M Lang Services LLC

What this record tells you

M Lang Services LLC holds Florida licence CFC1425866, 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 2003, which makes it a long-held licence for the trade in this area. Roughly 20% of the 70 active plumbing licences based in the Key West & The Keys area were issued earlier than this one, and the local median sits at 2014. That is 23 years of continuous licensure.

M Lang Services LLC is one of 5 active plumbing licences registered to an address in Big Pine Key, so you have local alternatives to compare quotes against. Michael Alan Lang 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 M Lang Services LLC

• Re-check licence CFC1425866 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 M Lang Services LLC or its qualifying agent, Michael Alan Lang.
• Compare at least three written quotes from other plumbing contractors in Key West & The Keys.
• Confirm in writing that the contractor — not you — pulls the building permit.