J. Williams Industrial Group, Inc.

What this record tells you

J. Williams Industrial Group, Inc. holds Florida licence CMC1251051, a CMC classification which authorises work as a certified/registered air conditioning or mechanical contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.

This licence was first issued in 2022, which makes it a relatively recent licence for the trade in this area. Roughly 73% of the 762 active hvac & ac repair licences based in the Jacksonville area were issued earlier than this one, and the local median sits at 2014. That is 4 years of continuous licensure.

J. Williams Industrial Group, Inc. is one of 28 active hvac & ac repair licences registered to an address in Callahan, so you have local alternatives to compare quotes against. John Alvin III Williams additionally holds 2 other active Florida licences in our records, which can indicate a contractor qualified across more than one trade or entity.

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 J. Williams Industrial Group, Inc.

• Re-check licence CMC1251051 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 J. Williams Industrial Group, Inc. or its qualifying agent, John Alvin III Williams.
• Compare at least three written quotes from other hvac & ac repair contractors in Jacksonville.
• Confirm in writing that the contractor — not you — pulls the building permit.