1951 Grove Ave, Racine, since 1978
Family owned in Racine since 1978
Dave and Kathy Karlsen founded this company in Racine, Wisconsin in 1978. It has been family owned and operated ever since, and it has not moved out of Southeast Wisconsin.
- Year Established
- 1978
- Where
- Racine, WI

The whole shop, Grove Avenue
Every one of these people works out of the same address the company has used since 1978.
How it started
A new-construction plumber that grew into three trades at once
Karlsen Plumbing, Inc. was established in 1978 in Racine, WI. The focus of the company was new residential construction. Since then Karlsen Plumbing, Inc. has transformed into a multifaceted plumbing company. We now handle residential, commercial and industrial plumbing construction, service/repair and design build plumbing projects.
It still averages around 200 new homes a year as the plumbing installer for builders and general contractors, which is the work the company was built on in the first place. Expert plumbing repair with our service call system runs alongside it, out of the same shop.
The people doing that work today are the same crew you would find on a service call, a remodel, or a commercial job. One office, one licence, and the training behind it goes back to a five year apprenticeship for every journeyman here, covered in full on the training page.
What the company holds itself to
- Continually striving for excellence
- Close attention to detail
- Dedicated to safety and quality
Beyond what we say about ourselves
Three ways the fifty years are backed up
Racine, Kenosha Builders Association
Karlsen Plumbing is a member, which is the same association the builders it works with belong to.
Kohler's Find a Pro directory
Karlsen is a listed contractor there, and Kohler's own listing independently confirms more than fifty years in business, not just the company's own claim of it.
Plumbers & Steamfitters Local 118
Our plumbers are members, on top of the state licence every one of them carries.
Still at 1951 Grove Ave, still answering the phone
See the full range of what the shop handles on the services page, or reach the office directly.