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Kolton Karwowski

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Best Plumbers in Clairton

Updated: Aug 04, 2026

Kolton Karwowski Plumber

Kolton Karwowski at 322 Steinbach La, Jefferson Hills, PA 15025, held a Plumber license (#PLMB-LIC-05357) with the Pennsylvania contractors license board. We last verified the license was inactive on 08-03-2026.

Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 125,106 Pennsylvania contractors.

If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.

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Inactive License

HIC #	PLMB-LIC-05357
Status	Inactive
Type	Plumber

According to the local license board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.

This is a sample of licensing data; click here to access a complete history.

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BuildZoom Score

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*No active license on file. If you are Kolton Karwowski, click “This is My Business” to update your information.

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Before you Hire

Here are some rules, regulations, and laws governing general contractors in Pennsylvania:

Does Kolton Karwowski carry a valid contracting license?

Anyone who owns or operates a home improvement business or who offers, performs, or agrees to perform home improvements in Pennsylvania must register with the Office of Attorney General. New home builders do not have to register and are exempt from the regulation but must meet all applicaple building codes.

Kolton Karwowski currently holds license PLMB-LIC-05357 (Plumber), which was Inactive when we last checked.

How important is contractor licensing in Pennsylvania?

Contractors in Pennsylvania do not have to take an exam prior to registering as home improvement contractors.

Your liability risk when hiring Kolton Karwowski

Registered home improvement contractors in Pennsylvania must show proof of general liability insurance with minimum coverage of $50,000, workers' compensation insurance is not required. It is a good idea to only hire contractors with current general liability and workers' compensation policies. Be sure to request copies of insurance certificates for each before any work begins.

How is the BuildZoom score calculated?

The BuildZoom score is based on a number of factors including the contractor's license status, insurance status, verified work history, standing with local consumer interest groups, verified reviews from other BuildZoom users and self-reported feedback from the contractor.

Why you should hire through BuildZoom

When it comes to major construction work or even minor alterations to your home, hiring the wrong contractor could result in incomplete or defective work. You may even find yourself dealing with huge liability claims. BuildZoom does the homework for you and helps you hire the right contractor.

You should get several bids before hiring a contractor

Before hiring a contractor in Pennsylvania, be sure to get at least 3 detailed bids. Quality contractors will take the time to explain their budget proposal, and help guide you through the estimate process. Be wary of an abnormally low bid, they are not worth the risk. These underpriced projects often do not end well for the homeowner, choose a contractor you trust and can clearly communicate with. BuildZoom has made the bid collection process extremely simple (and free). Just click here to get started.

The best way to use BuildZoom is to let us recommend contractors for your remodeling projects.

Homeowners who hire through BuildZoom's free bidding system report high rates of satisfaction, and homeowners who research contractors online are twice as likely to be happy at the end of their project.

If you hire a contractor through BuildZoom, that contractor is accountable to us. We can enforce standards of behavior, mediate disputes, and guarantee satisfaction.

Read more about why hiring through BuildZoom is so effective.

BuildZoom’s database now contains every licensed contractor across the U.S. - over 2.5 million of them... Categorized contractor profiles are enriched using government data from state licensing boards, Better Business Bureau ratings, and more… BuildZoom jumped into the fray by announcing that it raised $10.6 million in a round led by Formation 8. ...the Y combinator-backed startup said it will be focused on remodeling projects, where the median budget is around $19,000… A new index compiled by BuildZoom — which identifies contractors for projects — found that renovations are running 2.8 percent above their 2005 level…

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