offseason and as an amenity to season ticket holders during the season. The hospitality addition is one of the three largest projects at the stadium included in a $500 million funding package
Projects lined up for American Family Field include hospitality space, winterization Read More »
To celebrate Women in Construction Week, we hosted a special panel and workwear try-on event designed to support and connect the women across our company. Female employees were invited to try on women‑sized safety gear and workwear to ensure they have the right equipment to feel safe, confident, and comfortable on the job.
Meet Adam Mastalir, one of our skilled Estimators who joined JP Cullen in May 2018 and has since become an integral part of our team. Currently serving as the lead estimator on the UW Health C2 Bed Tower Expansion project, they bring a wealth of experience and expertise to the Healthcare, Science, and Technology Division.
One thing that sets our industrial team apart is their ability to travel nationwide and support clients at sites across the country. To give you a closer look at what that experience is like, we sat down with Project Manager, Mitch Danner. Mitch recently wrapped up a project with Ball Corporation and has a unique
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