John Conner Plumbing & Construction Company

ABOUT US

1

100% Satisfaction
Guaranteed

We deliver more than just plumbing—we provide peace of mind.

Backed by a 100% satisfaction guarantee, upfront pricing, and a team of friendly, knowledgeable service experts, we ensure your home or business receives the care and efficiency it deserves with minimal disruption to your routine.

2

Licensed Wisconsin Texas

We proudly serve Southeastern Wisconsin and have expanded operations to Houston, Texas, where our crews are actively working on residential and commercial projects.

By choosing us, you're partnering with a fully licensed and insured team that values transparency, craftsmanship, and customer satisfaction above all.

3

Plumbing Construction Ready

We specialize in both residential and commercial plumbing, as well as full-scale construction projects, offering expert solutions for remodels, new builds, and property upgrades.

Our construction division is staffed by seasoned professionals who bring precision, safety, and lasting value to every job site.

4

Experienced Team
Set

Whether you're dealing with a plumbing emergency, planning a renovation, or managing a multi-unit development, our team is equipped to handle it all—from design and permitting to final inspection.

We also offer first-time discounts on new installations and repairs, ensuring you get the best value for your money.

MEET OUR TEAM

John Conner

CEO

WE PROVIDE EXPERT SERVICES FOR INDUSTRIAL AND RESIDENTIAL NEEDS.

GET A QUOTE

PLUMBING SERVICES

95%

CONSTRUCTION SERVICES

85%

REPAIRS & MAINTENANCE

99%

OUR RATINGS

We've earned outstanding feedback from over 40 satisfied clients, achieving an impressive 4.5 out of 5-star rating on Google. Our commitment to excellence drives us to continuously improve, ensuring even better service for you!

4.5 / 5

OUR REVIEWS

M. Thao

Developer

I was referred by my roofing contractor to go with John to do my water heater. Very professional did a great job. Very fair price. I am very please with the job he and his crew did. Will do more business in the near future. Thank you!

Gary Watermolen

Business Man

I had decided to hire John Conner Co LLC for my Lead Service Line Replacement. After receiving several quotes John came in with the lowest quote, luckily for me. They came in and directional bored the new poly service line and I didn’t have to worry about removing and replacing my fence/ landscaping / and concrete sidewalks. The crew was on time and courteous throughout the entire process. Great group of people working here. Thanks John.

Christina Torres

Local Guide

We had an exceptional experience with John Conner Plumbing! From start to finish, the team was extremely professional and showed great respect for our home, making sure they left the work area cleaner than they found it. Their attention to detail resulted in quality work that fixed our issue perfectly. We were also thrilled that their quote came in well under their competitors' estimates. Highly recommend John Conner Plumbing for reliable service and great value!