The Tough Job Experts

Building Smart, Building Strong

There’s a reason businesses, industrial clients, municipal governments, schools, universities and healthcare organizations call us first for their construction and pre-construction needs: because no other builder manages tough jobs – whatever their size – like JP Cullen.

Since 1892, JP Cullen has been known as the builder that manages the projects others can’t, very large, very complex or requiring deep industry-specific expertise. In other words, projects where there’s no room for error.

If you’re planning on putting up a new building, adding an addition or starting a renovation – or if you need specialized steel, masonry or historical restoration work done – rely on JP Cullen to plan and execute your project with maximum efficiency, intelligence, and professionalism.

Building a Reputation Since 1892

JP Cullen is a fifth-generation family-owned business. Since 1892, we have taken on the most challenging government, education, healthcare, commerce, industrial, arts & entertainment and historic restoration projects across Wisconsin, northern Illinois, and northeast Iowa.

Today we are a $400+ million full-service preconstruction and construction company with 800 employees, managing projects from $1,000 to over $100 million in size – from new construction (office buildings, university buildings, residence halls, healthcare clinics, chemical, food and beverage, manufacturing, and power plants) to additions and renovations (healthcare facilities, K-12 schools, chemical, food and beverage, manufacturing, and power plants) to specialized work (e.g. steel erection, masonry, carpentry, historical restoration, equipment installation).

Our corporate headquarters is located in Janesville, Wisconsin. We have a Milwaukee office in Brookfield, Wisconsin and an office in Madison, Wisconsin.

Living Lean

Fundamentally, the Lean Approach improves processes through constant, continuous improvement. Lean challenges everyone within an organization to identify and eliminate steps in their processes that are wasteful or unnecessary – until only the steps that add value remain.

Lean constantly pushes organizations to find better ways of doing things to produce better and better outcomes. That’s why lean is important to JP Cullen, and that’s why it’s important to our customers.

JP Cullen has been literally built in lean principles. Our Lean Process Improvement program was put in place in 1997, which means we’ve practiced lean longer – significantly longer – than our competitors.

Why does that give JP Cullen an advantage? Because lean cultures are powerful. Unlike traditional cultures that are reactive and geared around avoiding change, a lean culture is proactive, built to embrace new approaches and constantly challenging the status quo. A lean culture is focused on anticipating and preventing problems instead of reacting after they happen.

You can see all this in how we work, in the way we incorporate the lean approach at the field level where it matters the most. Where other firms are doing work, we’re improving work. Where others think installing computerized scheduling software is what it means to be lean, our superintendents, foremen and craftspeople are living lean on the job site – continually adding value through repeating cycles of Plan-Do-Check-Act.

All of which is to say that at JP Cullen, lean isn’t a fad. It’s a mindset and philosophy that affects the life of every employee, every day.

Self-performed trades

Quality, timely completion and pride in craftsmanship are the pillars of our business and the reason for our success on longevity. On this foundation we’ve built two divisions that offer industry-leading trade expertise in Steel Erection and Concrete & Masonry.

Additionally, our general construction division provides trades for carpentry, demolition, heavy rigging and excavation. Each provides services by hard bid as well as negotiated contracts.


Every construction manager talks about safety records. At JP Cullen we go beyond standardized plans and safety manuals. We thoroughly assess the work site, the project phases and the constituencies affected. Then we create a site- and constituent-specific safety plan that addresses the real-life, day-to-day challenges of the job. For us, the safety of your staff and visitors is paramount.

Our current EMR of .61 is about half the national average. Quite an accomplishment when you consider we logged more than 1,000,000 labor hours in 2013 – and that JP Cullen is one of few construction managers to include high risk trades in our rating (two of the five major trades we include in our services have the highest accident rates in the industry: ironworkers and masons).

The green experts

We specialize in assisting our clients in developing sustainable, green options that deliver high performance facilities, yet minimize the impact on budgets. Our sustainable and LEED building experience includes more that 20 major projects, with a total value in excess of $500 million. Among them, the State of Iowa’s first LEED Platinum State Office Building.

Whether you are looking to include sustainability options or certify your buildings, count on our on-site leadership, detailed tracking procedures, management, and collaborative approach.