Bob Koster Sr. founded K&S Plumbing in 1982, and he had no idea it would grow into a commercial plumbing company spanning three generations. Once Bob Sr. retired in 1997, his sons Bob Jr. and Jack took over the family business. Today, the company is managed by Brian Koster and Ben Koster with Robert Koster overseeing everything. Since we are a family-owned company, you can trust us for some of the best plumbing work in the area. Over 35 years of experience has taught us that the customer is always right.

Update Share

Careers Report

We are looking for motivated individuals who want to be part of a team and learn the many aspects of the plumbing trade. Start your new career now! If hired, you would work under our highly skilled and licensed Journeyman Plumbers for three years. After your apprenticeship hours are satisfied with the state, you will be eligible to take the State Journeyman Exam. This license would allow you to work on your own and to run some of our Grand Rapids Commercial Plumbing projects.

Victor Hughes

Jun 11, 2015

Report

There are so many good things to say about K &S plumbing. The staff are all friendly and professional, which is appreciated, but furthermore the pricing is absolutely amazing. The pricing is fair and justified despite the industry's pricing reputation.

Patrick Bailey

Jun 06, 2015

Report

K&S Plumbing has very fair prices. If an issue comes up throughout the process, they were there to communicate it with me to get through it. Great installation staff. Thanks.

Audrey Bows

Jun 04, 2015

Report

We are always satisfied with the work that K&S Plumbing Co. We sometimes fully depend and rely on them, and they always do what they say they will.

Timothy Brown

Mar 05, 2015

Report

K&S Plumbing has a great staff. It's not a secret that they are very good and always do a good job. They have very competitive prices. Here you definitely will be getting a great service for a great deal.

Walter Matthews

Jan 15, 2015

Report

I have worked with K&S Plumbing now on several projects. They have helped me with plumbing, underground work, and new construction on my house. The staff was extremely friendly!

Kimberly Yates

Jan 12, 2015

Report

I have never had any issues with K&S Plumbing, even including scheduling. They start and complete my projects on time, every time. I feel like that is so rare and hard to find in a company these days.

Kenny Wilder

Dec 27, 2014

Report

I have used K&S Plumbing several times over the years and I plan to continue to do so. I couldn't ask for a better staff to come to my house and help me. They are all friendly and knowledgeable.

Penny Townsend

Nov 03, 2014

Report

The staff at K&S Plumbing is great, and consistently great. I know I can depend on them to be professional and knowledgeable while always getting the job done right!

Tony Pabba

Jun 12, 2014

Report

We've worked with K&S Plumbing for a while now and never second guess any work that they've done. They do a great job, they're easy to work with, just a great company all around.

Monica Bowerd

Apr 02, 2014

Report

The quality of work that these guys put out is next to none. Their customer service is also top notch. We've been working with them for years and have never had a problem. Jobs are always completed on time and at a reasonable price. We highly recommend.

K & S Plumbing