With over 50 years of experience under our belts, we’ve learned what works in commercial plumbing contracting.

a picture of soft water lines and soft water tanks in a commercial building plumbed by Horner Plumbing


It takes a strong team to run a job well. We’ve built a team of master plumbers, CAD designers, expert installers, office support staff, and supplier partners that have been working with us for a long time. Many of our plumbers and support team members have been with us for over a decade. Our operations specialists maintain long-term relationships with supplier partners to make sure the backbone of our operations is strong. Our managers and plumbers are on the front lines making sure the daily challenges on a jobsite are solved same day so we can tackle new challenges tomorrow. Having a team that works well together and communication plans that drive us to move forward is what the professionals at Horner Plumbing take pride in every day.


Horner Plumbing has the in-house capabilities to design and install commercial plumbing systems from small offices to complex medical clinics to food service industry projects. No two construction projects are the same. That’s why we’ve built up our know-how in different applications. Using 3D computer modeling that is standard in the Virtual Design and Construction (VDC) industry such as CAD, Revit, and Navisworks, we plan systems in advance and work together with other trades to design the overall building mechanicals. Our CAD operators collaborate with our master plumbers to design the plumbing system and stake out points on the jobsites where firestop sleeves and plumbing will go through each floor of a multi-story structure. In medical clinics, our capabilities include medical gas systems, such as medical air, oxygen, compressed air, vacuum, and waste (WAGD). In hotels, our teams design and install systems where hot water never runs out through tandem hot water heaters and instant hot water with recirculation lines. With the training and expertise we’ve acquired over 50 years, Horner Plumbing has the knowledge can take on most commercial plumbing projects.

Horner Plumbing was contracted to complete the plumbing on this extremely large residential complex


When commercial plumbing contractor experience counts, trust a company that has been there before. From renovations of historical buildings, to conversions to medical clinics, to mixed-use developments from the ground up, Horner Plumbing has been providing expert commercial plumbing contractor services since 1969.

Our experience includes:

  • Office Buildings
  • Government Buildings
  • Historical Buildings
  • and many others

We have experience in different types of projects including Housing and Urban Development (HUD), Rental Partnership Program (RPP), and Wisconsin Housing and Economic Development Authority (WHEDA). Plus, we are proud to be a Woman-Owned Business Enterprise (WBE) certified by the state of Wisconsin and take on projects that give preference to women-owned businesses.


Horner Plumbing’s ability to work with other trades, ensure a great finished product, and provide customer service after occupancy and was top notch.

- Project Engineer, CG Schmidt