Keller Mechanical and Engineering, Inc.

What this record tells you

Keller Mechanical and Engineering, Inc. holds Florida licence CFC1428888, a CFC classification which authorises work as a certified/registered plumbing contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.

This licence was first issued in 2013, which makes it a long-held licence for the trade in this area. Roughly 44% of the 136 active plumbing licences based in the Lakeland & Winter Haven area were issued earlier than this one, and the local median sits at 2016. That is 13 years of continuous licensure.

Keller Mechanical and Engineering, Inc. is one of 70 active plumbing licences registered to an address in Lakeland, so you have local alternatives to compare quotes against.

The licence is recorded as expiring on 08/31/2026. Florida licences renew on a fixed cycle, and a licence that is not renewed moves to delinquent status — which is why the expiry date matters if you are planning work close to that date. Confirm the current status on the state portal before signing a contract.

Before you hire Keller Mechanical and Engineering, Inc.

• Re-check licence CFC1428888 on the DBPR portal — status can change any day.
• Ask for a current certificate of liability insurance and workers' compensation, issued to you directly by their insurer.
• Confirm the name on your contract matches Keller Mechanical and Engineering, Inc. or its qualifying agent, Thomas John Principato.
• Compare at least three written quotes from other plumbing contractors in Lakeland & Winter Haven.
• Confirm in writing that the contractor — not you — pulls the building permit.